---
_id: '30684'
abstract:
- lang: eng
text: Due to stricter emission targets in the mobility sector and the resulting
trend towards lightweight construction in order to reduce weight and consequently
emissions, multi-material systems that allow a material to be placed in the right
quantity and in the right place are becoming increasingly important. One major
challenge that is holding back the rapid and widespread use of multi-material
systems is the lack of adequate joining processes that are suitable for joining
dissimilar materials. Joining processes without auxiliary elements have the advantage
of a reduced assembly effort and no additional added weight. Conventional joining
processes without auxiliary elements, such as welding, clinching, or the use of
adhesives, reach their limits due to different mechanical properties and chemical
incompatibilities. A process with potential in the field of joining dissimilar
materials is joining without an auxiliary element using pin structures. However,
current pin manufacturing processes are mostly time-consuming or can only be integrated
barely into existing industrial manufacturing processes due to their specific
properties. For this reason, the present work investigates the production of single-
and multi-pin structures from high-strength dual-phase steel HCT590X + Z (DP600,
t0 = 1.5 mm) by cold extrusion directly out of the sheet metal. These structures
are subsequently joined with an aluminium sheet (EN AW-6014-T4, t0 = 1.5 mm) by
direct pin pressing. For a quantitative evaluation of the joint quality, tensile
shear tests are carried out and the influence of different pin heights, pin number,
and pin arrangements, as well as different joining strategies on the joint strength
is experimentally evaluated. It is proven that a single pin structure with a diameter
of 1.5 mm and an average height of 1.86 mm achieves a maximum tensile shear force
of 1025 N. The results reveal that the formation of a form-fit during direct pin
pressing is essential for the joint strength. By increasing the number of pins,
a linear increase in force could be demonstrated, which is independent of the
arrangement of the pin structures.
author:
- first_name: D.
full_name: Römisch, D.
last_name: Römisch
- first_name: M.
full_name: Kraus, M.
last_name: Kraus
- first_name: M.
full_name: Merklein, M.
last_name: Merklein
citation:
ama: Römisch D, Kraus M, Merklein M. Experimental study on joining by forming of
hct590x + z and en-aw 6014 sheets using cold extruded pin structures. Journal
of Manufacturing and Materials Processing. 2021;5:25. doi:10.3390/jmmp5010025
apa: Römisch, D., Kraus, M., & Merklein, M. (2021). Experimental study on joining
by forming of hct590x + z and en-aw 6014 sheets using cold extruded pin structures.
Journal of Manufacturing and Materials Processing, 5, 25. https://doi.org/10.3390/jmmp5010025
bibtex: '@article{Römisch_Kraus_Merklein_2021, title={Experimental study on joining
by forming of hct590x + z and en-aw 6014 sheets using cold extruded pin structures},
volume={5}, DOI={10.3390/jmmp5010025},
journal={Journal of Manufacturing and Materials Processing}, author={Römisch,
D. and Kraus, M. and Merklein, M.}, year={2021}, pages={25} }'
chicago: 'Römisch, D., M. Kraus, and M. Merklein. “Experimental Study on Joining
by Forming of Hct590x + z and En-Aw 6014 Sheets Using Cold Extruded Pin Structures.”
Journal of Manufacturing and Materials Processing 5 (2021): 25. https://doi.org/10.3390/jmmp5010025.'
ieee: 'D. Römisch, M. Kraus, and M. Merklein, “Experimental study on joining by
forming of hct590x + z and en-aw 6014 sheets using cold extruded pin structures,”
Journal of Manufacturing and Materials Processing, vol. 5, p. 25, 2021,
doi: 10.3390/jmmp5010025.'
mla: Römisch, D., et al. “Experimental Study on Joining by Forming of Hct590x +
z and En-Aw 6014 Sheets Using Cold Extruded Pin Structures.” Journal of Manufacturing
and Materials Processing, vol. 5, 2021, p. 25, doi:10.3390/jmmp5010025.
short: D. Römisch, M. Kraus, M. Merklein, Journal of Manufacturing and Materials
Processing 5 (2021) 25.
date_created: 2022-03-29T08:48:14Z
date_updated: 2023-01-02T11:47:27Z
department:
- _id: '630'
doi: 10.3390/jmmp5010025
intvolume: ' 5'
language:
- iso: eng
page: '25'
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285'
- _id: '133'
name: 'TRR 285 - C: TRR 285 - Project Area C'
- _id: '145'
name: 'TRR 285 – C01: TRR 285 - Subproject C01'
publication: Journal of Manufacturing and Materials Processing
status: public
title: Experimental study on joining by forming of hct590x + z and en-aw 6014 sheets
using cold extruded pin structures
type: journal_article
user_id: '14931'
volume: 5
year: '2021'
...
---
_id: '30682'
abstract:
- lang: eng
text: 'Lightweight constructions become more and more important, especially in the
mobility sector. In this industry, the increasingly strict regulations regarding
the emissions of carbon dioxide can be achieved to a certain extent by reducing
the vehicle weight. Thus, multi-material systems are used. Conventional joining
techniques reach their limits when joining different materials due to different
thermal expansion, unequal stiffness or chemical incompatibilities. This is why
additional joining elements or adhesives are used. These must be viewed critically
regarding a lightweight and resource-efficient production, since they add weight
or complicate the recycling process of these components. Consequently, there is
a great and growing need for new versatile joining technologies in order to overcome
these challenges and to be able to react to changing process parameters and boundary
conditions. Joining without an auxiliary element using pin structures formed directly
from the sheet metal plane is one approach to meet these challenges. These pin
structures are then joined by direct pressing into the joining partner. This is
possible with a variety of material combinations, but is advantageous with regard
to continuous fibre-reinforced thermoplastic composites (CFRTP), as the fibres
do not have to be cut when joining CFRTP using pin structures. In this paper,
the formability of pin structures made of a dual-phase steel DP600 (HCT590X +
Z) is investigated. The extruded pin structures are joined by direct pin pressing
with an EN AW-6014 to form tensile shear specimens. Different joining strategies
are investigated to compare their influence on the joint strength. The results
have shown that it is feasible to form suitable pins from a DP600 dual-phase steel
to produce reliable connections with an aluminium sheet joined by direct pin pressing. '
author:
- first_name: D.
full_name: Römisch, D.
last_name: Römisch
- first_name: M.
full_name: Kraus, M.
last_name: Kraus
- first_name: M.
full_name: Merklein, M.
last_name: Merklein
citation:
ama: Römisch D, Kraus M, Merklein M. Investigation of Different Joining by Forming
Strategies when Connecting Different Metals without Auxiliary Elements. Key
Engineering Materials. 2021;883:19-26. doi:10.4028/www.scientific.net/kem.883.19
apa: Römisch, D., Kraus, M., & Merklein, M. (2021). Investigation of Different
Joining by Forming Strategies when Connecting Different Metals without Auxiliary
Elements. Key Engineering Materials, 883, 19–26. https://doi.org/10.4028/www.scientific.net/kem.883.19
bibtex: '@article{Römisch_Kraus_Merklein_2021, title={Investigation of Different
Joining by Forming Strategies when Connecting Different Metals without Auxiliary
Elements}, volume={883}, DOI={10.4028/www.scientific.net/kem.883.19},
journal={Key Engineering Materials}, author={Römisch, D. and Kraus, M. and Merklein,
M.}, year={2021}, pages={19–26} }'
chicago: 'Römisch, D., M. Kraus, and M. Merklein. “Investigation of Different Joining
by Forming Strategies When Connecting Different Metals without Auxiliary Elements.”
Key Engineering Materials 883 (2021): 19–26. https://doi.org/10.4028/www.scientific.net/kem.883.19.'
ieee: 'D. Römisch, M. Kraus, and M. Merklein, “Investigation of Different Joining
by Forming Strategies when Connecting Different Metals without Auxiliary Elements,”
Key Engineering Materials, vol. 883, pp. 19–26, 2021, doi: 10.4028/www.scientific.net/kem.883.19.'
mla: Römisch, D., et al. “Investigation of Different Joining by Forming Strategies
When Connecting Different Metals without Auxiliary Elements.” Key Engineering
Materials, vol. 883, 2021, pp. 19–26, doi:10.4028/www.scientific.net/kem.883.19.
short: D. Römisch, M. Kraus, M. Merklein, Key Engineering Materials 883 (2021) 19–26.
date_created: 2022-03-29T08:45:16Z
date_updated: 2023-01-02T11:47:47Z
department:
- _id: '630'
doi: 10.4028/www.scientific.net/kem.883.19
intvolume: ' 883'
language:
- iso: eng
page: 19-26
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285'
- _id: '133'
name: 'TRR 285 - C: TRR 285 - Project Area C'
- _id: '145'
name: 'TRR 285 – C01: TRR 285 - Subproject C01'
publication: Key Engineering Materials
status: public
title: Investigation of Different Joining by Forming Strategies when Connecting Different
Metals without Auxiliary Elements
type: journal_article
user_id: '14931'
volume: 883
year: '2021'
...
---
_id: '30718'
abstract:
- lang: eng
text: The growing demands of resource-saving processes and products are leading
to increasing importance of lightweight construction for the automotive industry.
One approach is multi-material design, which uses high-strength steels and aluminium
alloys in the production of vehicle bodies. Therefore, reliable processes for
joining components with different mechanical properties and geometries are necessary.
As conventional joining processes reach their limits, new versatile processes
and methods are required which can adapt to different process conditions and disturbance
variables. A widely used joining process to join different materials is self-piercing
riveting as a joining by forming method, however it is characterised as inflexible
to changing process conditions due to a linear process kinematic and rigid dies.
An approach to extend the process limits is the application of a tumbling kinematic
for the punch. Thus, an adapted tumbling strategy can be used to influence the
joining process and to achieve a controlled material flow in order to manufacture
tailored joints. For the fundamental investigation of the process, numerical investigations
are necessary. In order to achieve high model quality a precise material modelling
is crucial. Therefore, a characterisation of the materials HCT590X+Z and EN AW-6014
as typical materials of multi-material mixes and the rivet material 38B2 is performed.
Due to the different stress conditions during tumbling self-piercing riveting
suitable characterisation methods are selected and carried out.
author:
- first_name: S.
full_name: Wituschek, S.
last_name: Wituschek
- first_name: M.
full_name: Lechner, M.
last_name: Lechner
citation:
ama: Wituschek S, Lechner M. Material characterisation methods for a tumbling self-piercing
riveting process. ESAFORM 2021. Published online 2021. doi:10.25518/esaform21.398
apa: Wituschek, S., & Lechner, M. (2021). Material characterisation methods
for a tumbling self-piercing riveting process. ESAFORM 2021. https://doi.org/10.25518/esaform21.398
bibtex: '@article{Wituschek_Lechner_2021, title={Material characterisation methods
for a tumbling self-piercing riveting process}, DOI={10.25518/esaform21.398},
journal={ESAFORM 2021}, author={Wituschek, S. and Lechner, M.}, year={2021} }'
chicago: Wituschek, S., and M. Lechner. “Material Characterisation Methods for a
Tumbling Self-Piercing Riveting Process.” ESAFORM 2021, 2021. https://doi.org/10.25518/esaform21.398.
ieee: 'S. Wituschek and M. Lechner, “Material characterisation methods for a tumbling
self-piercing riveting process,” ESAFORM 2021, 2021, doi: 10.25518/esaform21.398.'
mla: Wituschek, S., and M. Lechner. “Material Characterisation Methods for a Tumbling
Self-Piercing Riveting Process.” ESAFORM 2021, 2021, doi:10.25518/esaform21.398.
short: S. Wituschek, M. Lechner, ESAFORM 2021 (2021).
date_created: 2022-03-29T10:34:25Z
date_updated: 2023-01-02T11:47:03Z
department:
- _id: '630'
doi: 10.25518/esaform21.398
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: '146'
name: 'TRR 285 – C02: TRR 285 - Subproject C02'
publication: ESAFORM 2021
status: public
title: Material characterisation methods for a tumbling self-piercing riveting process
type: journal_article
user_id: '14931'
year: '2021'
...
---
_id: '30683'
abstract:
- lang: eng
text: '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. '
author:
- first_name: D.
full_name: Köhler, D.
last_name: Köhler
- first_name: B.
full_name: Sadeghian, B.
last_name: Sadeghian
- first_name: R.
full_name: Kupfer, R.
last_name: Kupfer
- first_name: J.
full_name: Troschitz, J.
last_name: Troschitz
- 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, 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. Key Engineering Materials. 2021;883:89-96.
doi:10.4028/www.scientific.net/kem.883.89
apa: Köhler, D., Sadeghian, B., Kupfer, R., Troschitz, J., Gude, M., & Brosius,
A. (2021). A Method for Characterization of Geometric Deviations in Clinch Points
with Computed Tomography and Transient Dynamic Analysis. Key Engineering Materials,
883, 89–96. https://doi.org/10.4028/www.scientific.net/kem.883.89
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={10.4028/www.scientific.net/kem.883.89},
journal={Key Engineering Materials}, author={Köhler, D. and Sadeghian, B. and
Kupfer, R. and Troschitz, J. and Gude, M. and Brosius, A.}, year={2021}, pages={89–96}
}'
chicago: 'Köhler, D., 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.” Key Engineering Materials 883
(2021): 89–96. https://doi.org/10.4028/www.scientific.net/kem.883.89.'
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,” Key Engineering Materials,
vol. 883, pp. 89–96, 2021, doi: 10.4028/www.scientific.net/kem.883.89.'
mla: Köhler, D., et al. “A Method for Characterization of Geometric Deviations in
Clinch Points with Computed Tomography and Transient Dynamic Analysis.” Key
Engineering Materials, vol. 883, 2021, pp. 89–96, doi:10.4028/www.scientific.net/kem.883.89.
short: D. Köhler, B. Sadeghian, R. Kupfer, J. Troschitz, M. Gude, A. Brosius, Key
Engineering Materials 883 (2021) 89–96.
date_created: 2022-03-29T08:46:40Z
date_updated: 2023-01-02T11:48:16Z
department:
- _id: '630'
doi: 10.4028/www.scientific.net/kem.883.89
intvolume: ' 883'
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
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: '14931'
volume: 883
year: '2021'
...
---
_id: '30663'
abstract:
- lang: eng
text: 'The use of clinch joints, e.g. vehicle structures, is determined by the reliability
of the joint and its strength properties - in particular the fatigue strength.
Clinch connections offer the advantage over form-closure and force-closure processes
that they can also be used for hybrid material combinations. In order to be able
to evaluate the influence of the geometry parameters such as e.g. undercut, neck
thickness or also base thickness on the fatigue behavior, three clinch connections
(in optimum and compromise design) with different tool parameters were designed
and examined using the example of a joining task with aluminum sheet material.
For this purpose, fatigue curves (F-N curves) in the range of high to very high
numbers of load cycles (N = 105 to 107) were determined. In this load cycle range,
a so-called "neck fracture" is mainly to be expected as the type of failure, whereas
for quasi-static tests, a “buckling” is more likely to occur. The tests were carried
out on single-cut overlapping shear tensile specimens. Metallographic and scanning
electron microscopic examinations of the joints and the fracture surfaces served
to identify the crack initiation site and to clarify the respective type of failure.
Significant differences in the damage behaviour of the three clinching variants
could be shown. This observation enables one step into the direction of fully
understanding the relationship along the causal chain "joint requirements - joining
process - fatigue strength". Thus the adaptability of the clinching process can
be improved. '
author:
- first_name: L.
full_name: Ewenz, L.
last_name: Ewenz
- first_name: J.
full_name: Kalich, J.
last_name: Kalich
- first_name: M.
full_name: Zimmermann, M.
last_name: Zimmermann
- first_name: U.
full_name: Füssel, U.
last_name: Füssel
citation:
ama: Ewenz L, Kalich J, Zimmermann M, Füssel U. Effect of Different Tool Geometries
on the Mechanical Properties of Al-Al Clinch Joints. Key Engineering Materials.
2021;883:65-72. doi:10.4028/www.scientific.net/kem.883.65
apa: Ewenz, L., Kalich, J., Zimmermann, M., & Füssel, U. (2021). Effect of Different
Tool Geometries on the Mechanical Properties of Al-Al Clinch Joints. Key Engineering
Materials, 883, 65–72. https://doi.org/10.4028/www.scientific.net/kem.883.65
bibtex: '@article{Ewenz_Kalich_Zimmermann_Füssel_2021, title={Effect of Different
Tool Geometries on the Mechanical Properties of Al-Al Clinch Joints}, volume={883},
DOI={10.4028/www.scientific.net/kem.883.65},
journal={Key Engineering Materials}, author={Ewenz, L. and Kalich, J. and Zimmermann,
M. and Füssel, U.}, year={2021}, pages={65–72} }'
chicago: 'Ewenz, L., J. Kalich, M. Zimmermann, and U. Füssel. “Effect of Different
Tool Geometries on the Mechanical Properties of Al-Al Clinch Joints.” Key Engineering
Materials 883 (2021): 65–72. https://doi.org/10.4028/www.scientific.net/kem.883.65.'
ieee: 'L. Ewenz, J. Kalich, M. Zimmermann, and U. Füssel, “Effect of Different Tool
Geometries on the Mechanical Properties of Al-Al Clinch Joints,” Key Engineering
Materials, vol. 883, pp. 65–72, 2021, doi: 10.4028/www.scientific.net/kem.883.65.'
mla: Ewenz, L., et al. “Effect of Different Tool Geometries on the Mechanical Properties
of Al-Al Clinch Joints.” Key Engineering Materials, vol. 883, 2021, pp.
65–72, doi:10.4028/www.scientific.net/kem.883.65.
short: L. Ewenz, J. Kalich, M. Zimmermann, U. Füssel, Key Engineering Materials
883 (2021) 65–72.
date_created: 2022-03-28T14:00:19Z
date_updated: 2023-01-02T11:49:08Z
department:
- _id: '630'
doi: 10.4028/www.scientific.net/kem.883.65
intvolume: ' 883'
language:
- iso: eng
page: 65-72
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285'
- _id: '132'
name: 'TRR 285 - B: TRR 285 - Project Area B'
- _id: '141'
name: 'TRR 285 – B02: TRR 285 - Subproject B02'
- _id: '138'
name: 'TRR 285 – A04: TRR 285 - Subproject A04'
- _id: '131'
name: 'TRR 285 - A: TRR 285 - Project Area A'
publication: Key Engineering Materials
status: public
title: Effect of Different Tool Geometries on the Mechanical Properties of Al-Al Clinch
Joints
type: journal_article
user_id: '14931'
volume: 883
year: '2021'
...
---
_id: '30688'
abstract:
- lang: eng
text: 'Thermally supported clinching (Hotclinch) is a novel promising process to
join dissimilar materials. Here, metal and fibre-reinforced thermoplastics (FRTP)
are used within this single step joining process and without the usage of auxiliary
parts like screws or rivets. For this purpose, heat is applied to improve the
formability of the reinforced thermoplastic. This enables joining of the materials
using conventional clinching-tools. Focus of this work is the modelling on mesoscopic
scale for the numerical simulation of this process. The FTRP-model takes the material
behaviour both of matrix and the fabric reinforced organo-sheet under process
temperatures into account. For describing the experimentally observed phenomena
such as large deformations, fibre failure and the interactions between matrix
and fibres as well as between fibres themselves, the usage of conventional, purely
Lagrangian based FEM methods is limited. Therefore, the combination of contact-models
with advanced modelling approaches like Arbitrary-Lagrangian-Eulerian (ALE), Coupled-Eulerian-Lagrangian
(CEL) and Smooth-ParticleHydrodynamics (SPH) for the numerical simulation of the
clinching process are employed. The different approaches are compared with regard
to simulation feasibility, robustness and results accuracy. It is shown, that
the CEL approach represents the most promising approach to describe the clinching
process. '
author:
- first_name: B.
full_name: Gröger, B.
last_name: Gröger
- first_name: A.
full_name: Hornig, A.
last_name: Hornig
- first_name: A.
full_name: Hoog, A.
last_name: Hoog
- first_name: M.
full_name: Gude, M.
last_name: Gude
citation:
ama: 'Gröger B, Hornig A, Hoog A, Gude M. Modelling of thermally supported clinching
of fibre-reinforced thermoplastics: Approaches on mesoscale considering large
deformations and fibre failure. ESAFORM 2021 - 24th International Conference
on Material Forming. Published online 2021. doi:10.25518/esaform21.4293'
apa: 'Gröger, B., Hornig, A., Hoog, A., & Gude, M. (2021). Modelling of thermally
supported clinching of fibre-reinforced thermoplastics: Approaches on mesoscale
considering large deformations and fibre failure. ESAFORM 2021 - 24th International
Conference on Material Forming. https://doi.org/10.25518/esaform21.4293'
bibtex: '@article{Gröger_Hornig_Hoog_Gude_2021, title={Modelling of thermally supported
clinching of fibre-reinforced thermoplastics: Approaches on mesoscale considering
large deformations and fibre failure}, DOI={10.25518/esaform21.4293},
journal={ESAFORM 2021 - 24th International Conference on Material Forming}, author={Gröger,
B. and Hornig, A. and Hoog, A. and Gude, M.}, year={2021} }'
chicago: 'Gröger, B., A. Hornig, A. Hoog, and M. Gude. “Modelling of Thermally Supported
Clinching of Fibre-Reinforced Thermoplastics: Approaches on Mesoscale Considering
Large Deformations and Fibre Failure.” ESAFORM 2021 - 24th International Conference
on Material Forming, 2021. https://doi.org/10.25518/esaform21.4293.'
ieee: 'B. Gröger, A. Hornig, A. Hoog, and M. Gude, “Modelling of thermally supported
clinching of fibre-reinforced thermoplastics: Approaches on mesoscale considering
large deformations and fibre failure,” ESAFORM 2021 - 24th International Conference
on Material Forming, 2021, doi: 10.25518/esaform21.4293.'
mla: 'Gröger, B., et al. “Modelling of Thermally Supported Clinching of Fibre-Reinforced
Thermoplastics: Approaches on Mesoscale Considering Large Deformations and Fibre
Failure.” ESAFORM 2021 - 24th International Conference on Material Forming,
2021, doi:10.25518/esaform21.4293.'
short: B. Gröger, A. Hornig, A. Hoog, M. Gude, ESAFORM 2021 - 24th International
Conference on Material Forming (2021).
date_created: 2022-03-29T08:52:57Z
date_updated: 2023-01-02T11:50:35Z
department:
- _id: '630'
doi: 10.25518/esaform21.4293
language:
- iso: eng
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285'
- _id: '131'
name: 'TRR 285 - A: TRR 285 - Project Area A'
- _id: '137'
name: 'TRR 285 – A03: TRR 285 - Subproject A03'
publication: ESAFORM 2021 - 24th International Conference on Material Forming
status: public
title: 'Modelling of thermally supported clinching of fibre-reinforced thermoplastics:
Approaches on mesoscale considering large deformations and fibre failure'
type: journal_article
user_id: '14931'
year: '2021'
...
---
_id: '30685'
abstract:
- lang: eng
text: Joints are an essential part of modern (lightweight) structures in a broad
variety of applications. The reason for this is the rapidly increasing number
of different material combinations needing to be joined in application areas like
the automotive industry. It is currently common to use numerous auxiliary or standardized
elements instead of individually adapted joining elements. This leads to a large
number of different joining elements per product and thus to high costs. An innovative
approach to overcoming this issue is the design, manufacture and setting of joint-specific
joining elements. A good candidate for the manufacture of adapted joining elements
of this type is the so-called friction spinning process. The joining elements
formed in this way can be specifically adapted to the application in question
in terms of both shape and mechanical properties. The part geometry required for
the properties of a given joint is formed using a universal forming tool. This
makes it possible to form a wide variety of sub geometries for the auxiliary joining
part as a function of the prevailing joint condition, using a single forming tool
and starting from the same semi-finished bar material. By applying different process
strategies for the rotational speed and feed rate during the forming operation,
the same part geometry can even be given different local mechanical properties.
The following contribution presents the results of ongoing research work and includes
the process concept, process properties, tooling and the results of experimental
investigations into the joining of two sheet metal parts with help of this new
joining process.
author:
- first_name: E.
full_name: Wiens, E.
last_name: Wiens
- first_name: C.
full_name: Wischer, C.
last_name: Wischer
- first_name: W.
full_name: Homberg, W.
last_name: Homberg
citation:
ama: Wiens E, Wischer C, Homberg W. Development of a novel adaptive joining technology
employing friction-spun joint connectors (FSJC). ESAFORM. Published online
2021:4682. doi:10.25518/esaform21.4682
apa: Wiens, E., Wischer, C., & Homberg, W. (2021). Development of a novel adaptive
joining technology employing friction-spun joint connectors (FSJC). ESAFORM,
4682. https://doi.org/10.25518/esaform21.4682
bibtex: '@article{Wiens_Wischer_Homberg_2021, title={Development of a novel adaptive
joining technology employing friction-spun joint connectors (FSJC)}, DOI={10.25518/esaform21.4682},
journal={ESAFORM}, author={Wiens, E. and Wischer, C. and Homberg, W.}, year={2021},
pages={4682} }'
chicago: Wiens, E., C. Wischer, and W. Homberg. “Development of a Novel Adaptive
Joining Technology Employing Friction-Spun Joint Connectors (FSJC).” ESAFORM,
2021, 4682. https://doi.org/10.25518/esaform21.4682.
ieee: 'E. Wiens, C. Wischer, and W. Homberg, “Development of a novel adaptive joining
technology employing friction-spun joint connectors (FSJC),” ESAFORM, p.
4682, 2021, doi: 10.25518/esaform21.4682.'
mla: Wiens, E., et al. “Development of a Novel Adaptive Joining Technology Employing
Friction-Spun Joint Connectors (FSJC).” ESAFORM, 2021, p. 4682, doi:10.25518/esaform21.4682.
short: E. Wiens, C. Wischer, W. Homberg, ESAFORM (2021) 4682.
date_created: 2022-03-29T08:49:33Z
date_updated: 2023-01-02T11:49:31Z
department:
- _id: '630'
doi: 10.25518/esaform21.4682
language:
- iso: eng
page: '4682'
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285'
- _id: '133'
name: 'TRR 285 - C: TRR 285 - Project Area C'
- _id: '147'
name: 'TRR 285 – C03: TRR 285 - Subproject C03'
publication: ESAFORM
status: public
title: Development of a novel adaptive joining technology employing friction-spun
joint connectors (FSJC)
type: journal_article
user_id: '14931'
year: '2021'
...
---
_id: '30664'
abstract:
- lang: eng
text: 'Corrosion is a major cause for the failure of metallic components in various
branches of the industry. Depending on the corrosion severity, the time until
failure of the component varies. On the contrary, a study has shown that certain
riveted metal joints, exposed to a short period of mechanical loading and corrosion,
have greater fatigue limits. This study gives rise to the question how different
corrosion exposure times affect joint metallic components. In the present research,
a theoretical approach is developed in order to evaluate the influence of galvanic
corrosion on joint integrity of clinched metal joints. At first, the framework
for modeling galvanic corrosion is introduced. Furthermore, a simulative investigation
of a clinching point is carried out based on the assumption that corrosion leads
to a reduction of the contact area which leads to a local increase in contact
pressure. For this purpose, the stiffness values of individual elements in a finite
element model are reduced locally in the contact area of the undercut and the
contact stress along a path is evaluated. Summarizing, a modeling approach is
introduced to investigate corrosion effects on load-bearing behavior of clinched
joints. '
author:
- first_name: S.
full_name: Harzheim, S.
last_name: Harzheim
- first_name: C.
full_name: Steinfelder, C.
last_name: Steinfelder
- first_name: T.
full_name: Wallmersperger, T.
last_name: Wallmersperger
- first_name: A.
full_name: Brosius, A.
last_name: Brosius
citation:
ama: Harzheim S, Steinfelder C, Wallmersperger T, Brosius A. A First Approach for
the Treatment of Galvanic Corrosion and of Load-Bearing Capacity of Clinched Joints.
Key Engineering Materials. 2021;883:97-104. doi:10.4028/www.scientific.net/kem.883.97
apa: Harzheim, S., Steinfelder, C., Wallmersperger, T., & Brosius, A. (2021).
A First Approach for the Treatment of Galvanic Corrosion and of Load-Bearing Capacity
of Clinched Joints. Key Engineering Materials, 883, 97–104. https://doi.org/10.4028/www.scientific.net/kem.883.97
bibtex: '@article{Harzheim_Steinfelder_Wallmersperger_Brosius_2021, title={A First
Approach for the Treatment of Galvanic Corrosion and of Load-Bearing Capacity
of Clinched Joints}, volume={883}, DOI={10.4028/www.scientific.net/kem.883.97},
journal={Key Engineering Materials}, author={Harzheim, S. and Steinfelder, C.
and Wallmersperger, T. and Brosius, A.}, year={2021}, pages={97–104} }'
chicago: 'Harzheim, S., C. Steinfelder, T. Wallmersperger, and A. Brosius. “A First
Approach for the Treatment of Galvanic Corrosion and of Load-Bearing Capacity
of Clinched Joints.” Key Engineering Materials 883 (2021): 97–104. https://doi.org/10.4028/www.scientific.net/kem.883.97.'
ieee: 'S. Harzheim, C. Steinfelder, T. Wallmersperger, and A. Brosius, “A First
Approach for the Treatment of Galvanic Corrosion and of Load-Bearing Capacity
of Clinched Joints,” Key Engineering Materials, vol. 883, pp. 97–104, 2021,
doi: 10.4028/www.scientific.net/kem.883.97.'
mla: Harzheim, S., et al. “A First Approach for the Treatment of Galvanic Corrosion
and of Load-Bearing Capacity of Clinched Joints.” Key Engineering Materials,
vol. 883, 2021, pp. 97–104, doi:10.4028/www.scientific.net/kem.883.97.
short: S. Harzheim, C. Steinfelder, T. Wallmersperger, A. Brosius, Key Engineering
Materials 883 (2021) 97–104.
date_created: 2022-03-28T14:04:56Z
date_updated: 2023-01-02T11:49:52Z
department:
- _id: '630'
doi: 10.4028/www.scientific.net/kem.883.97
intvolume: ' 883'
language:
- iso: eng
page: 97-104
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285'
- _id: '132'
name: 'TRR 285 - B: TRR 285 - Project Area B'
- _id: '142'
name: 'TRR 285 – B03: TRR 285 - Subproject B03'
- _id: '140'
name: 'TRR 285 – B01: TRR 285 - Subproject B01'
publication: Key Engineering Materials
status: public
title: A First Approach for the Treatment of Galvanic Corrosion and of Load-Bearing
Capacity of Clinched Joints
type: journal_article
user_id: '14931'
volume: 883
year: '2021'
...
---
_id: '30694'
abstract:
- lang: eng
text: In recent years, clinching has gathered popularity to join sheets of different
materials in industrial applications. The manufacturing process has some advantages,
as reduced joining time, reduced costs, and the joints show good fatigue properties.
To ensure the joint strength, reliable simulations of the material behaviour accounting
for process-induced damage are expected to be beneficial to obtain credible values
for the ultimate joint strength and its fatigue limit. A finite plasticity gradient-damage
material model is outlined to describe the plastic and damage evolutions during
the forming of sheet metals, later applied to clinching. The utilised gradient-enhancement
cures the damage-induced localisation by introducing a global damage variable
as an additional finite element field. Both, plasticity and damage are strongly
coupled, but can, due to a dual-surface approach, evolve independently. The ability
of the material model to predict damage in strongly deformed sheets, its flexibility
and its regularization properties are illustrated by numerical examples.
author:
- first_name: J.
full_name: Friedlein, J.
last_name: Friedlein
- first_name: J.
full_name: Mergheim, J.
last_name: Mergheim
- first_name: P.
full_name: Steinmann, P.
last_name: Steinmann
citation:
ama: Friedlein J, Mergheim J, Steinmann P. A finite plasticity gradient-damage model
for sheet metals during forming and clinching. Key Engineering Materials.
2021;883 KEM:57. doi:10.4028/www.scientific.net/KEM.883.57
apa: Friedlein, J., Mergheim, J., & Steinmann, P. (2021). A finite plasticity
gradient-damage model for sheet metals during forming and clinching. Key Engineering
Materials, 883 KEM, 57. https://doi.org/10.4028/www.scientific.net/KEM.883.57
bibtex: '@article{Friedlein_Mergheim_Steinmann_2021, title={A finite plasticity
gradient-damage model for sheet metals during forming and clinching}, volume={883
KEM}, DOI={10.4028/www.scientific.net/KEM.883.57},
journal={Key Engineering Materials}, author={Friedlein, J. and Mergheim, J. and
Steinmann, P.}, year={2021}, pages={57} }'
chicago: 'Friedlein, J., J. Mergheim, and P. Steinmann. “A Finite Plasticity Gradient-Damage
Model for Sheet Metals during Forming and Clinching.” Key Engineering Materials
883 KEM (2021): 57. https://doi.org/10.4028/www.scientific.net/KEM.883.57.'
ieee: 'J. Friedlein, J. Mergheim, and P. Steinmann, “A finite plasticity gradient-damage
model for sheet metals during forming and clinching,” Key Engineering Materials,
vol. 883 KEM, p. 57, 2021, doi: 10.4028/www.scientific.net/KEM.883.57.'
mla: Friedlein, J., et al. “A Finite Plasticity Gradient-Damage Model for Sheet
Metals during Forming and Clinching.” Key Engineering Materials, vol. 883
KEM, 2021, p. 57, doi:10.4028/www.scientific.net/KEM.883.57.
short: J. Friedlein, J. Mergheim, P. Steinmann, Key Engineering Materials 883 KEM
(2021) 57.
date_created: 2022-03-29T09:08:21Z
date_updated: 2023-01-02T11:50:57Z
department:
- _id: '630'
doi: 10.4028/www.scientific.net/KEM.883.57
language:
- iso: eng
page: '57'
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285'
- _id: '131'
name: 'TRR 285 - A: TRR 285 - Project Area A'
- _id: '139'
name: 'TRR 285 – A05: TRR 285 - Subproject A05'
publication: Key Engineering Materials
status: public
title: A finite plasticity gradient-damage model for sheet metals during forming and
clinching
type: journal_article
user_id: '14931'
volume: 883 KEM
year: '2021'
...
---
_id: '30689'
abstract:
- lang: eng
text: 'Joining and local forming processes for fibre-reinforced thermoplastics (FRTP)
like hole-forming or variations of the clinching process require an in-depth understanding
of the process induced effects on meso-scale. For numerical modelling with a geometrical
description of a woven fabric, adequate material models for a representative unit
cell are identified. Model calibration is achieved employing a mesoscopic finite-element-approach
using the embedded element method based on tensile tests of the consolidated organo-sheets
and a phenomenological evaluation of photomicrographs. The model takes temperature
dependent stiffness and fibre tension failure into account. '
author:
- first_name: B.
full_name: Gröger, B.
last_name: Gröger
- first_name: A.
full_name: Hornig, A.
last_name: Hornig
- first_name: A.
full_name: Hoog, A.
last_name: Hoog
- first_name: M.
full_name: Gude, M.
last_name: Gude
citation:
ama: Gröger B, Hornig A, Hoog A, Gude M. Temperature dependent modelling of fibre-reinforced
thermoplastic organo-sheet material for forming and joining process simulations.
Key Engineering Materials. 2021;883 KEM:49. doi:10.4028/www.scientific.net/KEM.883.49
apa: Gröger, B., Hornig, A., Hoog, A., & Gude, M. (2021). Temperature dependent
modelling of fibre-reinforced thermoplastic organo-sheet material for forming
and joining process simulations. Key Engineering Materials, 883 KEM,
49. https://doi.org/10.4028/www.scientific.net/KEM.883.49
bibtex: '@article{Gröger_Hornig_Hoog_Gude_2021, title={Temperature dependent modelling
of fibre-reinforced thermoplastic organo-sheet material for forming and joining
process simulations}, volume={883 KEM}, DOI={10.4028/www.scientific.net/KEM.883.49},
journal={Key Engineering Materials}, author={Gröger, B. and Hornig, A. and Hoog,
A. and Gude, M.}, year={2021}, pages={49} }'
chicago: 'Gröger, B., A. Hornig, A. Hoog, and M. Gude. “Temperature Dependent Modelling
of Fibre-Reinforced Thermoplastic Organo-Sheet Material for Forming and Joining
Process Simulations.” Key Engineering Materials 883 KEM (2021): 49. https://doi.org/10.4028/www.scientific.net/KEM.883.49.'
ieee: 'B. Gröger, A. Hornig, A. Hoog, and M. Gude, “Temperature dependent modelling
of fibre-reinforced thermoplastic organo-sheet material for forming and joining
process simulations,” Key Engineering Materials, vol. 883 KEM, p. 49, 2021,
doi: 10.4028/www.scientific.net/KEM.883.49.'
mla: Gröger, B., et al. “Temperature Dependent Modelling of Fibre-Reinforced Thermoplastic
Organo-Sheet Material for Forming and Joining Process Simulations.” Key Engineering
Materials, vol. 883 KEM, 2021, p. 49, doi:10.4028/www.scientific.net/KEM.883.49.
short: B. Gröger, A. Hornig, A. Hoog, M. Gude, Key Engineering Materials 883 KEM
(2021) 49.
date_created: 2022-03-29T08:54:24Z
date_updated: 2023-01-02T11:51:23Z
department:
- _id: '630'
doi: 10.4028/www.scientific.net/KEM.883.49
language:
- iso: eng
page: '49'
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285'
- _id: '131'
name: 'TRR 285 - A: TRR 285 - Project Area A'
- _id: '137'
name: 'TRR 285 – A03: TRR 285 - Subproject A03'
publication: Key Engineering Materials
status: public
title: Temperature dependent modelling of fibre-reinforced thermoplastic organo-sheet
material for forming and joining process simulations
type: journal_article
user_id: '14931'
volume: 883 KEM
year: '2021'
...
---
_id: '30720'
abstract:
- lang: eng
text: Predicting the durability of components under mechanical loading combined
with environmental conditions leading to corrosion is one of the most challenging
tasks in mechanical engineering. Precise predictions are neccesary for lightweight
design in transportation due to environmental protection. During corrosion often
hydrogen is produced by electrochemical reactions. Hydrogen embrittlement is one
of the most feared damage mechanisms for metal constructions leading to early
and unexpected failure. Until now predictions are mostly done through costly experiments.
In the present research, a first simple simulation model based on the fundamentals
of electrochemistry and continuum damage mechanics is developed to couple the
damage induced by the mechanical stress with the hydrogen embrittlement. Results
of the durability are presented for the case of uniaxial cyclic loading for varying
testing frequency.
author:
- first_name: M.
full_name: Hofmann, M.
last_name: Hofmann
- first_name: Y.
full_name: Shi, Y.
last_name: Shi
- first_name: T.
full_name: Wallmersperger, T.
last_name: Wallmersperger
citation:
ama: Hofmann M, Shi Y, Wallmersperger T. A first Model of Fatigue Corrosion of a
Metal through Hydrogen Embrittlement. PAMM. 2021;20. doi:10.1002/pamm.202000122
apa: Hofmann, M., Shi, Y., & Wallmersperger, T. (2021). A first Model of Fatigue
Corrosion of a Metal through Hydrogen Embrittlement. PAMM, 20. https://doi.org/10.1002/pamm.202000122
bibtex: '@article{Hofmann_Shi_Wallmersperger_2021, title={A first Model of Fatigue
Corrosion of a Metal through Hydrogen Embrittlement}, volume={20}, DOI={10.1002/pamm.202000122},
journal={PAMM}, author={Hofmann, M. and Shi, Y. and Wallmersperger, T.}, year={2021}
}'
chicago: Hofmann, M., Y. Shi, and T. Wallmersperger. “A First Model of Fatigue Corrosion
of a Metal through Hydrogen Embrittlement.” PAMM 20 (2021). https://doi.org/10.1002/pamm.202000122.
ieee: 'M. Hofmann, Y. Shi, and T. Wallmersperger, “A first Model of Fatigue Corrosion
of a Metal through Hydrogen Embrittlement,” PAMM, vol. 20, 2021, doi: 10.1002/pamm.202000122.'
mla: Hofmann, M., et al. “A First Model of Fatigue Corrosion of a Metal through
Hydrogen Embrittlement.” PAMM, vol. 20, 2021, doi:10.1002/pamm.202000122.
short: M. Hofmann, Y. Shi, T. Wallmersperger, PAMM 20 (2021).
date_created: 2022-03-29T10:36:29Z
date_updated: 2023-01-02T11:50:14Z
department:
- _id: '630'
doi: 10.1002/pamm.202000122
intvolume: ' 20'
language:
- iso: eng
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285'
- _id: '132'
name: 'TRR 285 - B: TRR 285 - Project Area B'
- _id: '142'
name: 'TRR 285 – B03: TRR 285 - Subproject B03'
publication: PAMM
status: public
title: A first Model of Fatigue Corrosion of a Metal through Hydrogen Embrittlement
type: journal_article
user_id: '14931'
volume: 20
year: '2021'
...
---
_id: '30695'
abstract:
- lang: eng
text: 'Due to their cost-efficiency and environmental friendliness, the demand of
mechanical joining processes is constantly rising. However, the dimensioning and
design of joints and suitable processes are mainly based on expert knowledge and
few experimental data. Therefore, the performance of numerical and experimental
studies enables the generation of optimized joining geometries. However, the manual
evaluation of the results of such studies is often highly time-consuming. As a
novel solution, image segmentation and machine learning algorithm provide methods
to automate the analysis process. Motivated by this, the paper presents an approach
for the automated analysis of geometrical characteristics using clinching as an
example. '
author:
- first_name: C.
full_name: Zirngibl, C.
last_name: Zirngibl
- first_name: B.
full_name: Schleich, B.
last_name: Schleich
citation:
ama: Zirngibl C, Schleich B. Approach for the automated analysis of geometrical
clinch joint characteristics. Key Engineering Materials. 2021;883 KEM:105.
doi:10.4028/www.scientific.net/KEM.883.105
apa: Zirngibl, C., & Schleich, B. (2021). Approach for the automated analysis
of geometrical clinch joint characteristics. Key Engineering Materials,
883 KEM, 105. https://doi.org/10.4028/www.scientific.net/KEM.883.105
bibtex: '@article{Zirngibl_Schleich_2021, title={Approach for the automated analysis
of geometrical clinch joint characteristics}, volume={883 KEM}, DOI={10.4028/www.scientific.net/KEM.883.105},
journal={Key Engineering Materials}, author={Zirngibl, C. and Schleich, B.}, year={2021},
pages={105} }'
chicago: 'Zirngibl, C., and B. Schleich. “Approach for the Automated Analysis of
Geometrical Clinch Joint Characteristics.” Key Engineering Materials 883
KEM (2021): 105. https://doi.org/10.4028/www.scientific.net/KEM.883.105.'
ieee: 'C. Zirngibl and B. Schleich, “Approach for the automated analysis of geometrical
clinch joint characteristics,” Key Engineering Materials, vol. 883 KEM,
p. 105, 2021, doi: 10.4028/www.scientific.net/KEM.883.105.'
mla: Zirngibl, C., and B. Schleich. “Approach for the Automated Analysis of Geometrical
Clinch Joint Characteristics.” Key Engineering Materials, vol. 883 KEM,
2021, p. 105, doi:10.4028/www.scientific.net/KEM.883.105.
short: C. Zirngibl, B. Schleich, Key Engineering Materials 883 KEM (2021) 105.
date_created: 2022-03-29T09:09:51Z
date_updated: 2023-01-02T11:51:41Z
department:
- _id: '630'
doi: 10.4028/www.scientific.net/KEM.883.105
language:
- iso: eng
page: '105'
project:
- _id: '144'
name: 'TRR 285 – B05: TRR 285 - Subproject B05'
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285'
- _id: '132'
name: 'TRR 285 - B: TRR 285 - Project Area B'
publication: Key Engineering Materials
status: public
title: Approach for the automated analysis of geometrical clinch joint characteristics
type: journal_article
user_id: '14931'
volume: 883 KEM
year: '2021'
...
---
_id: '34208'
abstract:
- lang: eng
text: Computational homogenization is a powerful tool which allows to obtain homogenized
properties of materials on the macroscale from the simulation of the underlying
microstructure. The response of the microstructure is, however, strongly affected
by variations in the microstructure geometry. The effect of geometry variations
is even stronger in cases when the material exhibits plastic deformations. In
this work we study a model of a steel alloy with arbitrary distributed elliptic
voids. We model one single unit cell of the material containing one single void.
The geometry of the void is not precisely known and is modeled as a variable orientation
of an ellipse. Large deformations applied to the unit cell necessitate a finite
elasto-plastic material model. Since the geometry variation is parameterized,
we can utilize the method recently developed for stochastic problems but also
applicable to all types of parametric problems — the isoparametric stochastic
local FEM (SL-FEM). It is an ideal tool for problems with only a few parameters
but strongly nonlinear dependency of the displacement fields on parameters. Simulations
demonstrate a strong effect of parameter variation on the plastic strains and,
thus, substantiate the use of the parametric computational homogenization approach.
author:
- first_name: Dmytro
full_name: Pivovarov, Dmytro
last_name: Pivovarov
- first_name: Julia
full_name: Mergheim, Julia
last_name: Mergheim
- first_name: Kai
full_name: Willner, Kai
last_name: Willner
- first_name: Paul
full_name: Steinmann, Paul
last_name: Steinmann
citation:
ama: 'Pivovarov D, Mergheim J, Willner K, Steinmann P. Parametric FEM for computational
homogenization of heterogeneous materials with random voids. In: PAMM.
Vol 20. Wiley; 2021. doi:10.1002/pamm.202000071'
apa: Pivovarov, D., Mergheim, J., Willner, K., & Steinmann, P. (2021). Parametric
FEM for computational homogenization of heterogeneous materials with random voids.
PAMM, 20(1). https://doi.org/10.1002/pamm.202000071
bibtex: '@inproceedings{Pivovarov_Mergheim_Willner_Steinmann_2021, title={Parametric
FEM for computational homogenization of heterogeneous materials with random voids},
volume={20}, DOI={10.1002/pamm.202000071},
number={1}, booktitle={PAMM}, publisher={Wiley}, author={Pivovarov, Dmytro and
Mergheim, Julia and Willner, Kai and Steinmann, Paul}, year={2021} }'
chicago: Pivovarov, Dmytro, Julia Mergheim, Kai Willner, and Paul Steinmann. “Parametric
FEM for Computational Homogenization of Heterogeneous Materials with Random Voids.”
In PAMM, Vol. 20. Wiley, 2021. https://doi.org/10.1002/pamm.202000071.
ieee: 'D. Pivovarov, J. Mergheim, K. Willner, and P. Steinmann, “Parametric FEM
for computational homogenization of heterogeneous materials with random voids,”
in PAMM, 2021, vol. 20, no. 1, doi: 10.1002/pamm.202000071.'
mla: Pivovarov, Dmytro, et al. “Parametric FEM for Computational Homogenization
of Heterogeneous Materials with Random Voids.” PAMM, vol. 20, no. 1, Wiley,
2021, doi:10.1002/pamm.202000071.
short: 'D. Pivovarov, J. Mergheim, K. Willner, P. Steinmann, in: PAMM, Wiley, 2021.'
date_created: 2022-12-05T20:45:22Z
date_updated: 2023-01-02T11:52:59Z
department:
- _id: '630'
doi: 10.1002/pamm.202000071
intvolume: ' 20'
issue: '1'
language:
- iso: eng
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285'
- _id: '131'
name: 'TRR 285 - A: TRR 285 - Project Area A'
- _id: '139'
name: 'TRR 285 – A05: TRR 285 - Subproject A05'
publication: PAMM
publication_identifier:
issn:
- 1617-7061
- 1617-7061
publication_status: published
publisher: Wiley
status: public
title: Parametric FEM for computational homogenization of heterogeneous materials
with random voids
type: conference
user_id: '14931'
volume: 20
year: '2021'
...
---
_id: '24535'
abstract:
- lang: eng
text: Implementing the concept of mixed construction in modern automotive
engineering requires the joining of sheet metal or extruded profiles with cast
components made from different materials. As weight reduction is desired, these
cast components are usually made from high-strength aluminium alloys of the Al-Si
(Mn, Mg) system, which have limited weldability. The mechanical joinability of
the cast components depends on their ductility, which is influenced by the microstructure.
High-strength cast aluminium alloys have relatively low ductility, which leads
to cracking of the joints. This limits the range of applications for cast aluminium
alloys. In this study, an aluminium alloy of the Al-Si system AlSi9 is used to
investigate relationships between solidification conditions during the sand casting
process, microstructure, mechanical properties, and joinability. The demonstrator
is a stepped plate with a minimum thickness of 2.0 mm and a maximum thickness
of 4.0 mm, whereas the thickness difference between neighbour steps amounts to
0.5 mm. During casting trials, the solidification rates for different plate steps
were measured. The microscopic investigations reveal a correlation between solidification
rates and microstructure parameters such as secondary dendrite arm spacing. Furthermore,
mechanical properties and the mechanical joinability are investigated.
article_number: '1304'
author:
- first_name: Moritz
full_name: Neuser, Moritz
id: '32340'
last_name: Neuser
- first_name: Olexandr
full_name: Grydin, Olexandr
id: '43822'
last_name: Grydin
- first_name: Anatolii
full_name: Andreiev, Anatolii
id: '50215'
last_name: Andreiev
- first_name: Mirko
full_name: Schaper, Mirko
id: '43720'
last_name: Schaper
citation:
ama: Neuser M, Grydin O, Andreiev A, Schaper M. Effect of Solidification Rates at
Sand Casting on the Mechanical Joinability of a Cast Aluminium Alloy. Metals.
Published online 2021. doi:10.3390/met11081304
apa: Neuser, M., Grydin, O., Andreiev, A., & Schaper, M. (2021). Effect of Solidification
Rates at Sand Casting on the Mechanical Joinability of a Cast Aluminium Alloy.
Metals, Article 1304. https://doi.org/10.3390/met11081304
bibtex: '@article{Neuser_Grydin_Andreiev_Schaper_2021, title={Effect of Solidification
Rates at Sand Casting on the Mechanical Joinability of a Cast Aluminium Alloy},
DOI={10.3390/met11081304}, number={1304},
journal={Metals}, author={Neuser, Moritz and Grydin, Olexandr and Andreiev, Anatolii
and Schaper, Mirko}, year={2021} }'
chicago: Neuser, Moritz, Olexandr Grydin, Anatolii Andreiev, and Mirko Schaper.
“Effect of Solidification Rates at Sand Casting on the Mechanical Joinability
of a Cast Aluminium Alloy.” Metals, 2021. https://doi.org/10.3390/met11081304.
ieee: 'M. Neuser, O. Grydin, A. Andreiev, and M. Schaper, “Effect of Solidification
Rates at Sand Casting on the Mechanical Joinability of a Cast Aluminium Alloy,”
Metals, Art. no. 1304, 2021, doi: 10.3390/met11081304.'
mla: Neuser, Moritz, et al. “Effect of Solidification Rates at Sand Casting on the
Mechanical Joinability of a Cast Aluminium Alloy.” Metals, 1304, 2021,
doi:10.3390/met11081304.
short: M. Neuser, O. Grydin, A. Andreiev, M. Schaper, Metals (2021).
date_created: 2021-09-15T18:20:14Z
date_updated: 2024-03-14T15:24:24Z
department:
- _id: '9'
- _id: '158'
- _id: '630'
doi: 10.3390/met11081304
language:
- iso: eng
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285'
- _id: '131'
name: 'TRR 285 - A: TRR 285 - Project Area A'
- _id: '136'
name: 'TRR 285 – A02: TRR 285 - Subproject A02'
publication: Metals
publication_identifier:
issn:
- 2075-4701
publication_status: published
quality_controlled: '1'
status: public
title: Effect of Solidification Rates at Sand Casting on the Mechanical Joinability
of a Cast Aluminium Alloy
type: journal_article
user_id: '32340'
year: '2021'
...
---
_id: '24537'
article_number: '012005'
author:
- first_name: Moritz
full_name: Neuser, Moritz
id: '32340'
last_name: Neuser
- first_name: Fabian
full_name: Kappe, Fabian
id: '66459'
last_name: Kappe
- first_name: M
full_name: Busch, M
last_name: Busch
- first_name: Olexandr
full_name: Grydin, Olexandr
id: '43822'
last_name: Grydin
- first_name: Mathias
full_name: Bobbert, Mathias
id: '7850'
last_name: Bobbert
- first_name: Mirko
full_name: Schaper, Mirko
id: '43720'
last_name: Schaper
- first_name: Gerson
full_name: Meschut, Gerson
id: '32056'
last_name: Meschut
orcid: 0000-0002-2763-1246
- first_name: T
full_name: Hausotte, T
last_name: Hausotte
citation:
ama: 'Neuser M, Kappe F, Busch M, et al. Joining suitability of cast aluminium for
self-piercing riveting. IOP Conference Series: Materials Science and Engineering.
Published online 2021. doi:10.1088/1757-899x/1157/1/012005'
apa: 'Neuser, M., Kappe, F., Busch, M., Grydin, O., Bobbert, M., Schaper, M., Meschut,
G., & Hausotte, T. (2021). Joining suitability of cast aluminium for self-piercing
riveting. IOP Conference Series: Materials Science and Engineering, Article
012005. https://doi.org/10.1088/1757-899x/1157/1/012005'
bibtex: '@article{Neuser_Kappe_Busch_Grydin_Bobbert_Schaper_Meschut_Hausotte_2021,
title={Joining suitability of cast aluminium for self-piercing riveting}, DOI={10.1088/1757-899x/1157/1/012005},
number={012005}, journal={IOP Conference Series: Materials Science and Engineering},
author={Neuser, Moritz and Kappe, Fabian and Busch, M and Grydin, Olexandr and
Bobbert, Mathias and Schaper, Mirko and Meschut, Gerson and Hausotte, T}, year={2021}
}'
chicago: 'Neuser, Moritz, Fabian Kappe, M Busch, Olexandr Grydin, Mathias Bobbert,
Mirko Schaper, Gerson Meschut, and T Hausotte. “Joining Suitability of Cast Aluminium
for Self-Piercing Riveting.” IOP Conference Series: Materials Science and Engineering,
2021. https://doi.org/10.1088/1757-899x/1157/1/012005.'
ieee: 'M. Neuser et al., “Joining suitability of cast aluminium for self-piercing
riveting,” IOP Conference Series: Materials Science and Engineering, Art.
no. 012005, 2021, doi: 10.1088/1757-899x/1157/1/012005.'
mla: 'Neuser, Moritz, et al. “Joining Suitability of Cast Aluminium for Self-Piercing
Riveting.” IOP Conference Series: Materials Science and Engineering, 012005,
2021, doi:10.1088/1757-899x/1157/1/012005.'
short: 'M. Neuser, F. Kappe, M. Busch, O. Grydin, M. Bobbert, M. Schaper, G. Meschut,
T. Hausotte, IOP Conference Series: Materials Science and Engineering (2021).'
date_created: 2021-09-15T18:22:16Z
date_updated: 2024-03-14T15:23:15Z
department:
- _id: '9'
- _id: '158'
- _id: '157'
- _id: '630'
doi: 10.1088/1757-899x/1157/1/012005
language:
- iso: eng
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285'
- _id: '131'
name: 'TRR 285 - A: TRR 285 - Project Area A'
- _id: '133'
name: 'TRR 285 - C: TRR 285 - Project Area C'
- _id: '136'
name: 'TRR 285 – A02: TRR 285 - Subproject A02'
- _id: '146'
name: 'TRR 285 – C02: TRR 285 - Subproject C02'
- _id: '149'
name: 'TRR 285 – C05: TRR 285 - Subproject C05'
publication: 'IOP Conference Series: Materials Science and Engineering'
publication_identifier:
issn:
- 1757-8981
- 1757-899X
publication_status: published
quality_controlled: '1'
status: public
title: Joining suitability of cast aluminium for self-piercing riveting
type: journal_article
user_id: '32340'
year: '2021'
...
---
_id: '25556'
abstract:
- lang: eng
text: AbstractIn order to reduce fuel consumption
and thus pollutant emissions, the automotive industry is increasingly developing
lightweight construction concepts that are accompanied by an increasing usage
of aluminum materials. Due to poor weldability of aluminum in combination with
other materials, mechanical joining methods such as clinching were developed and
established in series production. In order to predict the relevant characteristics
of clinched joints and to ensure the reliability of the process, it is simulated
numerically during product development processes. In this regard, the predictive
accuracy of the simulated process highly depends on the implemented friction model.
In particular, the frictional behavior between the sheet metals as well as between
the sheet metal and clinching tools has a significant impact on the geometrical
formation of the clinched joint. No testing methods exist that can sufficiently
investigate the frictional behavior in sheet materials, especially under high
interface pressures, different relative velocities, and long friction paths, while
allowing a decoupled consideration of the test parameters. This paper describes
the development of further testing concepts based on a proven tribo-torsion test
method for determining friction coefficients between sheet metal materials for
the simulation of clinching processes. For this purpose, the correlation of interface
pressure and the relative velocity between aluminum and steel sheet material in
clinching processes is investigated using numerical simulation. Based on these
findings, the developed concepts focus on determining friction coefficients at
interface pressures of the above materials, yield stress, as well as the reproduction
of the occurring friction conditions between sheet metal materials and tool surfaces
in clinching processes using tool substitutes. Furthermore, wear investigations
between sheet metal material and tool surface were carried out in the friction
tests with subsequent EDX analyses of the frictioned tool surfaces. The developed
method also allows an optical deformation measurement of the sheet metal material
specimen by means of digital image correlation (DIC). Based on a methodological
approach, the test setups and the test systems used are explained, and the functionality
of the concepts is proven by experimental tests using different sheet metal materials.
author:
- first_name: Max
full_name: Böhnke, Max
id: '45779'
last_name: Böhnke
- first_name: Moritz Sebastian
full_name: Rossel, Moritz Sebastian
id: '44503'
last_name: Rossel
- first_name: Christian Roman
full_name: Bielak, Christian Roman
id: '34782'
last_name: Bielak
- first_name: Mathias
full_name: Bobbert, Mathias
id: '7850'
last_name: Bobbert
- first_name: Gerson
full_name: Meschut, Gerson
id: '32056'
last_name: Meschut
orcid: 0000-0002-2763-1246
citation:
ama: Böhnke M, Rossel MS, Bielak CR, Bobbert M, Meschut G. Concept development of
a method for identifying friction coefficients for the numerical simulation of
clinching processes. The International Journal of Advanced Manufacturing Technology.
Published online 2021. doi:10.1007/s00170-021-07986-4
apa: Böhnke, M., Rossel, M. S., Bielak, C. R., Bobbert, M., & Meschut, G. (2021).
Concept development of a method for identifying friction coefficients for the
numerical simulation of clinching processes. The International Journal of Advanced
Manufacturing Technology. https://doi.org/10.1007/s00170-021-07986-4
bibtex: '@article{Böhnke_Rossel_Bielak_Bobbert_Meschut_2021, title={Concept development
of a method for identifying friction coefficients for the numerical simulation
of clinching processes}, DOI={10.1007/s00170-021-07986-4},
journal={The International Journal of Advanced Manufacturing Technology}, author={Böhnke,
Max and Rossel, Moritz Sebastian and Bielak, Christian Roman and Bobbert, Mathias
and Meschut, Gerson}, year={2021} }'
chicago: Böhnke, Max, Moritz Sebastian Rossel, Christian Roman Bielak, Mathias Bobbert,
and Gerson Meschut. “Concept Development of a Method for Identifying Friction
Coefficients for the Numerical Simulation of Clinching Processes.” The International
Journal of Advanced Manufacturing Technology, 2021. https://doi.org/10.1007/s00170-021-07986-4.
ieee: 'M. Böhnke, M. S. Rossel, C. R. Bielak, M. Bobbert, and G. Meschut, “Concept
development of a method for identifying friction coefficients for the numerical
simulation of clinching processes,” The International Journal of Advanced Manufacturing
Technology, 2021, doi: 10.1007/s00170-021-07986-4.'
mla: Böhnke, Max, et al. “Concept Development of a Method for Identifying Friction
Coefficients for the Numerical Simulation of Clinching Processes.” The International
Journal of Advanced Manufacturing Technology, 2021, doi:10.1007/s00170-021-07986-4.
short: M. Böhnke, M.S. Rossel, C.R. Bielak, M. Bobbert, G. Meschut, The International
Journal of Advanced Manufacturing Technology (2021).
date_created: 2021-10-06T10:39:08Z
date_updated: 2023-01-17T09:01:52Z
department:
- _id: '157'
- _id: '630'
doi: 10.1007/s00170-021-07986-4
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://link.springer.com/article/10.1007/s00170-021-07986-4
oa: '1'
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285'
- _id: '131'
name: 'TRR 285 - A: TRR 285 - Project Area A'
- _id: '135'
name: 'TRR 285 – A01: TRR 285 - Subproject A01'
publication: The International Journal of Advanced Manufacturing Technology
publication_identifier:
issn:
- 0268-3768
- 1433-3015
publication_status: published
quality_controlled: '1'
status: public
title: Concept development of a method for identifying friction coefficients for the
numerical simulation of clinching processes
type: journal_article
user_id: '45779'
year: '2021'
...
---
_id: '38517'
author:
- first_name: Julian
full_name: Popp, Julian
last_name: Popp
- first_name: Tobias
full_name: Kleffel, Tobias
last_name: Kleffel
- first_name: Dietmar
full_name: Drummer, Dietmar
last_name: Drummer
citation:
ama: Popp J, Kleffel T, Drummer D. Influence of pin geometry on the joint strength
of CFRT-metal hybrid parts with metallic pins. Joining Plastics. 2021;15(3-4).
apa: Popp, J., Kleffel, T., & Drummer, D. (2021). Influence of pin geometry
on the joint strength of CFRT-metal hybrid parts with metallic pins. Joining
Plastics, 15(3–4).
bibtex: '@article{Popp_Kleffel_Drummer_2021, title={Influence of pin geometry on
the joint strength of CFRT-metal hybrid parts with metallic pins}, volume={15},
number={3–4}, journal={Joining Plastics}, author={Popp, Julian and Kleffel, Tobias
and Drummer, Dietmar}, year={2021} }'
chicago: Popp, Julian, Tobias Kleffel, and Dietmar Drummer. “Influence of Pin Geometry
on the Joint Strength of CFRT-Metal Hybrid Parts with Metallic Pins.” Joining
Plastics 15, no. 3–4 (2021).
ieee: J. Popp, T. Kleffel, and D. Drummer, “Influence of pin geometry on the joint
strength of CFRT-metal hybrid parts with metallic pins,” Joining Plastics,
vol. 15, no. 3–4, 2021.
mla: Popp, Julian, et al. “Influence of Pin Geometry on the Joint Strength of CFRT-Metal
Hybrid Parts with Metallic Pins.” Joining Plastics, vol. 15, no. 3–4, 2021.
short: J. Popp, T. Kleffel, D. Drummer, Joining Plastics 15 (2021).
date_created: 2023-01-23T20:31:42Z
date_updated: 2023-01-23T20:36:47Z
department:
- _id: '630'
intvolume: ' 15'
issue: 3-4
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: '145'
name: 'TRR 285 – C01: TRR 285 - Subproject C01'
publication: Joining Plastics
status: public
title: Influence of pin geometry on the joint strength of CFRT-metal hybrid parts
with metallic pins
type: journal_article
user_id: '7850'
volume: 15
year: '2021'
...
---
_id: '34472'
author:
- first_name: Gunter
full_name: Kullmer, Gunter
id: '291'
last_name: Kullmer
- first_name: Deborah
full_name: Weiß, Deborah
id: '45673'
last_name: Weiß
- first_name: Britta
full_name: Schramm, Britta
id: '4668'
last_name: Schramm
citation:
ama: 'Kullmer G, Weiß D, Schramm B. Entwicklung einer Methode zur differenzierten
Messung des Wachstums der Rissenden von Innenrissen mit der Elektropotentialmethode.
In: Vol DVM-Bericht 253. ; 2021:107-116. doi:10.48447/BR-2021-013'
apa: Kullmer, G., Weiß, D., & Schramm, B. (2021). Entwicklung einer Methode
zur differenzierten Messung des Wachstums der Rissenden von Innenrissen mit der
Elektropotentialmethode. DVM-Bericht 253, 107–116. https://doi.org/10.48447/BR-2021-013
bibtex: '@inproceedings{Kullmer_Weiß_Schramm_2021, title={Entwicklung einer Methode
zur differenzierten Messung des Wachstums der Rissenden von Innenrissen mit der
Elektropotentialmethode}, volume={DVM-Bericht 253}, DOI={10.48447/BR-2021-013},
author={Kullmer, Gunter and Weiß, Deborah and Schramm, Britta}, year={2021}, pages={107–116}
}'
chicago: Kullmer, Gunter, Deborah Weiß, and Britta Schramm. “Entwicklung einer Methode
zur differenzierten Messung des Wachstums der Rissenden von Innenrissen mit der
Elektropotentialmethode,” DVM-Bericht 253:107–16, 2021. https://doi.org/10.48447/BR-2021-013.
ieee: 'G. Kullmer, D. Weiß, and B. Schramm, “Entwicklung einer Methode zur differenzierten
Messung des Wachstums der Rissenden von Innenrissen mit der Elektropotentialmethode,”
Bremen, 2021, vol. DVM-Bericht 253, pp. 107–116, doi: 10.48447/BR-2021-013.'
mla: Kullmer, Gunter, et al. Entwicklung einer Methode zur differenzierten Messung
des Wachstums der Rissenden von Innenrissen mit der Elektropotentialmethode.
2021, pp. 107–16, doi:10.48447/BR-2021-013.
short: 'G. Kullmer, D. Weiß, B. Schramm, in: 2021, pp. 107–116.'
conference:
end_date: 2020-02-19
location: Bremen
name: 'Arbeitskreis: Bruchmechanische Werkstoff- und Bauteilbewertung: Beanspruchungsanalyse,
Prüfmethoden und Anwendungen'
start_date: 2020-02-18
date_created: 2022-12-16T15:09:10Z
date_updated: 2023-02-07T09:37:23Z
department:
- _id: '143'
- _id: '630'
doi: 10.48447/BR-2021-013
language:
- iso: ger
page: 107-116
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285'
- _id: '132'
name: 'TRR 285 - B: TRR 285 - Project Area B'
- _id: '143'
name: 'TRR 285 – B04: TRR 285 - Subproject B04'
status: public
title: Entwicklung einer Methode zur differenzierten Messung des Wachstums der Rissenden
von Innenrissen mit der Elektropotentialmethode
type: conference
user_id: '4668'
volume: DVM-Bericht 253
year: '2021'
...
---
_id: '24006'
author:
- first_name: Deborah
full_name: Weiß, Deborah
id: '45673'
last_name: Weiß
- first_name: Britta
full_name: Schramm, Britta
id: '4668'
last_name: Schramm
- first_name: Moritz
full_name: Neuser, Moritz
id: '32340'
last_name: Neuser
- first_name: Olexandr
full_name: Grydin, Olexandr
id: '43822'
last_name: Grydin
- first_name: Gunter
full_name: Kullmer, Gunter
id: '291'
last_name: Kullmer
citation:
ama: 'Weiß D, Schramm B, Neuser M, Grydin O, Kullmer G. Experimentelle bruchmechanische
Untersuchung eines clinchgeeigneten Bleches aus HCT590X mithilfe einer neuen Probengeometrie.
In: Vol DVM-Bericht 253. ; 2021:231-240. doi:10.48447/BR-2021-025'
apa: Weiß, D., Schramm, B., Neuser, M., Grydin, O., & Kullmer, G. (2021). Experimentelle
bruchmechanische Untersuchung eines clinchgeeigneten Bleches aus HCT590X mithilfe
einer neuen Probengeometrie. DVM-Bericht 253, 231–240. https://doi.org/10.48447/BR-2021-025
bibtex: '@inproceedings{Weiß_Schramm_Neuser_Grydin_Kullmer_2021, title={Experimentelle
bruchmechanische Untersuchung eines clinchgeeigneten Bleches aus HCT590X mithilfe
einer neuen Probengeometrie}, volume={DVM-Bericht 253}, DOI={10.48447/BR-2021-025},
author={Weiß, Deborah and Schramm, Britta and Neuser, Moritz and Grydin, Olexandr
and Kullmer, Gunter}, year={2021}, pages={231–240} }'
chicago: Weiß, Deborah, Britta Schramm, Moritz Neuser, Olexandr Grydin, and Gunter
Kullmer. “Experimentelle bruchmechanische Untersuchung eines clinchgeeigneten
Bleches aus HCT590X mithilfe einer neuen Probengeometrie,” DVM-Bericht 253:231–40,
2021. https://doi.org/10.48447/BR-2021-025.
ieee: 'D. Weiß, B. Schramm, M. Neuser, O. Grydin, and G. Kullmer, “Experimentelle
bruchmechanische Untersuchung eines clinchgeeigneten Bleches aus HCT590X mithilfe
einer neuen Probengeometrie,” Bremen, 2021, vol. DVM-Bericht 253, pp. 231–240,
doi: 10.48447/BR-2021-025.'
mla: Weiß, Deborah, et al. Experimentelle bruchmechanische Untersuchung eines
clinchgeeigneten Bleches aus HCT590X mithilfe einer neuen Probengeometrie.
2021, pp. 231–40, doi:10.48447/BR-2021-025.
short: 'D. Weiß, B. Schramm, M. Neuser, O. Grydin, G. Kullmer, in: 2021, pp. 231–240.'
conference:
end_date: 2020-02-19
location: Bremen
name: 'Arbeitskreis: Bruchmechanische Werkstoff- und Bauteilbewertung: Beanspruchungsanalyse,
Prüfmethoden und Anwendungen'
start_date: 2020-02-18
date_created: 2021-09-09T09:41:40Z
date_updated: 2023-02-13T09:27:01Z
department:
- _id: '158'
- _id: '143'
- _id: '630'
doi: 10.48447/BR-2021-025
language:
- iso: ger
page: 231-240
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285'
- _id: '143'
name: 'TRR 285 – B04: TRR 285 - Subproject B04'
- _id: '131'
name: 'TRR 285 - A: TRR 285 - Project Area A'
- _id: '136'
name: 'TRR 285 – A02: TRR 285 - Subproject A02'
- _id: '132'
name: 'TRR 285 - B: TRR 285 - Project Area B'
status: public
title: Experimentelle bruchmechanische Untersuchung eines clinchgeeigneten Bleches
aus HCT590X mithilfe einer neuen Probengeometrie
type: conference
user_id: '32340'
volume: DVM-Bericht 253
year: '2021'
...
---
_id: '34227'
abstract:
- lang: eng
text: In order to reduce the fuel consumption and consequently the greenhouse emissions,
the automotive industry is implementing lightweight constructions in the body
in white production. As a result, the use of aluminum alloys is continuously increasing.
Due to poor weldability of aluminum in combination with other materials, mechanical
joining technologies like clinching are increasingly used. In order to predict
relevant characteristics of clinched joints and to ensure the reliability of the
process, it is simulated numerically during product development processes. In
this regard the predictive accuracy of the simulated process highly depends on
the implemented friction model. In particular, the frictional behavior between
the sheet metals affects the geometrical formation of the clinched joint significantly.
This paper presents a testing method, which enables to determine the frictional
coefficients between sheet metal materials for the simulation of clinching processes.
For this purpose, the correlation of interface pressure and the relative velocity
between aluminum sheets in clinching processes is investigated using numerical
simulation. Furthermore, the developed testing method focuses on the specimen
geometry as well as the reproduction of the occurring friction conditions between
two sheet metal materials in clinching processes. Based on a methodical approach
the test setup is explained and the functionality of the method is proven by experimental
tests using sheet metal material EN AW6014.
author:
- first_name: Moritz Sebastian
full_name: Rossel, Moritz Sebastian
id: '44503'
last_name: Rossel
- first_name: Max
full_name: Böhnke, Max
id: '45779'
last_name: Böhnke
- first_name: Christian Roman
full_name: Bielak, Christian Roman
id: '34782'
last_name: Bielak
- first_name: Mathias
full_name: Bobbert, Mathias
id: '7850'
last_name: Bobbert
- first_name: Gerson
full_name: Meschut, Gerson
id: '32056'
last_name: Meschut
orcid: 0000-0002-2763-1246
citation:
ama: Rossel MS, Böhnke M, Bielak CR, Bobbert M, Meschut G. Development of a Method
for the Identification of Friction Coefficients in Sheet Metal Materials for the
Numerical Simulation of Clinching Processes. Key Engineering Materials.
2021;883:81-88. doi:10.4028/www.scientific.net/kem.883.81
apa: Rossel, M. S., Böhnke, M., Bielak, C. R., Bobbert, M., & Meschut, G. (2021).
Development of a Method for the Identification of Friction Coefficients in Sheet
Metal Materials for the Numerical Simulation of Clinching Processes. Key Engineering
Materials, 883, 81–88. https://doi.org/10.4028/www.scientific.net/kem.883.81
bibtex: '@article{Rossel_Böhnke_Bielak_Bobbert_Meschut_2021, title={Development
of a Method for the Identification of Friction Coefficients in Sheet Metal Materials
for the Numerical Simulation of Clinching Processes}, volume={883}, DOI={10.4028/www.scientific.net/kem.883.81},
journal={Key Engineering Materials}, publisher={Trans Tech Publications, Ltd.},
author={Rossel, Moritz Sebastian and Böhnke, Max and Bielak, Christian Roman and
Bobbert, Mathias and Meschut, Gerson}, year={2021}, pages={81–88} }'
chicago: 'Rossel, Moritz Sebastian, Max Böhnke, Christian Roman Bielak, Mathias
Bobbert, and Gerson Meschut. “Development of a Method for the Identification of
Friction Coefficients in Sheet Metal Materials for the Numerical Simulation of
Clinching Processes.” Key Engineering Materials 883 (2021): 81–88. https://doi.org/10.4028/www.scientific.net/kem.883.81.'
ieee: 'M. S. Rossel, M. Böhnke, C. R. Bielak, M. Bobbert, and G. Meschut, “Development
of a Method for the Identification of Friction Coefficients in Sheet Metal Materials
for the Numerical Simulation of Clinching Processes,” Key Engineering Materials,
vol. 883, pp. 81–88, 2021, doi: 10.4028/www.scientific.net/kem.883.81.'
mla: Rossel, Moritz Sebastian, et al. “Development of a Method for the Identification
of Friction Coefficients in Sheet Metal Materials for the Numerical Simulation
of Clinching Processes.” Key Engineering Materials, vol. 883, Trans Tech
Publications, Ltd., 2021, pp. 81–88, doi:10.4028/www.scientific.net/kem.883.81.
short: M.S. Rossel, M. Böhnke, C.R. Bielak, M. Bobbert, G. Meschut, Key Engineering
Materials 883 (2021) 81–88.
date_created: 2022-12-05T21:57:07Z
date_updated: 2023-03-09T11:43:31Z
department:
- _id: '630'
- _id: '157'
doi: 10.4028/www.scientific.net/kem.883.81
intvolume: ' 883'
keyword:
- Mechanical Engineering
- Mechanics of Materials
- General Materials Science
language:
- iso: eng
page: 81-88
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285'
- _id: '131'
name: 'TRR 285 - A: TRR 285 - Project Area A'
- _id: '135'
name: 'TRR 285 – A01: TRR 285 - Subproject A01'
publication: Key Engineering Materials
publication_identifier:
issn:
- 1662-9795
publication_status: published
publisher: Trans Tech Publications, Ltd.
quality_controlled: '1'
status: public
title: Development of a Method for the Identification of Friction Coefficients in
Sheet Metal Materials for the Numerical Simulation of Clinching Processes
type: journal_article
user_id: '7850'
volume: 883
year: '2021'
...