---
_id: '51202'
abstract:
- lang: eng
  text: <jats:p>When joining lightweight parts of various materials, clinching is
    a cost efficient solution. In a production line, the quality of a clinch point
    is primarily controlled by measurement of dimensions, which are accessible from
    outside. However, methods such as visual testing and measuring the bottom thickness
    as well as the outer diameter are not able to deliver any information about the
    most significant geometrical characteristic of the clinch point, neck thickness
    and undercut. Furthermore, ex-situ destructive methods such as microsectioning
    cannot detect elastic deformations and cracks that close after unloading. In order
    to exceed the current limits, a new non-destructive in-situ testing method for
    the clinching process is necessary. This work proposes a concept to characterize
    clinch points in-situ by combining two complementary non-destructive methods,
    namely, computed tomography (CT) and ultrasonic testing. Firstly, clinch points
    with different geometrical characteristics are analysed experimentally using ex-situ
    CT to get a highly spatially resolved 3D-image of the object. In this context,
    highly X-ray attenuating materials enhancing the visibility of the sheet-sheet
    interface are investigated. Secondly, the test specimens are modelled using finite
    element method (FEM) and a transient dynamic analysis (TDA) is conducted to study
    the effect of the geometrical differences on the deformation energy and to qualify
    the TDA as a fast in-situ non-destructive method for characterizing clinch points
    at high temporal resolution.</jats:p>
author:
- first_name: Daniel
  full_name: Köhler, Daniel
  last_name: Köhler
- first_name: Behdad
  full_name: Sadeghian, Behdad
  last_name: Sadeghian
- first_name: Robert
  full_name: Kupfer, Robert
  last_name: Kupfer
- first_name: Juliane
  full_name: Troschitz, Juliane
  last_name: Troschitz
- first_name: Maik
  full_name: Gude, Maik
  last_name: Gude
- first_name: Alexander
  full_name: Brosius, Alexander
  last_name: Brosius
citation:
  ama: Köhler D, Sadeghian B, Kupfer R, Troschitz J, Gude M, Brosius A. A Method for
    Characterization of Geometric Deviations in Clinch Points with Computed Tomography
    and Transient Dynamic Analysis. <i>Key Engineering Materials</i>. 2021;883:89-96.
    doi:<a href="https://doi.org/10.4028/www.scientific.net/kem.883.89">10.4028/www.scientific.net/kem.883.89</a>
  apa: Köhler, D., Sadeghian, B., Kupfer, R., Troschitz, J., Gude, M., &#38; Brosius,
    A. (2021). A Method for Characterization of Geometric Deviations in Clinch Points
    with Computed Tomography and Transient Dynamic Analysis. <i>Key Engineering Materials</i>,
    <i>883</i>, 89–96. <a href="https://doi.org/10.4028/www.scientific.net/kem.883.89">https://doi.org/10.4028/www.scientific.net/kem.883.89</a>
  bibtex: '@article{Köhler_Sadeghian_Kupfer_Troschitz_Gude_Brosius_2021, title={A
    Method for Characterization of Geometric Deviations in Clinch Points with Computed
    Tomography and Transient Dynamic Analysis}, volume={883}, DOI={<a href="https://doi.org/10.4028/www.scientific.net/kem.883.89">10.4028/www.scientific.net/kem.883.89</a>},
    journal={Key Engineering Materials}, publisher={Trans Tech Publications, Ltd.},
    author={Köhler, Daniel and Sadeghian, Behdad and Kupfer, Robert and Troschitz,
    Juliane and Gude, Maik and Brosius, Alexander}, year={2021}, pages={89–96} }'
  chicago: 'Köhler, Daniel, Behdad Sadeghian, Robert Kupfer, Juliane Troschitz, Maik
    Gude, and Alexander Brosius. “A Method for Characterization of Geometric Deviations
    in Clinch Points with Computed Tomography and Transient Dynamic Analysis.” <i>Key
    Engineering Materials</i> 883 (2021): 89–96. <a href="https://doi.org/10.4028/www.scientific.net/kem.883.89">https://doi.org/10.4028/www.scientific.net/kem.883.89</a>.'
  ieee: 'D. Köhler, B. Sadeghian, R. Kupfer, J. Troschitz, M. Gude, and A. Brosius,
    “A Method for Characterization of Geometric Deviations in Clinch Points with Computed
    Tomography and Transient Dynamic Analysis,” <i>Key Engineering Materials</i>,
    vol. 883, pp. 89–96, 2021, doi: <a href="https://doi.org/10.4028/www.scientific.net/kem.883.89">10.4028/www.scientific.net/kem.883.89</a>.'
  mla: Köhler, Daniel, et al. “A Method for Characterization of Geometric Deviations
    in Clinch Points with Computed Tomography and Transient Dynamic Analysis.” <i>Key
    Engineering Materials</i>, vol. 883, Trans Tech Publications, Ltd., 2021, pp.
    89–96, doi:<a href="https://doi.org/10.4028/www.scientific.net/kem.883.89">10.4028/www.scientific.net/kem.883.89</a>.
  short: D. Köhler, B. Sadeghian, R. Kupfer, J. Troschitz, M. Gude, A. Brosius, Key
    Engineering Materials 883 (2021) 89–96.
date_created: 2024-02-06T15:06:14Z
date_updated: 2025-06-02T20:19:57Z
department:
- _id: '157'
- _id: '43'
doi: 10.4028/www.scientific.net/kem.883.89
intvolume: '       883'
keyword:
- Mechanical Engineering
- Mechanics of Materials
- General Materials Science
language:
- iso: eng
page: 89-96
project:
- _id: '130'
  grant_number: '418701707'
  name: 'TRR 285: TRR 285'
- _id: '133'
  name: 'TRR 285 - C: TRR 285 - Project Area C'
- _id: '148'
  name: 'TRR 285 – C04: TRR 285 - Subproject C04'
publication: Key Engineering Materials
publication_identifier:
  issn:
  - 1662-9795
publication_status: published
publisher: Trans Tech Publications, Ltd.
status: public
title: A Method for Characterization of Geometric Deviations in Clinch Points with
  Computed Tomography and Transient Dynamic Analysis
type: journal_article
user_id: '83408'
volume: 883
year: '2021'
...
---
_id: '51199'
abstract:
- lang: eng
  text: <jats:title>Abstract</jats:title><jats:p>Recent developments in automotive
    and aircraft industry towards a multi-material design pose challenges for modern
    joining technologies due to different mechanical properties and material compositions
    of various materials such as composites and metals. Therefore, mechanical joining
    technologies like clinching are in the focus of current research activities. For
    multi-material joints of metals and thermoplastic composites thermally assisted
    clinching processes with advanced tool concepts are well developed. The material-specific
    properties of fibre-reinforced thermoplastics have a significant influence on
    the joining process and the resulting material structure in the joining zone.
    For this reason, it is important to investigate these influences in detail and
    to understand the phenomena occurring during the joining process. Additionally,
    this provides the basis for a validation of a numerical simulation of such joining
    processes. In this paper, the material structure in a joint resulting from a thermally
    assisted clinching process is investigated. The joining partners are an aluminium
    sheet and a thermoplastic composite (organo sheet). Using computed tomography
    enables a three-dimensional investigation that allows a detailed analysis of the
    phenomena in different joining stages and in the material structure of the finished
    joint. Consequently, this study provides a more detailed understanding of the
    material behavior of thermoplastic composites during thermally assisted clinching.</jats:p>
author:
- first_name: Benjamin
  full_name: Gröger, Benjamin
  last_name: Gröger
- first_name: Daniel
  full_name: Köhler, Daniel
  last_name: Köhler
- first_name: Julian
  full_name: Vorderbrüggen, Julian
  last_name: Vorderbrüggen
- first_name: Juliane
  full_name: Troschitz, Juliane
  last_name: Troschitz
- first_name: Robert
  full_name: Kupfer, Robert
  last_name: Kupfer
- first_name: Gerson
  full_name: Meschut, Gerson
  last_name: Meschut
- first_name: Maik
  full_name: Gude, Maik
  last_name: Gude
citation:
  ama: Gröger B, Köhler D, Vorderbrüggen J, et al. Computed tomography investigation
    of the material structure in clinch joints in aluminium fibre-reinforced thermoplastic
    sheets. <i>Production Engineering</i>. 2021;16(2-3):203-212. doi:<a href="https://doi.org/10.1007/s11740-021-01091-x">10.1007/s11740-021-01091-x</a>
  apa: Gröger, B., Köhler, D., Vorderbrüggen, J., Troschitz, J., Kupfer, R., Meschut,
    G., &#38; Gude, M. (2021). Computed tomography investigation of the material structure
    in clinch joints in aluminium fibre-reinforced thermoplastic sheets. <i>Production
    Engineering</i>, <i>16</i>(2–3), 203–212. <a href="https://doi.org/10.1007/s11740-021-01091-x">https://doi.org/10.1007/s11740-021-01091-x</a>
  bibtex: '@article{Gröger_Köhler_Vorderbrüggen_Troschitz_Kupfer_Meschut_Gude_2021,
    title={Computed tomography investigation of the material structure in clinch joints
    in aluminium fibre-reinforced thermoplastic sheets}, volume={16}, DOI={<a href="https://doi.org/10.1007/s11740-021-01091-x">10.1007/s11740-021-01091-x</a>},
    number={2–3}, journal={Production Engineering}, publisher={Springer Science and
    Business Media LLC}, author={Gröger, Benjamin and Köhler, Daniel and Vorderbrüggen,
    Julian and Troschitz, Juliane and Kupfer, Robert and Meschut, Gerson and Gude,
    Maik}, year={2021}, pages={203–212} }'
  chicago: 'Gröger, Benjamin, Daniel Köhler, Julian Vorderbrüggen, Juliane Troschitz,
    Robert Kupfer, Gerson Meschut, and Maik Gude. “Computed Tomography Investigation
    of the Material Structure in Clinch Joints in Aluminium Fibre-Reinforced Thermoplastic
    Sheets.” <i>Production Engineering</i> 16, no. 2–3 (2021): 203–12. <a href="https://doi.org/10.1007/s11740-021-01091-x">https://doi.org/10.1007/s11740-021-01091-x</a>.'
  ieee: 'B. Gröger <i>et al.</i>, “Computed tomography investigation of the material
    structure in clinch joints in aluminium fibre-reinforced thermoplastic sheets,”
    <i>Production Engineering</i>, vol. 16, no. 2–3, pp. 203–212, 2021, doi: <a href="https://doi.org/10.1007/s11740-021-01091-x">10.1007/s11740-021-01091-x</a>.'
  mla: Gröger, Benjamin, et al. “Computed Tomography Investigation of the Material
    Structure in Clinch Joints in Aluminium Fibre-Reinforced Thermoplastic Sheets.”
    <i>Production Engineering</i>, vol. 16, no. 2–3, Springer Science and Business
    Media LLC, 2021, pp. 203–12, doi:<a href="https://doi.org/10.1007/s11740-021-01091-x">10.1007/s11740-021-01091-x</a>.
  short: B. Gröger, D. Köhler, J. Vorderbrüggen, J. Troschitz, R. Kupfer, G. Meschut,
    M. Gude, Production Engineering 16 (2021) 203–212.
date_created: 2024-02-06T15:05:29Z
date_updated: 2025-06-02T20:20:49Z
department:
- _id: '157'
- _id: '43'
doi: 10.1007/s11740-021-01091-x
intvolume: '        16'
issue: 2-3
keyword:
- Industrial and Manufacturing Engineering
- Mechanical Engineering
language:
- iso: eng
page: 203-212
project:
- _id: '130'
  grant_number: '418701707'
  name: 'TRR 285: TRR 285'
- _id: '133'
  name: 'TRR 285 - C: TRR 285 - Project Area C'
- _id: '148'
  name: 'TRR 285 – C04: TRR 285 - Subproject C04'
- _id: '131'
  name: 'TRR 285 - A: TRR 285 - Project Area A'
- _id: '137'
  name: 'TRR 285 – A03: TRR 285 - Subproject A03'
publication: Production Engineering
publication_identifier:
  issn:
  - 0944-6524
  - 1863-7353
publication_status: published
publisher: Springer Science and Business Media LLC
status: public
title: Computed tomography investigation of the material structure in clinch joints
  in aluminium fibre-reinforced thermoplastic sheets
type: journal_article
user_id: '83408'
volume: 16
year: '2021'
...
---
_id: '51200'
abstract:
- lang: eng
  text: <jats:p>As lightweight design gains more and more attention, time and cost-efficient
    joining methods such as clinching are becoming more popular. A clinch point’s
    quality is usually determined by ex situ destructive analyses such as microsectioning.
    However, these methods do not yield the detection of phenomena occurring during
    loading such as elastic deformations and cracks that close after unloading. Alternatively,
    in situ computed tomography (in situ CT) can be used to investigate the loading
    process of clinch points. In this paper, a method for in situ CT analysis of a
    single-lap shear test with clinched metal sheets is presented at the example of
    a clinched joint with two 2 mm thick aluminum sheets. Furthermore, the potential
    of this method to validate numerical simulations is shown. Since the sheets’ surfaces
    are locally in contact with each other, the interface between both aluminum sheets
    and therefore the exact contour of the joining partners is difficult to identify
    in CT analyses. To compensate for this, the application of copper varnish between
    the sheets is investigated. The best in situ CT results are achieved with both
    sheets treated. It showed that with this treatment, in situ CT is suitable to
    properly observe the three-dimensional deformation behavior and to identify the
    failure modes.</jats:p>
article_number: '1859'
author:
- first_name: Daniel
  full_name: Köhler, Daniel
  last_name: Köhler
- first_name: Robert
  full_name: Kupfer, Robert
  last_name: Kupfer
- first_name: Juliane
  full_name: Troschitz, Juliane
  last_name: Troschitz
- first_name: Maik
  full_name: Gude, Maik
  last_name: Gude
citation:
  ama: Köhler D, Kupfer R, Troschitz J, Gude M. In Situ Computed Tomography—Analysis
    of a Single-Lap Shear Test with Clinch Points. <i>Materials</i>. 2021;14(8). doi:<a
    href="https://doi.org/10.3390/ma14081859">10.3390/ma14081859</a>
  apa: Köhler, D., Kupfer, R., Troschitz, J., &#38; Gude, M. (2021). In Situ Computed
    Tomography—Analysis of a Single-Lap Shear Test with Clinch Points. <i>Materials</i>,
    <i>14</i>(8), Article 1859. <a href="https://doi.org/10.3390/ma14081859">https://doi.org/10.3390/ma14081859</a>
  bibtex: '@article{Köhler_Kupfer_Troschitz_Gude_2021, title={In Situ Computed Tomography—Analysis
    of a Single-Lap Shear Test with Clinch Points}, volume={14}, DOI={<a href="https://doi.org/10.3390/ma14081859">10.3390/ma14081859</a>},
    number={81859}, journal={Materials}, publisher={MDPI AG}, author={Köhler, Daniel
    and Kupfer, Robert and Troschitz, Juliane and Gude, Maik}, year={2021} }'
  chicago: Köhler, Daniel, Robert Kupfer, Juliane Troschitz, and Maik Gude. “In Situ
    Computed Tomography—Analysis of a Single-Lap Shear Test with Clinch Points.” <i>Materials</i>
    14, no. 8 (2021). <a href="https://doi.org/10.3390/ma14081859">https://doi.org/10.3390/ma14081859</a>.
  ieee: 'D. Köhler, R. Kupfer, J. Troschitz, and M. Gude, “In Situ Computed Tomography—Analysis
    of a Single-Lap Shear Test with Clinch Points,” <i>Materials</i>, vol. 14, no.
    8, Art. no. 1859, 2021, doi: <a href="https://doi.org/10.3390/ma14081859">10.3390/ma14081859</a>.'
  mla: Köhler, Daniel, et al. “In Situ Computed Tomography—Analysis of a Single-Lap
    Shear Test with Clinch Points.” <i>Materials</i>, vol. 14, no. 8, 1859, MDPI AG,
    2021, doi:<a href="https://doi.org/10.3390/ma14081859">10.3390/ma14081859</a>.
  short: D. Köhler, R. Kupfer, J. Troschitz, M. Gude, Materials 14 (2021).
date_created: 2024-02-06T15:05:43Z
date_updated: 2025-06-02T20:20:32Z
department:
- _id: '157'
- _id: '43'
doi: 10.3390/ma14081859
intvolume: '        14'
issue: '8'
keyword:
- General Materials Science
language:
- iso: eng
project:
- _id: '130'
  grant_number: '418701707'
  name: 'TRR 285: TRR 285'
- _id: '133'
  name: 'TRR 285 - C: TRR 285 - Project Area C'
- _id: '148'
  name: 'TRR 285 – C04: TRR 285 - Subproject C04'
publication: Materials
publication_identifier:
  issn:
  - 1996-1944
publication_status: published
publisher: MDPI AG
status: public
title: In Situ Computed Tomography—Analysis of a Single-Lap Shear Test with Clinch
  Points
type: journal_article
user_id: '83408'
volume: 14
year: '2021'
...
---
_id: '51201'
abstract:
- lang: eng
  text: <jats:p>In lightweight design, clinching is a cost-efficient solution as the
    joint is created through localized cold-forming of the joining parts. A clinch
    point’s quality is usually assessed using ex-situ destructive testing methods.
    These, however, are unable to detect phenomena immediately during the joining
    process. For instance, elastic deformations reverse and cracks close after unloading.
    In-situ methods such as the force-displacement evaluation are used to control
    a clinching process, though deviations in the clinch point geometry cannot be
    derived with this method. To overcome these limitations, the clinching process
    can be investigated using in-situ computed tomography (in-situ CT). However, a
    clinching tool made of steel would cause strong artefacts and a high attenuation
    in the CT measurement, reducing the significance of this method. Additionally,
    when joining parts of the same material, the sheet-sheet interface is hardly detectable.
    This work aims at identifying, firstly, tool materials that allow artefact-reduced
    CT measurements during clinching, and, secondly, radiopaque materials that can
    be applied between the joining parts to enhance the detectability of the sheet-sheet
    interface. Therefore, both CT-suitable tool materials and radiopaque materials
    are selected and experimentally investigated. In the clinching process, two aluminium
    sheets with radiopaque material in between are clinched in a single-step (rotationally
    symmetric joint without cut section). It is shown that e.g. silicon nitride is
    suited as tool material and a tin layer is suitable to enhance the detectability
    of the sheet-sheet interface.</jats:p>
author:
- first_name: Daniel
  full_name: Köhler, Daniel
  last_name: Köhler
- first_name: Robert
  full_name: Kupfer, Robert
  last_name: Kupfer
- first_name: Juliane
  full_name: Troschitz, Juliane
  last_name: Troschitz
- first_name: Maik
  full_name: Gude, Maik
  last_name: Gude
citation:
  ama: Köhler D, Kupfer R, Troschitz J, Gude M. Clinching in In-situ CT – Experimental
    Study on Suitable Tool Materials. <i>ESAFORM 2021</i>. Published online 2021.
    doi:<a href="https://doi.org/10.25518/esaform21.2781">10.25518/esaform21.2781</a>
  apa: Köhler, D., Kupfer, R., Troschitz, J., &#38; Gude, M. (2021). Clinching in
    In-situ CT – Experimental Study on Suitable Tool Materials. <i>ESAFORM 2021</i>.
    <a href="https://doi.org/10.25518/esaform21.2781">https://doi.org/10.25518/esaform21.2781</a>
  bibtex: '@article{Köhler_Kupfer_Troschitz_Gude_2021, title={Clinching in In-situ
    CT – Experimental Study on Suitable Tool Materials}, DOI={<a href="https://doi.org/10.25518/esaform21.2781">10.25518/esaform21.2781</a>},
    journal={ESAFORM 2021}, publisher={University of Liege}, author={Köhler, Daniel
    and Kupfer, Robert and Troschitz, Juliane and Gude, Maik}, year={2021} }'
  chicago: Köhler, Daniel, Robert Kupfer, Juliane Troschitz, and Maik Gude. “Clinching
    in In-situ CT – Experimental Study on Suitable Tool Materials.” <i>ESAFORM 2021</i>,
    2021. <a href="https://doi.org/10.25518/esaform21.2781">https://doi.org/10.25518/esaform21.2781</a>.
  ieee: 'D. Köhler, R. Kupfer, J. Troschitz, and M. Gude, “Clinching in In-situ CT
    – Experimental Study on Suitable Tool Materials,” <i>ESAFORM 2021</i>, 2021, doi:
    <a href="https://doi.org/10.25518/esaform21.2781">10.25518/esaform21.2781</a>.'
  mla: Köhler, Daniel, et al. “Clinching in In-situ CT – Experimental Study on Suitable
    Tool Materials.” <i>ESAFORM 2021</i>, University of Liege, 2021, doi:<a href="https://doi.org/10.25518/esaform21.2781">10.25518/esaform21.2781</a>.
  short: D. Köhler, R. Kupfer, J. Troschitz, M. Gude, ESAFORM 2021 (2021).
date_created: 2024-02-06T15:05:58Z
date_updated: 2025-06-02T20:20:21Z
department:
- _id: '157'
- _id: '43'
doi: 10.25518/esaform21.2781
language:
- iso: fre
project:
- _id: '130'
  grant_number: '418701707'
  name: 'TRR 285: TRR 285'
- _id: '133'
  name: 'TRR 285 - C: TRR 285 - Project Area C'
- _id: '148'
  name: 'TRR 285 – C04: TRR 285 - Subproject C04'
publication: ESAFORM 2021
publication_status: published
publisher: University of Liege
status: public
title: Clinching in In-situ CT – Experimental Study on Suitable Tool Materials
type: journal_article
user_id: '83408'
year: '2021'
...
---
_id: '51198'
article_number: '100089'
author:
- first_name: D.
  full_name: Köhler, D.
  last_name: Köhler
- first_name: B.
  full_name: Sadeghian, B.
  last_name: Sadeghian
- first_name: J.
  full_name: Troschitz, J.
  last_name: Troschitz
- first_name: R.
  full_name: Kupfer, R.
  last_name: Kupfer
- first_name: M.
  full_name: Gude, M.
  last_name: Gude
- first_name: A.
  full_name: Brosius, A.
  last_name: Brosius
citation:
  ama: Köhler D, Sadeghian B, Troschitz J, Kupfer R, Gude M, Brosius A. Characterisation
    of lateral offsets in clinch points with computed tomography and transient dynamic
    analysis. <i>Journal of Advanced Joining Processes</i>. 2021;5. doi:<a href="https://doi.org/10.1016/j.jajp.2021.100089">10.1016/j.jajp.2021.100089</a>
  apa: Köhler, D., Sadeghian, B., Troschitz, J., Kupfer, R., Gude, M., &#38; Brosius,
    A. (2021). Characterisation of lateral offsets in clinch points with computed
    tomography and transient dynamic analysis. <i>Journal of Advanced Joining Processes</i>,
    <i>5</i>, Article 100089. <a href="https://doi.org/10.1016/j.jajp.2021.100089">https://doi.org/10.1016/j.jajp.2021.100089</a>
  bibtex: '@article{Köhler_Sadeghian_Troschitz_Kupfer_Gude_Brosius_2021, title={Characterisation
    of lateral offsets in clinch points with computed tomography and transient dynamic
    analysis}, volume={5}, DOI={<a href="https://doi.org/10.1016/j.jajp.2021.100089">10.1016/j.jajp.2021.100089</a>},
    number={100089}, journal={Journal of Advanced Joining Processes}, publisher={Elsevier
    BV}, author={Köhler, D. and Sadeghian, B. and Troschitz, J. and Kupfer, R. and
    Gude, M. and Brosius, A.}, year={2021} }'
  chicago: Köhler, D., B. Sadeghian, J. Troschitz, R. Kupfer, M. Gude, and A. Brosius.
    “Characterisation of Lateral Offsets in Clinch Points with Computed Tomography
    and Transient Dynamic Analysis.” <i>Journal of Advanced Joining Processes</i>
    5 (2021). <a href="https://doi.org/10.1016/j.jajp.2021.100089">https://doi.org/10.1016/j.jajp.2021.100089</a>.
  ieee: 'D. Köhler, B. Sadeghian, J. Troschitz, R. Kupfer, M. Gude, and A. Brosius,
    “Characterisation of lateral offsets in clinch points with computed tomography
    and transient dynamic analysis,” <i>Journal of Advanced Joining Processes</i>,
    vol. 5, Art. no. 100089, 2021, doi: <a href="https://doi.org/10.1016/j.jajp.2021.100089">10.1016/j.jajp.2021.100089</a>.'
  mla: Köhler, D., et al. “Characterisation of Lateral Offsets in Clinch Points with
    Computed Tomography and Transient Dynamic Analysis.” <i>Journal of Advanced Joining
    Processes</i>, vol. 5, 100089, Elsevier BV, 2021, doi:<a href="https://doi.org/10.1016/j.jajp.2021.100089">10.1016/j.jajp.2021.100089</a>.
  short: D. Köhler, B. Sadeghian, J. Troschitz, R. Kupfer, M. Gude, A. Brosius, Journal
    of Advanced Joining Processes 5 (2021).
date_created: 2024-02-06T15:05:00Z
date_updated: 2025-06-02T20:21:00Z
department:
- _id: '157'
- _id: '43'
doi: 10.1016/j.jajp.2021.100089
intvolume: '         5'
keyword:
- Mechanical Engineering
- Mechanics of Materials
- Engineering (miscellaneous)
- Chemical Engineering (miscellaneous)
language:
- iso: eng
project:
- _id: '130'
  grant_number: '418701707'
  name: 'TRR 285: TRR 285'
- _id: '133'
  name: 'TRR 285 - C: TRR 285 - Project Area C'
- _id: '148'
  name: 'TRR 285 – C04: TRR 285 - Subproject C04'
publication: Journal of Advanced Joining Processes
publication_identifier:
  issn:
  - 2666-3309
publication_status: published
publisher: Elsevier BV
status: public
title: Characterisation of lateral offsets in clinch points with computed tomography
  and transient dynamic analysis
type: journal_article
user_id: '83408'
volume: 5
year: '2021'
...
---
_id: '22930'
abstract:
- lang: eng
  text: Self-piercing riveting is an established technique for joining multi-material
    structures in car body manufacturing. Rivets for self-piercing riveting differ
    in their geometry, the material used, the condition of the material and their
    surface condition. To shorten the manufacturing process by omitting the heat treatment
    and the coating process, the authors have elaborated a concept for the use of
    stainless steel with high strain hardening as a rivet material. The focus of the
    present investigation is on the evaluation of the influences of the rivet’s geometry
    and material on its deformation behaviour. Conventional rivets of types P and
    HD2, a rivet with an improved geometry made of treatable steel 38B2, and rivets
    made of the stainless steels 1.3815 and 1.4541 are examined. The analysis is conducted
    by means of multi-step joining tests for two material combinations comprising
    high-strength steel HCT70X and aluminium EN AW-5083. The joints are cut to provide
    a cross-section and the deformation behaviour of the different rivets is analysed
    on the basis of the measured changes in geometry and hardness. In parallel, an
    examination of the force-stroke curves provides further insights. It can be demonstrated
    that, besides the geometry, the material strength, in particular, has a significant
    influence on the deformation behaviour of the rivet. The strength of steel 1.4541
    is seen to be too low for the joining task, while the strength of steel 1.3815
    is sufficient, and hence the investigation confirms the capability of rivets made
    of 1.3815 for joining even challenging material combinations.
author:
- first_name: Benedikt
  full_name: Uhe, Benedikt
  id: '38131'
  last_name: Uhe
- first_name: Clara-Maria
  full_name: Kuball, Clara-Maria
  last_name: Kuball
- first_name: Marion
  full_name: Merklein, Marion
  last_name: Merklein
- first_name: Gerson
  full_name: Meschut, Gerson
  id: '32056'
  last_name: Meschut
  orcid: 0000-0002-2763-1246
citation:
  ama: 'Uhe B, Kuball C-M, Merklein M, Meschut G. Self-Piercing Riveting Using Rivets
    Made of Stainless Steel with High Strain Hardening. In: Daehn G, Cao J, Kinsey
    B, Tekkaya E, Vivek A, Yoshida Y, eds. <i>Forming the Future - Proceedings of
    the 13th International Conference on the Technology of Plasticity. The Minerals,
    Metals &#38; Materials Series.</i> Springer; 2021:1495-1506. doi:<a href="https://doi.org/10.1007/978-3-030-75381-8_124">10.1007/978-3-030-75381-8_124</a>'
  apa: Uhe, B., Kuball, C.-M., Merklein, M., &#38; Meschut, G. (2021). Self-Piercing
    Riveting Using Rivets Made of Stainless Steel with High Strain Hardening. In G.
    Daehn, J. Cao, B. Kinsey, E. Tekkaya, A. Vivek, &#38; Y. Yoshida (Eds.), <i>Forming
    the Future - Proceedings of the 13th International Conference on the Technology
    of Plasticity. The Minerals, Metals &#38; Materials Series.</i> (pp. 1495–1506).
    Springer. <a href="https://doi.org/10.1007/978-3-030-75381-8_124">https://doi.org/10.1007/978-3-030-75381-8_124</a>
  bibtex: '@inbook{Uhe_Kuball_Merklein_Meschut_2021, place={Cham}, title={Self-Piercing
    Riveting Using Rivets Made of Stainless Steel with High Strain Hardening}, DOI={<a
    href="https://doi.org/10.1007/978-3-030-75381-8_124">10.1007/978-3-030-75381-8_124</a>},
    booktitle={Forming the Future - Proceedings of the 13th International Conference
    on the Technology of Plasticity. The Minerals, Metals &#38; Materials Series.},
    publisher={Springer}, author={Uhe, Benedikt and Kuball, Clara-Maria and Merklein,
    Marion and Meschut, Gerson}, editor={Daehn, Glenn and Cao, Jian and Kinsey, Brad
    and Tekkaya, Erman and Vivek, Anupam and Yoshida, Yoshinori}, year={2021}, pages={1495–1506}
    }'
  chicago: 'Uhe, Benedikt, Clara-Maria Kuball, Marion Merklein, and Gerson Meschut.
    “Self-Piercing Riveting Using Rivets Made of Stainless Steel with High Strain
    Hardening.” In <i>Forming the Future - Proceedings of the 13th International Conference
    on the Technology of Plasticity. The Minerals, Metals &#38; Materials Series.</i>,
    edited by Glenn Daehn, Jian Cao, Brad Kinsey, Erman Tekkaya, Anupam Vivek, and
    Yoshinori Yoshida, 1495–1506. Cham: Springer, 2021. <a href="https://doi.org/10.1007/978-3-030-75381-8_124">https://doi.org/10.1007/978-3-030-75381-8_124</a>.'
  ieee: 'B. Uhe, C.-M. Kuball, M. Merklein, and G. Meschut, “Self-Piercing Riveting
    Using Rivets Made of Stainless Steel with High Strain Hardening,” in <i>Forming
    the Future - Proceedings of the 13th International Conference on the Technology
    of Plasticity. The Minerals, Metals &#38; Materials Series.</i>, G. Daehn, J.
    Cao, B. Kinsey, E. Tekkaya, A. Vivek, and Y. Yoshida, Eds. Cham: Springer, 2021,
    pp. 1495–1506.'
  mla: Uhe, Benedikt, et al. “Self-Piercing Riveting Using Rivets Made of Stainless
    Steel with High Strain Hardening.” <i>Forming the Future - Proceedings of the
    13th International Conference on the Technology of Plasticity. The Minerals, Metals
    &#38; Materials Series.</i>, edited by Glenn Daehn et al., Springer, 2021, pp.
    1495–506, doi:<a href="https://doi.org/10.1007/978-3-030-75381-8_124">10.1007/978-3-030-75381-8_124</a>.
  short: 'B. Uhe, C.-M. Kuball, M. Merklein, G. Meschut, in: G. Daehn, J. Cao, B.
    Kinsey, E. Tekkaya, A. Vivek, Y. Yoshida (Eds.), Forming the Future - Proceedings
    of the 13th International Conference on the Technology of Plasticity. The Minerals,
    Metals &#38; Materials Series., Springer, Cham, 2021, pp. 1495–1506.'
date_created: 2021-08-04T14:02:32Z
date_updated: 2026-02-27T10:40:39Z
department:
- _id: '157'
doi: 10.1007/978-3-030-75381-8_124
editor:
- first_name: Glenn
  full_name: Daehn, Glenn
  last_name: Daehn
- first_name: Jian
  full_name: Cao, Jian
  last_name: Cao
- first_name: Brad
  full_name: Kinsey, Brad
  last_name: Kinsey
- first_name: Erman
  full_name: Tekkaya, Erman
  last_name: Tekkaya
- first_name: Anupam
  full_name: Vivek, Anupam
  last_name: Vivek
- first_name: Yoshinori
  full_name: Yoshida, Yoshinori
  last_name: Yoshida
keyword:
- Self-piercing riveting
- Lightweight design
- Deformation behaviour
- Stainless steel
- High nitrogen steel
language:
- iso: eng
page: 1495-1506
place: Cham
publication: Forming the Future - Proceedings of the 13th International Conference
  on the Technology of Plasticity. The Minerals, Metals & Materials Series.
publication_status: published
publisher: Springer
quality_controlled: '1'
status: public
title: Self-Piercing Riveting Using Rivets Made of Stainless Steel with High Strain
  Hardening
type: book_chapter
user_id: '53912'
year: '2021'
...
---
_id: '22274'
abstract:
- lang: eng
  text: 'The use of high-strength steel and aluminium is rising due to the intensified
    efforts being made in lightweight design, and self-piercing riveting is becoming
    increasingly important. Conventional rivets for self-piercing riveting differ
    in their geometry, the material used, the condition of the material and the coating.
    To shorten the manufacturing process, the use of stainless steel with high strain
    hardening as the rivet material represents a promising approach. This allows the
    coating of the rivets to be omitted due to the corrosion resistance of the material
    and, since the strength of the stainless steel is achieved by cold forming, heat
    treatment is no longer required. In addition, it is possible to adjust the local
    strength within the rivet. Because of that, the authors have elaborated a concept
    for using high nitrogen steel 1.3815 as the rivet material. The present investigation
    focusses on the joint strength in order to evaluate the capability of rivets in
    high nitrogen steel by comparison to conventional rivets made of treatable steel.
    Due to certain challenges in the forming process of the high nitrogen steel rivets,
    deviations result from the targeted rivet geometry. Mainly these deviations cause
    a lower joint strength with these rivets, which is, however, adequate. All in
    all, the capability of the new rivet is proven by the results of this investigation. '
author:
- first_name: Benedikt
  full_name: Uhe, Benedikt
  id: '38131'
  last_name: Uhe
- first_name: Clara-Maria
  full_name: Kuball, Clara-Maria
  last_name: Kuball
- first_name: Marion
  full_name: Merklein, Marion
  last_name: Merklein
- first_name: Gerson
  full_name: Meschut, Gerson
  id: '32056'
  last_name: Meschut
  orcid: 0000-0002-2763-1246
citation:
  ama: 'Uhe B, Kuball C-M, Merklein M, Meschut G. Strength of self-piercing riveted
    Joints with conventional Rivets and Rivets made of High Nitrogen Steel. In: ;
    2021. doi:<a href="https://doi.org/10.25518/esaform21.1911">10.25518/esaform21.1911</a>'
  apa: Uhe, B., Kuball, C.-M., Merklein, M., &#38; Meschut, G. (2021). <i>Strength
    of self-piercing riveted Joints with conventional Rivets and Rivets made of High
    Nitrogen Steel</i>. 24th International Conference on Material Forming (ESAFORM),
    Liège, Belgien. <a href="https://doi.org/10.25518/esaform21.1911">https://doi.org/10.25518/esaform21.1911</a>
  bibtex: '@inproceedings{Uhe_Kuball_Merklein_Meschut_2021, title={Strength of self-piercing
    riveted Joints with conventional Rivets and Rivets made of High Nitrogen Steel},
    DOI={<a href="https://doi.org/10.25518/esaform21.1911">10.25518/esaform21.1911</a>},
    author={Uhe, Benedikt and Kuball, Clara-Maria and Merklein, Marion and Meschut,
    Gerson}, year={2021} }'
  chicago: Uhe, Benedikt, Clara-Maria Kuball, Marion Merklein, and Gerson Meschut.
    “Strength of Self-Piercing Riveted Joints with Conventional Rivets and Rivets
    Made of High Nitrogen Steel,” 2021. <a href="https://doi.org/10.25518/esaform21.1911">https://doi.org/10.25518/esaform21.1911</a>.
  ieee: 'B. Uhe, C.-M. Kuball, M. Merklein, and G. Meschut, “Strength of self-piercing
    riveted Joints with conventional Rivets and Rivets made of High Nitrogen Steel,”
    presented at the 24th International Conference on Material Forming (ESAFORM),
    Liège, Belgien, 2021, doi: <a href="https://doi.org/10.25518/esaform21.1911">10.25518/esaform21.1911</a>.'
  mla: Uhe, Benedikt, et al. <i>Strength of Self-Piercing Riveted Joints with Conventional
    Rivets and Rivets Made of High Nitrogen Steel</i>. 2021, doi:<a href="https://doi.org/10.25518/esaform21.1911">10.25518/esaform21.1911</a>.
  short: 'B. Uhe, C.-M. Kuball, M. Merklein, G. Meschut, in: 2021.'
conference:
  end_date: 2021-04-16
  location: Liège, Belgien
  name: 24th International Conference on Material Forming (ESAFORM)
  start_date: 2021-04-14
date_created: 2021-05-31T10:17:37Z
date_updated: 2026-02-27T10:25:13Z
department:
- _id: '157'
doi: 10.25518/esaform21.1911
keyword:
- Self-piercing Riveting
- Joining Technology
- Rivet Geometry
- Rivet Material
- High Nitrogen Steel
- Joint Strength
language:
- iso: eng
quality_controlled: '1'
status: public
title: Strength of self-piercing riveted Joints with conventional Rivets and Rivets
  made of High Nitrogen Steel
type: conference
user_id: '53912'
year: '2021'
...
---
_id: '22272'
abstract:
- lang: eng
  text: The number of multi-material joints is increasing as a result of lightweight
    design. Self-piercing riveting (SPR) is an important mechanical joining technique
    for multi-material structures. Rivets for SPR are coated to prevent corrosion,
    but this coating also influences the friction that prevails during the joining
    process. The aim of the present investigation is to evaluate this influence. The
    investigation focuses on the common rivet coatings Almac® and zinc-nickel with
    topcoat as well as on uncoated rivet surfaces. First of all, the coating thickness
    and the uniformity of the coating distribution are analysed. Friction tests facilitate
    the classification of the surface properties. The influence of the friction on
    the characteristic joint parameters and the force-stroke curves is analysed by
    means of experimental joining tests. More in-depth knowledge of the effects that
    occur is achieved through the use of numerical simulation. Overall, it is shown
    that the surface condition of the rivet has an impact on the friction during the
    joining process and on the resulting joint. However, the detected deviations between
    different surface conditions do not restrict the operational capability of SPR
    and the properties of uncoated rivet surfaces, in particular, are similar to those
    of Almac®-coated rivets. It can thus be assumed that SPR with respect to the joining
    process is also possible without rivet coating in principle.
author:
- first_name: Benedikt
  full_name: Uhe, Benedikt
  id: '38131'
  last_name: Uhe
- first_name: Clara-Maria
  full_name: Kuball, Clara-Maria
  last_name: Kuball
- first_name: Marion
  full_name: Merklein, Marion
  last_name: Merklein
- first_name: Gerson
  full_name: Meschut, Gerson
  id: '32056'
  last_name: Meschut
  orcid: 0000-0002-2763-1246
citation:
  ama: Uhe B, Kuball C-M, Merklein M, Meschut G. Influence of the Rivet Coating on
    the Friction during Self-Piercing Riveting. <i>Key Engineering Materials</i>.
    2021;883:11-18. doi:<a href="https://doi.org/10.4028/www.scientific.net/KEM.883.11">10.4028/www.scientific.net/KEM.883.11</a>
  apa: Uhe, B., Kuball, C.-M., Merklein, M., &#38; Meschut, G. (2021). Influence of
    the Rivet Coating on the Friction during Self-Piercing Riveting. <i>Key Engineering
    Materials</i>, <i>883</i>, 11–18. <a href="https://doi.org/10.4028/www.scientific.net/KEM.883.11">https://doi.org/10.4028/www.scientific.net/KEM.883.11</a>
  bibtex: '@article{Uhe_Kuball_Merklein_Meschut_2021, title={Influence of the Rivet
    Coating on the Friction during Self-Piercing Riveting}, volume={883}, DOI={<a
    href="https://doi.org/10.4028/www.scientific.net/KEM.883.11">10.4028/www.scientific.net/KEM.883.11</a>},
    journal={Key Engineering Materials}, author={Uhe, Benedikt and Kuball, Clara-Maria
    and Merklein, Marion and Meschut, Gerson}, year={2021}, pages={11–18} }'
  chicago: 'Uhe, Benedikt, Clara-Maria Kuball, Marion Merklein, and Gerson Meschut.
    “Influence of the Rivet Coating on the Friction during Self-Piercing Riveting.”
    <i>Key Engineering Materials</i> 883 (2021): 11–18. <a href="https://doi.org/10.4028/www.scientific.net/KEM.883.11">https://doi.org/10.4028/www.scientific.net/KEM.883.11</a>.'
  ieee: 'B. Uhe, C.-M. Kuball, M. Merklein, and G. Meschut, “Influence of the Rivet
    Coating on the Friction during Self-Piercing Riveting,” <i>Key Engineering Materials</i>,
    vol. 883, pp. 11–18, 2021, doi: <a href="https://doi.org/10.4028/www.scientific.net/KEM.883.11">10.4028/www.scientific.net/KEM.883.11</a>.'
  mla: Uhe, Benedikt, et al. “Influence of the Rivet Coating on the Friction during
    Self-Piercing Riveting.” <i>Key Engineering Materials</i>, vol. 883, 2021, pp.
    11–18, doi:<a href="https://doi.org/10.4028/www.scientific.net/KEM.883.11">10.4028/www.scientific.net/KEM.883.11</a>.
  short: B. Uhe, C.-M. Kuball, M. Merklein, G. Meschut, Key Engineering Materials
    883 (2021) 11–18.
date_created: 2021-05-31T10:06:11Z
date_updated: 2026-02-27T10:23:33Z
department:
- _id: '157'
doi: 10.4028/www.scientific.net/KEM.883.11
intvolume: '       883'
keyword:
- Coating
- Friction
- Joining
language:
- iso: eng
page: 11-18
publication: Key Engineering Materials
quality_controlled: '1'
status: public
title: Influence of the Rivet Coating on the Friction during Self-Piercing Riveting
type: journal_article
user_id: '53912'
volume: 883
year: '2021'
...
---
_id: '19743'
author:
- first_name: Jan
  full_name: Ditter, Jan
  id: '22488'
  last_name: Ditter
citation:
  ama: Ditter J. <i>Methodenentwicklung zum Entfügen von Stahl-Klebverbindungen bei
    tiefen Temperaturen</i>.; 2020.
  apa: Ditter, J. (2020). <i>Methodenentwicklung zum Entfügen von Stahl-Klebverbindungen
    bei tiefen Temperaturen</i>.
  bibtex: '@book{Ditter_2020, title={Methodenentwicklung zum Entfügen von Stahl-Klebverbindungen
    bei tiefen Temperaturen}, author={Ditter, Jan}, year={2020} }'
  chicago: Ditter, Jan. <i>Methodenentwicklung zum Entfügen von Stahl-Klebverbindungen
    bei tiefen Temperaturen</i>, 2020.
  ieee: J. Ditter, <i>Methodenentwicklung zum Entfügen von Stahl-Klebverbindungen
    bei tiefen Temperaturen</i>. 2020.
  mla: Ditter, Jan. <i>Methodenentwicklung zum Entfügen von Stahl-Klebverbindungen
    bei tiefen Temperaturen</i>. 2020.
  short: J. Ditter, Methodenentwicklung zum Entfügen von Stahl-Klebverbindungen bei
    tiefen Temperaturen, 2020.
date_created: 2020-09-28T14:38:12Z
date_updated: 2022-01-06T06:54:12Z
department:
- _id: '157'
language:
- iso: ger
publication_identifier:
  isbn:
  - 978-3-8440-7530-4
publication_status: published
status: public
supervisor:
- first_name: Gerson
  full_name: Meschut, Gerson
  last_name: Meschut
title: Methodenentwicklung zum Entfügen von Stahl-Klebverbindungen bei tiefen Temperaturen
type: dissertation
user_id: '22488'
year: '2020'
...
---
_id: '19753'
author:
- first_name: Jan
  full_name: Ditter, Jan
  id: '22488'
  last_name: Ditter
- first_name: Tobias
  full_name: Aubel, Tobias
  last_name: Aubel
- first_name: Gerson
  full_name: Meschut, Gerson
  id: '32056'
  last_name: Meschut
  orcid: 0000-0002-2763-1246
citation:
  ama: Ditter J, Aubel T, Meschut G. Simple Determination of Fast Curing Parameters
    for Bonded Structures. <i>adhesion ADHESIVES + SEALANTS</i>. 2020;(1).
  apa: Ditter, J., Aubel, T., &#38; Meschut, G. (2020). Simple Determination of Fast
    Curing Parameters for Bonded Structures. <i>Adhesion ADHESIVES + SEALANTS</i>,
    (1).
  bibtex: '@article{Ditter_Aubel_Meschut_2020, title={Simple Determination of Fast
    Curing Parameters for Bonded Structures}, number={1}, journal={adhesion ADHESIVES
    + SEALANTS}, author={Ditter, Jan and Aubel, Tobias and Meschut, Gerson}, year={2020}
    }'
  chicago: Ditter, Jan, Tobias Aubel, and Gerson Meschut. “Simple Determination of
    Fast Curing Parameters for Bonded Structures.” <i>Adhesion ADHESIVES + SEALANTS</i>,
    no. 1 (2020).
  ieee: J. Ditter, T. Aubel, and G. Meschut, “Simple Determination of Fast Curing
    Parameters for Bonded Structures,” <i>adhesion ADHESIVES + SEALANTS</i>, no. 1,
    2020.
  mla: Ditter, Jan, et al. “Simple Determination of Fast Curing Parameters for Bonded
    Structures.” <i>Adhesion ADHESIVES + SEALANTS</i>, no. 1, 2020.
  short: J. Ditter, T. Aubel, G. Meschut, Adhesion ADHESIVES + SEALANTS (2020).
date_created: 2020-09-29T07:03:09Z
date_updated: 2022-01-06T06:54:12Z
department:
- _id: '157'
issue: '1'
language:
- iso: eng
publication: adhesion ADHESIVES + SEALANTS
status: public
title: Simple Determination of Fast Curing Parameters for Bonded Structures
type: journal_article
user_id: '22488'
year: '2020'
...
---
_id: '20145'
abstract:
- lang: ger
  text: "Der Karosseriebau ist zunehmend durch die Verwendung unterschiedlicher Werkstoffe
    in Mischbauweise gekennzeichnet, was zu einem Einsatz von mechanischen Fügeverfahren
    geführt hat. Hieraus resultieren die Zielsetzungen, die mechanischen Fügeverfahren
    in ihrer Effizienz und ihren Einsatzbereichen zu erweitern, sowie die Anzahl der
    Experimente zu reduzieren und Entwicklungszyklen zu verkürzen. Dies erfolgt mit
    Unterstützung der numerischen Simulation. Neben der Beschreibung des plastischen
    Verhaltens gilt es auch, das Schädigungsverhalten abzubilden.\r\n\r\nDer Fügeprozess
    bzw. die Fügerichtung erfolgt senkrecht zur Blechoberfläche und führt somit zu
    einem dreidimensionalen Zustand der Fügelemente. Hieraus leitet sich die Herausforderung
    ab, das Werkstoffversagen in Abhängigkeit der Beanspruchungssituation zu beschreiben.
    Ein einfacher Ansatz zur Abbildung des Durchdringens ist ein geometrisches Trennkriterium.\r\n\r\nEin
    solches Kriterium basiert i.d.R. auf einem experimentell beobachteten Verhalten
    und ist somit nicht prognosefähig für Variationen bzgl. Werkzeugkonfigurationen,
    Blechdicken- und Werkstoffgüten-Kombinationen. In diesem Projekt wird das Schädigungsmodell
    GISSMO (Generalized Incremental Stress State dependent damage Model) verwendet,
    um die Entwicklung der duktilen Schädigung zu beschreiben und den Bruchbeginn
    während des Stanzniet- und Schneidclinchens vorherzusagen.\r\n\r\nDer Spannungszustand
    während der Prozesssimulation wird untersucht und die verschiedenen Schädigungsproben
    werden experimentell erprobt, um die Versagenskurven zu charakterisieren. Die
    Versagenskurven werden im Schädigungsmodell GISSMO definiert. Um die Genauigkeit
    des Modells zu gewährleisten, wird die Verifizierung des Modells durch die Simulation
    von Schädigungsproben mit dem Schädigungsmodell durchgeführt.\r\n\r\nZur Validierung
    des Modells wird die Simulation des Fügeprozesses mit dem Schädigungsmodell durchgeführt
    und die Ergebnisse von Simulation und Experiment verglichen. Darüber hinaus werden
    Sensitivitätsanalysen durchgeführt, um die Einflüsse der Fertigungsprozesse, der
    Lackierung und des Diskretisierungsgrades auf das Schädigungsverhalten des Materials
    zu identifizieren.\r\nDas IGF-Vorhaben „Methodenentwicklung zur Schädigungsmodellierung
    für die numerische Prozesssimulation mechanischer Fügeverfahren\" der Forschungsvereinigung
    EFB e.V. wurde unter der Fördernummer AiF 19452N über die Arbeitsgemeinschaft
    industrieller Forschungsvereinigungen (AiF) im Rahmen des Programms zur Förderung
    der Industriellen Gemeinschaftsforschung (IGF) vom Bundesministerium für Wirtschaft
    und Energie aufgrund eines Beschlusses des Deutschen Bundestages gefördert. Der
    Abschlussbericht ist als EFB-Forschungsbericht Nr. 527 erschienen und bei der
    EFB-Geschäftsstelle und im Buchhandel erhältlich."
- lang: eng
  text: "The body construction is increasingly characterized by the use of different
    materials in multi-material-design, which has led to the application of a variety
    of mechanical joining processes. To enhance the mechanical joining processes in
    their efficiency, numerical simulation can be used as an effective tool to reduce
    the number of experiments and shorten the product development cycles. In addition
    to the description of the plasticity, the damage and the failure behavior of material
    must also be taken into account.\r\n\r\nIn self-pierce riveting simulations, the
    rivet penetrates perpendicular into the sheet surface and produces a three-dimensional
    stress state. Hence, it is essential to describe the material failure as a function
    of a three-dimensional stress state.\r\n\r\nA simple approach to describe the
    separation of upper sheet in the simulation of the joining process is based on
    a geometric separation criterion. Such a criterion is not predictive und cannot
    be used in case of variations in tool configurations, sheet thickness, and material
    combinations.\r\n\r\nIn this project, the damage model GISSMO (Generalized Incremental
    Stress State dependent damage Model) is used to describe the evolution of ductile
    damage and predict the onset of fracture during the self-piercing riveting and
    shear-clinching.\r\n\r\nThe stress state during the process simulation is studied
    and the variety of damage specimens are experimental examined to characterize
    the failure curves. The failure curves are defined in the GISSMO damage model.
    To ensure the accuracy of the model, the verification of the model using simulation
    of damage specimens with damage model is performed.\r\n\r\nFor the validation
    of model, the simulation of the joining process using the damage model is carried
    out and the results of simulation and experiment are compared. Furthermore, sensitivity
    analyses are performed to identify the influences of manufacturing processes,
    the evaluation method, and the degree of discretization on the damage behavior
    of material."
author:
- first_name: Mortaza
  full_name: Otroshi, Mortaza
  id: '71269'
  last_name: Otroshi
  orcid: 0000-0002-8652-9209
- first_name: Gerson
  full_name: Meschut, Gerson
  id: '32056'
  last_name: Meschut
  orcid: 0000-0002-2763-1246
citation:
  ama: Otroshi M, Meschut G. <i>Methodenentwicklung zur Schädigungsmodellierung für
    die numerische Prozesssimulation mechanischer Fügeverfahren</i>. Europäische Forschungsgesellschaft
    für Blechverarbeitung e.V.; 2020.
  apa: Otroshi, M., &#38; Meschut, G. (2020). <i>Methodenentwicklung zur Schädigungsmodellierung
    für die numerische Prozesssimulation mechanischer Fügeverfahren</i>. Europäische
    Forschungsgesellschaft für Blechverarbeitung e.V.
  bibtex: '@book{Otroshi_Meschut_2020, title={Methodenentwicklung zur Schädigungsmodellierung
    für die numerische Prozesssimulation mechanischer Fügeverfahren}, publisher={Europäische
    Forschungsgesellschaft für Blechverarbeitung e.V.}, author={Otroshi, Mortaza and
    Meschut, Gerson}, year={2020} }'
  chicago: Otroshi, Mortaza, and Gerson Meschut. <i>Methodenentwicklung zur Schädigungsmodellierung
    für die numerische Prozesssimulation mechanischer Fügeverfahren</i>. Europäische
    Forschungsgesellschaft für Blechverarbeitung e.V., 2020.
  ieee: M. Otroshi and G. Meschut, <i>Methodenentwicklung zur Schädigungsmodellierung
    für die numerische Prozesssimulation mechanischer Fügeverfahren</i>. Europäische
    Forschungsgesellschaft für Blechverarbeitung e.V., 2020.
  mla: Otroshi, Mortaza, and Gerson Meschut. <i>Methodenentwicklung zur Schädigungsmodellierung
    für die numerische Prozesssimulation mechanischer Fügeverfahren</i>. Europäische
    Forschungsgesellschaft für Blechverarbeitung e.V., 2020.
  short: M. Otroshi, G. Meschut, Methodenentwicklung zur Schädigungsmodellierung für
    die numerische Prozesssimulation mechanischer Fügeverfahren, Europäische Forschungsgesellschaft
    für Blechverarbeitung e.V., 2020.
date_created: 2020-10-21T06:41:26Z
date_updated: 2022-01-06T06:54:20Z
ddc:
- '620'
department:
- _id: '157'
file:
- access_level: closed
  content_type: image/jpeg
  creator: motroshi
  date_created: 2021-02-03T12:14:18Z
  date_updated: 2021-02-03T12:14:18Z
  file_id: '21151'
  file_name: Schädigunsmodellierung__efb527.jpg
  file_size: 12718
  relation: main_file
  success: 1
file_date_updated: 2021-02-03T12:14:18Z
has_accepted_license: '1'
language:
- iso: ger
main_file_link:
- url: https://ble-x.de/mydocs/1606
page: '182'
publication_identifier:
  isbn:
  - 978-3-86776-582-4
publication_status: published
publisher: Europäische Forschungsgesellschaft für Blechverarbeitung e.V.
report_number: '527'
status: public
title: Methodenentwicklung zur Schädigungsmodellierung für die numerische Prozesssimulation
  mechanischer Fügeverfahren
type: report
user_id: '71269'
year: '2020'
...
---
_id: '20146'
abstract:
- lang: eng
  text: "Joining technology is regarded as a key technology for reducing energy consumption
    and CO2 imitation as well as the use of innovative materials and development of
    new, resource-saving products. Punch riveting is a widely used and established
    joining process in many sectors. The white and brown goods, electrical engineering,
    construction and, in particular, the automotive industry are some of the sectors
    mentioned here.\r\n\r\nSince the design and assessment of punch rivet components
    with regard to structural durability can only be carried out experimentally using
    prototypes due to a lack of experience and calculation concepts, the improvement
    of this uneconomical and time-consuming procedure is the goal of this contribution.\r\n\r\nTherefore,
    a numerical simulation and design method for cyclically loads punched riveted
    joints shall be introduced. This concept shall be based on the notch strain concept.\r\n\r\nThe
    following steps are necessary to achieve the goal shown above:\r\n\r\n    Tensile
    tests on all materials involved in the joint for determination of tensile strength
    and quasi-static stress-strain curves\r\n    Estimation of the cyclic material
    properties from the tensile strength in order to obtain the strain-life curve
    and the cyclic stress-strain curve\r\n    Estimation of mean stress sensitivity
    from the tensile strength to conduct an amplitude transformation for variable
    amplitude loadings.\r\n    Execution of a 2D forming simulation of the joining
    process to determine the geometry and the stresses and degrees of deformation
    present in the connection\r\n    Transferring the results of the forming simulation
    into a static-mechanical load simulation for determining the relation between
    the external load and the elastic-plastic strain at the critical point\r\n    Estimation
    of the service life by means of the damage parameter Wöhler curves calculated
    from the strain-life curve\r\n\r\nIn order to verify the simulation and calculation
    method, service life investigations have been carried out on punched riveted components
    under constant and variable amplitude load.\r\n\r\nThe test results, as well as
    the workflow through the fatigue assessment and its accuracy in estimation the
    fatigue life will be shown in this contribution."
author:
- first_name: Lukas
  full_name: Masendorf, Lukas
  last_name: Masendorf
- first_name: Michael
  full_name: Wächter, Michael
  last_name: Wächter
- first_name: Stephan
  full_name: Horstmann, Stephan
  last_name: Horstmann
- first_name: Mortaza
  full_name: Otroshi, Mortaza
  id: '71269'
  last_name: Otroshi
  orcid: 0000-0002-8652-9209
- first_name: Alfons
  full_name: Esderts, Alfons
  last_name: Esderts
- first_name: Gerson
  full_name: Meschut, Gerson
  id: '32056'
  last_name: Meschut
  orcid: 0000-0002-2763-1246
citation:
  ama: 'Masendorf L, Wächter M, Horstmann S, Otroshi M, Esderts A, Meschut G. Linear
    damage accumulation of self-pierce riveted joints. In: Deutscher Verband für Materialforschung
    und -prüfung e.V.; 2020.'
  apa: 'Masendorf, L., Wächter, M., Horstmann, S., Otroshi, M., Esderts, A., &#38;
    Meschut, G. (2020). Linear damage accumulation of self-pierce riveted joints.
    Presented at the Fourth International Conference on Material and Component Performance
    under Variable Amplitude Loading, Darmstadt, Germany: Deutscher Verband für Materialforschung
    und -prüfung e.V.'
  bibtex: '@inproceedings{Masendorf_Wächter_Horstmann_Otroshi_Esderts_Meschut_2020,
    title={Linear damage accumulation of self-pierce riveted joints}, publisher={Deutscher
    Verband für Materialforschung und -prüfung e.V.}, author={Masendorf, Lukas and
    Wächter, Michael and Horstmann, Stephan and Otroshi, Mortaza and Esderts, Alfons
    and Meschut, Gerson}, year={2020} }'
  chicago: Masendorf, Lukas, Michael Wächter, Stephan Horstmann, Mortaza Otroshi,
    Alfons Esderts, and Gerson Meschut. “Linear Damage Accumulation of Self-Pierce
    Riveted Joints.” Deutscher Verband für Materialforschung und -prüfung e.V., 2020.
  ieee: L. Masendorf, M. Wächter, S. Horstmann, M. Otroshi, A. Esderts, and G. Meschut,
    “Linear damage accumulation of self-pierce riveted joints,” presented at the Fourth
    International Conference on Material and Component Performance under Variable
    Amplitude Loading, Darmstadt, Germany, 2020.
  mla: Masendorf, Lukas, et al. <i>Linear Damage Accumulation of Self-Pierce Riveted
    Joints</i>. Deutscher Verband für Materialforschung und -prüfung e.V., 2020.
  short: 'L. Masendorf, M. Wächter, S. Horstmann, M. Otroshi, A. Esderts, G. Meschut,
    in: Deutscher Verband für Materialforschung und -prüfung e.V., 2020.'
conference:
  end_date: 2020-04-01
  location: Darmstadt, Germany
  name: Fourth International Conference on Material and Component Performance under
    Variable Amplitude Loading
  start_date: 2020-03-30
date_created: 2020-10-21T06:55:12Z
date_updated: 2022-01-06T06:54:20Z
department:
- _id: '157'
keyword:
- punch rivet
- notch strain conept
- structural durability
language:
- iso: eng
publication_identifier:
  isbn:
  - 978-3-9820591-0-5
publication_status: published
publisher: Deutscher Verband für Materialforschung und -prüfung e.V.
status: public
title: Linear damage accumulation of self-pierce riveted joints
type: conference
user_id: '71269'
year: '2020'
...
---
_id: '20170'
author:
- first_name: Mortaza
  full_name: Otroshi, Mortaza
  id: '71269'
  last_name: Otroshi
  orcid: 0000-0002-8652-9209
- first_name: Gerson
  full_name: Meschut, Gerson
  id: '32056'
  last_name: Meschut
  orcid: 0000-0002-2763-1246
citation:
  ama: Otroshi M, Meschut G. Spannungszustandsabhängige Schädigungsmodellierung zum
    Halbhohlstanznieten. <i>Umformtechnik Blech Rohre Profile</i>. 2020;(7/20):48-50.
  apa: Otroshi, M., &#38; Meschut, G. (2020). Spannungszustandsabhängige Schädigungsmodellierung
    zum Halbhohlstanznieten. <i>Umformtechnik Blech Rohre Profile</i>, (7/20), 48–50.
  bibtex: '@article{Otroshi_Meschut_2020, title={Spannungszustandsabhängige Schädigungsmodellierung
    zum Halbhohlstanznieten}, number={7/20}, journal={Umformtechnik Blech Rohre Profile},
    author={Otroshi, Mortaza and Meschut, Gerson}, year={2020}, pages={48–50} }'
  chicago: 'Otroshi, Mortaza, and Gerson Meschut. “Spannungszustandsabhängige Schädigungsmodellierung
    zum Halbhohlstanznieten.” <i>Umformtechnik Blech Rohre Profile</i>, no. 7/20 (2020):
    48–50.'
  ieee: M. Otroshi and G. Meschut, “Spannungszustandsabhängige Schädigungsmodellierung
    zum Halbhohlstanznieten,” <i>Umformtechnik Blech Rohre Profile</i>, no. 7/20,
    pp. 48–50, 2020.
  mla: Otroshi, Mortaza, and Gerson Meschut. “Spannungszustandsabhängige Schädigungsmodellierung
    zum Halbhohlstanznieten.” <i>Umformtechnik Blech Rohre Profile</i>, no. 7/20,
    2020, pp. 48–50.
  short: M. Otroshi, G. Meschut, Umformtechnik Blech Rohre Profile (2020) 48–50.
date_created: 2020-10-22T07:31:23Z
date_updated: 2022-01-06T06:54:21Z
ddc:
- '620'
department:
- _id: '157'
file:
- access_level: open_access
  content_type: application/pdf
  creator: motroshi
  date_created: 2021-01-12T11:53:09Z
  date_updated: 2021-01-12T12:10:57Z
  file_id: '20898'
  file_name: Umformtechnik_BRP_7_2020.pdf
  file_size: 1162090
  relation: main_file
file_date_updated: 2021-01-12T12:10:57Z
has_accepted_license: '1'
issue: 7/20
language:
- iso: ger
main_file_link:
- open_access: '1'
  url: https://umformtechnik.net/blech/Inhalte/Aus-der-Forschung/Spannungszustandsabhaengige-Schaedigungsmodellierung-zum-Halbhohlstanznieten
oa: '1'
page: 48-50
publication: Umformtechnik Blech Rohre Profile
publication_identifier:
  issn:
  - 0300-3167
publication_status: published
status: public
title: Spannungszustandsabhängige Schädigungsmodellierung zum Halbhohlstanznieten
type: journal_article
user_id: '68518'
year: '2020'
...
---
_id: '20235'
author:
- first_name: Per
  full_name: Heyser, Per
  id: '40450'
  last_name: Heyser
- first_name: Vadim
  full_name: Sartisson, Vadim
  last_name: Sartisson
- first_name: Gerson
  full_name: Meschut, Gerson
  id: '32056'
  last_name: Meschut
  orcid: 0000-0002-2763-1246
- first_name: Marcel
  full_name: Droß, Marcel
  last_name: Droß
- first_name: Klaus
  full_name: Dröder, Klaus
  last_name: Dröder
citation:
  ama: Heyser P, Sartisson V, Meschut G, Droß M, Dröder K. Increased load bearing
    capacity of mechanically joined FRP/metal joints using a pin structured auxiliary
    joining element. <i>Materials Testing</i>. 2020:55-60. doi:<a href="https://doi.org/10.3139/120.111453">10.3139/120.111453</a>
  apa: Heyser, P., Sartisson, V., Meschut, G., Droß, M., &#38; Dröder, K. (2020).
    Increased load bearing capacity of mechanically joined FRP/metal joints using
    a pin structured auxiliary joining element. <i>Materials Testing</i>, 55–60. <a
    href="https://doi.org/10.3139/120.111453">https://doi.org/10.3139/120.111453</a>
  bibtex: '@article{Heyser_Sartisson_Meschut_Droß_Dröder_2020, title={Increased load
    bearing capacity of mechanically joined FRP/metal joints using a pin structured
    auxiliary joining element}, DOI={<a href="https://doi.org/10.3139/120.111453">10.3139/120.111453</a>},
    journal={Materials Testing}, author={Heyser, Per and Sartisson, Vadim and Meschut,
    Gerson and Droß, Marcel and Dröder, Klaus}, year={2020}, pages={55–60} }'
  chicago: Heyser, Per, Vadim Sartisson, Gerson Meschut, Marcel Droß, and Klaus Dröder.
    “Increased Load Bearing Capacity of Mechanically Joined FRP/Metal Joints Using
    a Pin Structured Auxiliary Joining Element.” <i>Materials Testing</i>, 2020, 55–60.
    <a href="https://doi.org/10.3139/120.111453">https://doi.org/10.3139/120.111453</a>.
  ieee: P. Heyser, V. Sartisson, G. Meschut, M. Droß, and K. Dröder, “Increased load
    bearing capacity of mechanically joined FRP/metal joints using a pin structured
    auxiliary joining element,” <i>Materials Testing</i>, pp. 55–60, 2020.
  mla: Heyser, Per, et al. “Increased Load Bearing Capacity of Mechanically Joined
    FRP/Metal Joints Using a Pin Structured Auxiliary Joining Element.” <i>Materials
    Testing</i>, 2020, pp. 55–60, doi:<a href="https://doi.org/10.3139/120.111453">10.3139/120.111453</a>.
  short: P. Heyser, V. Sartisson, G. Meschut, M. Droß, K. Dröder, Materials Testing
    (2020) 55–60.
date_created: 2020-10-30T14:30:10Z
date_updated: 2022-01-06T06:54:24Z
department:
- _id: '157'
doi: 10.3139/120.111453
language:
- iso: eng
page: 55-60
publication: Materials Testing
publication_identifier:
  issn:
  - 0025-5300
  - 2195-8572
publication_status: published
quality_controlled: '1'
status: public
title: Increased load bearing capacity of mechanically joined FRP/metal joints using
  a pin structured auxiliary joining element
type: journal_article
user_id: '40450'
year: '2020'
...
---
_id: '20269'
author:
- first_name: Christoph
  full_name: Böhne, Christoph
  id: '22483'
  last_name: Böhne
- first_name: Gerson
  full_name: Meschut, Gerson
  id: '32056'
  last_name: Meschut
  orcid: 0000-0002-2763-1246
- first_name: Max
  full_name: Biegler, Max
  last_name: Biegler
- first_name: Michael
  full_name: Rethmeier, Michael
  last_name: Rethmeier
citation:
  ama: Böhne C, Meschut G, Biegler M, Rethmeier M. Avoidance of liquid metal embrittlement
    during resistance spot welding by heat input dependent hold time adaption. <i>Science
    and Technology of Welding and Joining</i>. 2020;25(7):617-624. doi:<a href="https://doi.org/10.1080/13621718.2019.1693731">10.1080/13621718.2019.1693731</a>
  apa: Böhne, C., Meschut, G., Biegler, M., &#38; Rethmeier, M. (2020). Avoidance
    of liquid metal embrittlement during resistance spot welding by heat input dependent
    hold time adaption. <i>Science and Technology of Welding and Joining</i>, <i>25</i>(7),
    617–624. <a href="https://doi.org/10.1080/13621718.2019.1693731">https://doi.org/10.1080/13621718.2019.1693731</a>
  bibtex: '@article{Böhne_Meschut_Biegler_Rethmeier_2020, title={Avoidance of liquid
    metal embrittlement during resistance spot welding by heat input dependent hold
    time adaption}, volume={25}, DOI={<a href="https://doi.org/10.1080/13621718.2019.1693731">10.1080/13621718.2019.1693731</a>},
    number={7}, journal={Science and Technology of Welding and Joining}, publisher={Taylor
    &#38; Francis}, author={Böhne, Christoph and Meschut, Gerson and Biegler, Max
    and Rethmeier, Michael}, year={2020}, pages={617–624} }'
  chicago: 'Böhne, Christoph, Gerson Meschut, Max Biegler, and Michael Rethmeier.
    “Avoidance of Liquid Metal Embrittlement during Resistance Spot Welding by Heat
    Input Dependent Hold Time Adaption.” <i>Science and Technology of Welding and
    Joining</i> 25, no. 7 (2020): 617–24. <a href="https://doi.org/10.1080/13621718.2019.1693731">https://doi.org/10.1080/13621718.2019.1693731</a>.'
  ieee: C. Böhne, G. Meschut, M. Biegler, and M. Rethmeier, “Avoidance of liquid metal
    embrittlement during resistance spot welding by heat input dependent hold time
    adaption,” <i>Science and Technology of Welding and Joining</i>, vol. 25, no.
    7, pp. 617–624, 2020.
  mla: Böhne, Christoph, et al. “Avoidance of Liquid Metal Embrittlement during Resistance
    Spot Welding by Heat Input Dependent Hold Time Adaption.” <i>Science and Technology
    of Welding and Joining</i>, vol. 25, no. 7, Taylor &#38; Francis, 2020, pp. 617–24,
    doi:<a href="https://doi.org/10.1080/13621718.2019.1693731">10.1080/13621718.2019.1693731</a>.
  short: C. Böhne, G. Meschut, M. Biegler, M. Rethmeier, Science and Technology of
    Welding and Joining 25 (2020) 617–624.
date_created: 2020-11-03T13:28:23Z
date_updated: 2022-01-06T06:54:25Z
department:
- _id: '157'
doi: 10.1080/13621718.2019.1693731
intvolume: '        25'
issue: '7'
language:
- iso: eng
page: 617-624
publication: Science and Technology of Welding and Joining
publisher: Taylor & Francis
status: public
title: Avoidance of liquid metal embrittlement during resistance spot welding by heat
  input dependent hold time adaption
type: journal_article
user_id: '22483'
volume: 25
year: '2020'
...
---
_id: '20273'
author:
- first_name: Max
  full_name: Biegler, Max
  last_name: Biegler
- first_name: Michael
  full_name: Rethmeier, Michael
  last_name: Rethmeier
- first_name: Christoph
  full_name: Böhne, Christoph
  id: '22483'
  last_name: Böhne
- first_name: Gerson
  full_name: Meschut, Gerson
  id: '32056'
  last_name: Meschut
  orcid: 0000-0002-2763-1246
citation:
  ama: 'Biegler M, Rethmeier M, Böhne C, Meschut G. Resistance spot welding simulation
    can determine the critical stress- and strain-conditions leading to liquid metal
    embrittlement formation. In: <i>Joining in Car Body Engineering</i>. Bad Nauheim;
    2020.'
  apa: Biegler, M., Rethmeier, M., Böhne, C., &#38; Meschut, G. (2020). Resistance
    spot welding simulation can determine the critical stress- and strain-conditions
    leading to liquid metal embrittlement formation. In <i>Joining in Car Body Engineering</i>.
    Bad Nauheim.
  bibtex: '@inproceedings{Biegler_Rethmeier_Böhne_Meschut_2020, place={Bad Nauheim},
    title={Resistance spot welding simulation can determine the critical stress- and
    strain-conditions leading to liquid metal embrittlement formation}, booktitle={Joining
    in Car Body Engineering}, author={Biegler, Max and Rethmeier, Michael and Böhne,
    Christoph and Meschut, Gerson}, year={2020} }'
  chicago: Biegler, Max, Michael Rethmeier, Christoph Böhne, and Gerson Meschut. “Resistance
    Spot Welding Simulation Can Determine the Critical Stress- and Strain-Conditions
    Leading to Liquid Metal Embrittlement Formation.” In <i>Joining in Car Body Engineering</i>.
    Bad Nauheim, 2020.
  ieee: M. Biegler, M. Rethmeier, C. Böhne, and G. Meschut, “Resistance spot welding
    simulation can determine the critical stress- and strain-conditions leading to
    liquid metal embrittlement formation,” in <i>Joining in Car Body Engineering</i>,
    2020.
  mla: Biegler, Max, et al. “Resistance Spot Welding Simulation Can Determine the
    Critical Stress- and Strain-Conditions Leading to Liquid Metal Embrittlement Formation.”
    <i>Joining in Car Body Engineering</i>, 2020.
  short: 'M. Biegler, M. Rethmeier, C. Böhne, G. Meschut, in: Joining in Car Body
    Engineering, Bad Nauheim, 2020.'
date_created: 2020-11-03T13:59:29Z
date_updated: 2022-01-06T06:54:25Z
department:
- _id: '157'
language:
- iso: eng
place: Bad Nauheim
publication: Joining in Car Body Engineering
status: public
title: Resistance spot welding simulation can determine the critical stress- and strain-conditions
  leading to liquid metal embrittlement formation
type: conference
user_id: '22483'
year: '2020'
...
---
_id: '21152'
abstract:
- lang: eng
  text: 'In modern lightweight designs, it is important to find a compromise between
    the strength and the weight of the construction detail. Hence, hybrid structures
    made of aluminum and steel materials are increasingly being used in automotive
    applications. Due to limitations in the quality of resistance spot welding, self-piercing
    riveting can be used as an alternative process to join sheets from different material
    groups. The aim of this project is to develop a computational method to assess
    the self-piercing riveted components subjected to the cyclic loads. To achieve
    this goal, two approaches are followed: Evaluation unsing internal forces: A substitute
    model is developed to describe the stiffness of self-piercing riveted joints subjected
    to different loading conditions. The parameters of the substitute model are identified
    and the internal force components acting on the joint are evaluated. The model
    provides the basis for the subsequent fatigue life estimation of self-piercing
    riveted components. For joints subjected to low bending moments, the fatigue life
    of components can be estimated accurately. Due to lack of specimen geometries
    producing pure bending and the combination of tension-bending forces, it is not
    possible to estimate the fatigue life of complex components subjected to high
    bending moments. Based on the results of [Mesc 16], the methodology is further
    developed to determine the stresses acting on the joint and to characterize the
    joining point with the use of simulations. The local concept proposed in the FKM
    guideline nonlinear provides the basis for the analytical assessment of self-piercing
    riveted components. In this regard, the cyclic behavior of the material and the
    local stresses are required as input data. The cyclic behavior of the aluminum
    EN AW-6181A-T6 and steel HX340LAD sheets were already determined in the previous
    project. Subsequently, in this project the properties of the rivet made of 38B2
    steel are identified. The finite element analysis using elastic-plastic material
    behavior is used to determine the stresses in the joint subjected to the cyclic
    loads. To verify the model, the results of simulations and experiments are compared
    concerning the crack initiation zone as well as the determined number of cycles.
    To determine the stresses that can be used for the analytical assessment, the
    damage relevant load components need to be identified. In this regard, it is recommended
    to use the normal stress perpendicular to the crack propagation direction, the
    stress of crack opening mode I. Using the damage parameter PRAM and considering
    the support factors according to the FKM guideline nonlinear, a reliable estimation
    of the crack initiation zone within the joint is possible. Regarding the joint
    made of aluminum sheet EN AW-6181A, the methodology is able to provide promising
    results. However, regarding the joints made of aluminum EN AW-6181A and steel
    HX340LAD sheets, there is still potential to improve the results. The reasons
    for this are described in chapter 7.2.5 and 7.2.6. An analytical fatigue assessment
    is relatively easy to achieve with procedure 1. However, contrary to the objective
    formulated above, expensive fatigue tests are necessary to determine the failure
    conditions (strength values). This disadvantage can be circumvented by determining
    the strength information of individual joining points under different load types
    using procedure 2. The latter, in return, is not suitable for the assessment of
    complex components with several joining points. Due to the increasing calculation
    times of the simulation, the application in this case is not economically reasonable.
    By the described combination of method 1 and 2, the disadvantages of the two individual
    concepts can be compensated. An analytical fatigue assessment of self-piercing
    riveted components can be carried out based on the cyclic material behavior. The
    objective of the project was achieved.'
- lang: ger
  text: 'Hybridstrukturen aus Aluminium- und Stahlblechen, wie sie bei modernen Leichtbaukonstruktionen
    immer häufiger vorkommen, sind oft ein guter Kompromiss zwischen Festigkeit und
    Gewicht der Konstruktion. Das in der Blechverarbeitung häufig eingesetzte Widerstandspunktschweißen
    führt bei der Verbindung von artverschiedenen Werkstoffen häufig nicht zu der
    gewünschten Verbindungsqualität. In solchen Fällen kann das mechanische Fügen
    mittels Halbhohlstanzniet eine gute Alternative darstellen. Das Ziel dieses Forschungsprojektes
    ist die Entwicklung einer Berechnungsmethode zur Auslegung von zyklisch belasteten
    halbhohlstanzgenieteten Bauteilen. Die zu entwickelnde Berechnungsmethodik soll
    dem späteren Anwender eine Bauteilauslegung mit möglichst geringem experimentellem
    Aufwand ermöglichen. Um dieses Ziel zu erreichen, werden zwei Vorgehensweisen
    verfolgt: Vorgehensweise über örtliche Schnittlasten: Für komplexe Geometrien
    wird ein Ersatzmodell des Fügepunktes entwickelt, welches dieselben Steifigkeiten
    wie der reale Fügepunkt aufweist. Mit den Kraftkomponenten, die auf den Ersatzfügepunkt
    wirken und dessen simulativer oder experimenteller Charakterisierung, kann die
    Lebensdauer für komplexe Bauteile abgeschätzt werden. Für Fügeverbindungen, bei
    denen am Fügepunkt nur eine geringe Biegebeanspruchung auftritt, kann mit Hilfe
    des experimentell charakterisierten Fügepunktes eine treffsichere Lebensdauerabschätzung
    durchgeführt werden. Aufgrund des Fehlens einer geeigneten Probenform zur Charakterisierung
    des Fügepunktes unter Biegebelastung zeigt die Treffsicherheit bei hohen Biegebeanspruchungen
    am Fügepunkt Verbesserungspotenzial. Auf Basis der Ergebnisse aus [Mesc 16] wird
    die Methodik zur Ermittlung der Beanspruchungen in der Fügeverbindung weiterentwickelt
    und Erkenntnisse über Einflüsse auf die örtlichen Beanspruchungen gewonnen, um
    den Fügepunkt simulativ charakterisieren zu können. Eine solche Möglichkeit bietet
    die Anwendung des Örtlichen Konzeptes, das in der FKM-Richtlinie nichtlinear für
    homogene Werkstoffe standardisiert ist. Der dort beschriebene Algorithmus wird
    als Ausgangspunkt für die rechnerische Auslegung von Stanznietverbindungen genommen
    und an deren Bedürfnisse angepasst. Als Eingangsdaten zur Auslegung werden das
    zyklische Werkstoffverhalten und die Beanspruchungen in der Fügeverbindung benötigt.
    Das zyklische Werkstoffverhalten der Bleche aus Aluminium EN AW-6181A-T6 und Stahl
    HX340LAD wurde im Vorgängerprojekt bereits bestimmt. In diesem Projekt folgt die
    noch fehlende Charakterisierung des Nietwerkstoffs, des Stahls 38B2 H4. Die Bestimmung
    der Beanspruchungen in der Fügeverbindung unter zyklischer Belastung erfolgt mit
    Hilfe einer Finite-Elemente-Analyse mit elastisch-plastischem Verformungsverhalten.
    Verifiziert werden die Simulationsergebnisse, indem die Versagensorte aus Simulation
    und Versuch sowie die berechneten und experimentellen Lebensdauern miteinander
    verglichen werden. Zur Berechnung der Beanspruchungen muss die schädigungsrelevante
    Beanspruchungsgröße identifiziert werden. Hier wird die Normalspannung senkrecht
    zur Rissausbreitung, die sogenannte rissöffnende oder Mode I Spannung, als auszuwertende
    Beanspruchungsgröße empfohlen. Mit der Verwendung des Schädigungsparameters PRAM
    und unter Berücksichtigung der Stützwirkung entsprechend der FKM-Richtlinie nichtlinear
    ist eine zuverlässige Abschätzung des Versagensortes in der Fügeverbindung möglich.
    Für die Fügeverbindung aus dem Aluminiumblech EN AW-6181A ist mit dieser Methodik
    auch eine Lebensdauerabschätzung möglich. Für die Verbindungen, in denen das Aluminiumblech
    EN AW-6181A und das Stahlblech HX340LAD kombiniert werden, zeigt die Treffsicherheit
    jedoch noch erkennbares Verbesserungspotential. Die Gründe hierfür werden in Kapitel
    7.2.5 und 7.2.6 beschrieben. Eine rechnerische Betriebsfestigkeitsauslegung ist
    mit Vorgehensweise 1 vergleichsweise einfach möglich. Jedoch sind entgegen des
    oben formulierten Ziels aufwendige Schwingversuche zur Bestimmung der Versagensbedingungen
    (Festigkeitswerte) notwendig. Dieser Nachteil kann umgangen werden, indem die
    Festigkeitsinformationen des einzelnen Fügepunktes unter verschiedenen Belastungsarten
    mithilfe von Vorgehensweise 2 ermittelt werden. Letztere wiederum eignet sich
    selbst nicht für eine Auslegung komplexer Bauteile mit mehreren Fügepunkten. Aufgrund
    der steigenden Berechnungsdauern der Simulation, ist die Anwendung in diesem Fall
    wirtschaftlich nicht sinnvoll. Durch die beschriebene Kombinationsmethode können
    die Nachteile der beiden einzelnen Konzepte kompensiert und eine rechnerische
    Betriebsfestigkeitsauslegung stanzgenieteter Bauteile basierend auf den zyklischen
    Werkstoffkennwerten durchgeführt werden. Das Ziel des Forschungsvorhabens wurde
    erreicht. Das IGF-Vorhaben „Simulationsbasierte Betriebsfestigkeitsanalyse stanzgenieteter
    Bauteile" der Forschungsvereinigung EFB e.V. wurde unter der Fördernummer AiF
    19760N über die Arbeitsgemeinschaft industrieller Forschungsvereinigungen (AiF)
    im Rahmen des Programms zur Förderung der Industriellen Gemeinschaftsforschung
    (IGF) vom Bundesministerium für Wirtschaft und Energie aufgrund eines Beschlusses
    des Deutschen Bundestages gefördert. Der Abschlussbericht ist als EFB-Forschungsbericht
    Nr. 545 erschienen und bei der EFB-Geschäftsstelle und im Buchhandel erhältlich.'
author:
- first_name: Mortaza
  full_name: Otroshi, Mortaza
  id: '71269'
  last_name: Otroshi
  orcid: 0000-0002-8652-9209
- first_name: Gerson
  full_name: Meschut, Gerson
  id: '32056'
  last_name: Meschut
  orcid: 0000-0002-2763-1246
- first_name: Lukas
  full_name: Masendorf, Lukas
  last_name: Masendorf
- first_name: Alfons
  full_name: Esderts, Alfons
  last_name: Esderts
citation:
  ama: Otroshi M, Meschut G, Masendorf L, Esderts A. <i>Simulationsbasierte Betriebsfestigkeitsanalyse
    stanzgenieteter Bauteile</i>. Europäische Forschungsgesellschaft für Blechverarbeitung
    e.V. (EFB); 2020.
  apa: Otroshi, M., Meschut, G., Masendorf, L., &#38; Esderts, A. (2020). <i>Simulationsbasierte
    Betriebsfestigkeitsanalyse stanzgenieteter Bauteile</i>. Europäische Forschungsgesellschaft
    für Blechverarbeitung e.V. (EFB).
  bibtex: '@book{Otroshi_Meschut_Masendorf_Esderts_2020, title={Simulationsbasierte
    Betriebsfestigkeitsanalyse stanzgenieteter Bauteile}, publisher={Europäische Forschungsgesellschaft
    für Blechverarbeitung e.V. (EFB)}, author={Otroshi, Mortaza and Meschut, Gerson
    and Masendorf, Lukas and Esderts, Alfons}, year={2020} }'
  chicago: Otroshi, Mortaza, Gerson Meschut, Lukas Masendorf, and Alfons Esderts.
    <i>Simulationsbasierte Betriebsfestigkeitsanalyse stanzgenieteter Bauteile</i>.
    Europäische Forschungsgesellschaft für Blechverarbeitung e.V. (EFB), 2020.
  ieee: M. Otroshi, G. Meschut, L. Masendorf, and A. Esderts, <i>Simulationsbasierte
    Betriebsfestigkeitsanalyse stanzgenieteter Bauteile</i>. Europäische Forschungsgesellschaft
    für Blechverarbeitung e.V. (EFB), 2020.
  mla: Otroshi, Mortaza, et al. <i>Simulationsbasierte Betriebsfestigkeitsanalyse
    stanzgenieteter Bauteile</i>. Europäische Forschungsgesellschaft für Blechverarbeitung
    e.V. (EFB), 2020.
  short: M. Otroshi, G. Meschut, L. Masendorf, A. Esderts, Simulationsbasierte Betriebsfestigkeitsanalyse
    stanzgenieteter Bauteile, Europäische Forschungsgesellschaft für Blechverarbeitung
    e.V. (EFB), 2020.
date_created: 2021-02-03T12:23:41Z
date_updated: 2022-01-06T06:54:47Z
ddc:
- '620'
department:
- _id: '157'
file:
- access_level: closed
  content_type: image/jpeg
  creator: motroshi
  date_created: 2021-02-03T12:19:32Z
  date_updated: 2021-02-03T12:19:32Z
  file_id: '21153'
  file_name: Simulation BF Stanznieten_EFB 545.jpg
  file_size: 8819
  relation: main_file
  success: 1
file_date_updated: 2021-02-03T12:19:32Z
has_accepted_license: '1'
language:
- iso: ger
main_file_link:
- url: https://www.efb.de/efb-forschungsbericht-nr-545.html
page: '282'
publication_identifier:
  isbn:
  - 978-3-86776-602-9
publication_status: published
publisher: Europäische Forschungsgesellschaft für Blechverarbeitung e.V. (EFB)
report_number: '545'
status: public
title: Simulationsbasierte Betriebsfestigkeitsanalyse stanzgenieteter Bauteile
type: report
user_id: '71269'
year: '2020'
...
---
_id: '19178'
author:
- first_name: Jannik
  full_name: Kowatz, Jannik
  id: '32252'
  last_name: Kowatz
- first_name: Dominik
  full_name: Teutenberg, Dominik
  id: '537'
  last_name: Teutenberg
- first_name: Gerson
  full_name: Meschut, Gerson
  id: '32056'
  last_name: Meschut
  orcid: 0000-0002-2763-1246
citation:
  ama: 'Kowatz J, Teutenberg D, Meschut G. Auslegungsmethode für zyklisch beanspruchte
    Stahl/CFK-Klebverbindungen unter besonderer Berücksichtigung des Rissfortschritts.
    In: DECHEMA, Gesellschaft für Chemische Technik und Biotechnologie e.V., ed. <i>20.
    Kolloquium Gemeinsame Forschung in der Klebtechnik</i>. ; 2020.'
  apa: Kowatz, J., Teutenberg, D., &#38; Meschut, G. (2020). Auslegungsmethode für
    zyklisch beanspruchte Stahl/CFK-Klebverbindungen unter besonderer Berücksichtigung
    des Rissfortschritts. In DECHEMA, Gesellschaft für Chemische Technik und Biotechnologie
    e.V. (Ed.), <i>20. Kolloquium Gemeinsame Forschung in der Klebtechnik</i>. Würzburg.
  bibtex: '@inproceedings{Kowatz_Teutenberg_Meschut_2020, title={Auslegungsmethode
    für zyklisch beanspruchte Stahl/CFK-Klebverbindungen unter besonderer Berücksichtigung
    des Rissfortschritts}, booktitle={20. Kolloquium Gemeinsame Forschung in der Klebtechnik},
    author={Kowatz, Jannik and Teutenberg, Dominik and Meschut, Gerson}, editor={DECHEMA,
    Gesellschaft für Chemische Technik und Biotechnologie e.V.Editor}, year={2020}
    }'
  chicago: Kowatz, Jannik, Dominik Teutenberg, and Gerson Meschut. “Auslegungsmethode
    für zyklisch beanspruchte Stahl/CFK-Klebverbindungen unter besonderer Berücksichtigung
    des Rissfortschritts.” In <i>20. Kolloquium Gemeinsame Forschung in der Klebtechnik</i>,
    edited by DECHEMA, Gesellschaft für Chemische Technik und Biotechnologie e.V.,
    2020.
  ieee: J. Kowatz, D. Teutenberg, and G. Meschut, “Auslegungsmethode für zyklisch
    beanspruchte Stahl/CFK-Klebverbindungen unter besonderer Berücksichtigung des
    Rissfortschritts,” in <i>20. Kolloquium Gemeinsame Forschung in der Klebtechnik</i>,
    Würzburg, 2020.
  mla: Kowatz, Jannik, et al. “Auslegungsmethode für zyklisch beanspruchte Stahl/CFK-Klebverbindungen
    unter besonderer Berücksichtigung des Rissfortschritts.” <i>20. Kolloquium Gemeinsame
    Forschung in der Klebtechnik</i>, edited by DECHEMA, Gesellschaft für Chemische
    Technik und Biotechnologie e.V., 2020.
  short: 'J. Kowatz, D. Teutenberg, G. Meschut, in: DECHEMA, Gesellschaft für Chemische
    Technik und Biotechnologie e.V. (Ed.), 20. Kolloquium Gemeinsame Forschung in
    der Klebtechnik, 2020.'
conference:
  end_date: 2020-03-04
  location: Würzburg
  name: 20. Kolloquium Gemeinsame Forschung in der Klebtechnik
  start_date: 2020-03-03
corporate_editor:
- DECHEMA, Gesellschaft für Chemische Technik und Biotechnologie e.V.
date_created: 2020-09-09T07:54:20Z
date_updated: 2022-01-06T06:53:59Z
department:
- _id: '157'
language:
- iso: ger
publication: 20. Kolloquium Gemeinsame Forschung in der Klebtechnik
status: public
title: Auslegungsmethode für zyklisch beanspruchte Stahl/CFK-Klebverbindungen unter
  besonderer Berücksichtigung des Rissfortschritts
type: conference
user_id: '32252'
year: '2020'
...
---
_id: '20301'
author:
- first_name: Heinrich
  full_name: Günter, Heinrich
  id: '66472'
  last_name: Günter
- first_name: Gerson
  full_name: Meschut, Gerson
  id: '32056'
  last_name: Meschut
  orcid: 0000-0002-2763-1246
citation:
  ama: 'Günter H, Meschut G. Joining of high-strength steel grades in lightweight
    structures using single-stage resistance element welding on conventional resistance
    spot welding machines. In: <i>73rd IIW Annual Assembly and International Conference</i>.
    ; 2020.'
  apa: Günter, H., &#38; Meschut, G. (2020). Joining of high-strength steel grades
    in lightweight structures using single-stage resistance element welding on conventional
    resistance spot welding machines. In <i>73rd IIW Annual Assembly and International
    Conference</i>.
  bibtex: '@inproceedings{Günter_Meschut_2020, title={Joining of high-strength steel
    grades in lightweight structures using single-stage resistance element welding
    on conventional resistance spot welding machines}, booktitle={73rd IIW Annual
    Assembly and International Conference}, author={Günter, Heinrich and Meschut,
    Gerson}, year={2020} }'
  chicago: Günter, Heinrich, and Gerson Meschut. “Joining of High-Strength Steel Grades
    in Lightweight Structures Using Single-Stage Resistance Element Welding on Conventional
    Resistance Spot Welding Machines.” In <i>73rd IIW Annual Assembly and International
    Conference</i>, 2020.
  ieee: H. Günter and G. Meschut, “Joining of high-strength steel grades in lightweight
    structures using single-stage resistance element welding on conventional resistance
    spot welding machines,” in <i>73rd IIW Annual Assembly and International Conference</i>,
    2020.
  mla: Günter, Heinrich, and Gerson Meschut. “Joining of High-Strength Steel Grades
    in Lightweight Structures Using Single-Stage Resistance Element Welding on Conventional
    Resistance Spot Welding Machines.” <i>73rd IIW Annual Assembly and International
    Conference</i>, 2020.
  short: 'H. Günter, G. Meschut, in: 73rd IIW Annual Assembly and International Conference,
    2020.'
date_created: 2020-11-05T11:56:00Z
date_updated: 2022-01-06T06:54:25Z
department:
- _id: '157'
language:
- iso: eng
publication: 73rd IIW Annual Assembly and International Conference
publication_status: published
status: public
title: Joining of high-strength steel grades in lightweight structures using single-stage
  resistance element welding on conventional resistance spot welding machines
type: conference
user_id: '66472'
year: '2020'
...
---
_id: '20316'
author:
- first_name: Christopher
  full_name: Krüger, Christopher
  last_name: Krüger
- first_name: Tobias
  full_name: Schmolke, Tobias
  id: '44759'
  last_name: Schmolke
- first_name: David
  full_name: Merdivan, David
  last_name: Merdivan
- first_name: Sebastian
  full_name: Spohr, Sebastian
  last_name: Spohr
- first_name: Peter
  full_name: Urban, Peter
  last_name: Urban
- first_name: Gerson
  full_name: Meschut, Gerson
  id: '32056'
  last_name: Meschut
  orcid: 0000-0002-2763-1246
citation:
  ama: 'Krüger C, Schmolke T, Merdivan D, Spohr S, Urban P, Meschut G. Concept Development
    for a Functional Integrated Lightweight Battery Housing with Special Consideration
    of the Joining Technology. In: ; 2020.'
  apa: Krüger, C., Schmolke, T., Merdivan, D., Spohr, S., Urban, P., &#38; Meschut,
    G. (2020). Concept Development for a Functional Integrated Lightweight Battery
    Housing with Special Consideration of the Joining Technology. Presented at the
    Aachen Body Engineering Days 2020, Aachen.
  bibtex: '@inproceedings{Krüger_Schmolke_Merdivan_Spohr_Urban_Meschut_2020, title={Concept
    Development for a Functional Integrated Lightweight Battery Housing with Special
    Consideration of the Joining Technology}, author={Krüger, Christopher and Schmolke,
    Tobias and Merdivan, David and Spohr, Sebastian and Urban, Peter and Meschut,
    Gerson}, year={2020} }'
  chicago: Krüger, Christopher, Tobias Schmolke, David Merdivan, Sebastian Spohr,
    Peter Urban, and Gerson Meschut. “Concept Development for a Functional Integrated
    Lightweight Battery Housing with Special Consideration of the Joining Technology,”
    2020.
  ieee: C. Krüger, T. Schmolke, D. Merdivan, S. Spohr, P. Urban, and G. Meschut, “Concept
    Development for a Functional Integrated Lightweight Battery Housing with Special
    Consideration of the Joining Technology,” presented at the Aachen Body Engineering
    Days 2020, Aachen, 2020.
  mla: Krüger, Christopher, et al. <i>Concept Development for a Functional Integrated
    Lightweight Battery Housing with Special Consideration of the Joining Technology</i>.
    2020.
  short: 'C. Krüger, T. Schmolke, D. Merdivan, S. Spohr, P. Urban, G. Meschut, in:
    2020.'
conference:
  end_date: 2020-09-16
  location: Aachen
  name: Aachen Body Engineering Days 2020
  start_date: 2020-09-15
date_created: 2020-11-10T09:59:26Z
date_updated: 2022-01-06T06:54:26Z
department:
- _id: '157'
language:
- iso: eng
status: public
title: Concept Development for a Functional Integrated Lightweight Battery Housing
  with Special Consideration of the Joining Technology
type: conference
user_id: '44759'
year: '2020'
...
