---
_id: '30100'
abstract:
- lang: eng
text: Since the application of mechanical joining methods, such as clinching or
riveting, offers a robust solution for the generation of advanced multi-material
connections, the use in the field of lightweight designs (e.g. automotive industry)
is steadily increasing. Therefore, not only the design of an individual joint
is required but also the dimensioning of the entire joining connection is crucial.
However, in comparison to thermal joining techniques, such as spot welding, the
evaluation of the joints’ resistance against defined requirements (e.g. types
of load, minimal amount of load cycles) mainly relies on the consideration of
expert knowledge, a few design principles and a small amount of experimental data.
Since this generally implies the involvement of several domains, such as the material
characterization or the part design, a tremendous amount of data and knowledge
is separately generated for a certain dimensioning process. Nevertheless, the
lack of formalization and standardization in representing the gained knowledge
leads to a difficult and inconsistent reuse, sharing or searching of already existing
information. Thus, this contribution presents a specific ontology for the provision
of cross-domain knowledge about mechanical joining processes and highlights two
potential use cases of this ontology in the design of clinched and pin joints.
author:
- first_name: Christoph
full_name: Zirngibl, Christoph
last_name: Zirngibl
- first_name: Patricia
full_name: Kügler, Patricia
last_name: Kügler
- first_name: Julian
full_name: Popp, Julian
last_name: Popp
- 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: Dietmar
full_name: Drummer, Dietmar
last_name: Drummer
- first_name: Gerson
full_name: Meschut, Gerson
id: '32056'
last_name: Meschut
orcid: 0000-0002-2763-1246
- first_name: Sandro
full_name: Wartzack, Sandro
last_name: Wartzack
- first_name: Benjamin
full_name: Schleich, Benjamin
last_name: Schleich
citation:
ama: Zirngibl C, Kügler P, Popp J, et al. Provision of cross-domain knowledge in
mechanical joining using ontologies. Production Engineering. Published
online 2022. doi:10.1007/s11740-022-01117-y
apa: Zirngibl, C., Kügler, P., Popp, J., Bielak, C. R., Bobbert, M., Drummer, D.,
Meschut, G., Wartzack, S., & Schleich, B. (2022). Provision of cross-domain
knowledge in mechanical joining using ontologies. Production Engineering.
https://doi.org/10.1007/s11740-022-01117-y
bibtex: '@article{Zirngibl_Kügler_Popp_Bielak_Bobbert_Drummer_Meschut_Wartzack_Schleich_2022,
title={Provision of cross-domain knowledge in mechanical joining using ontologies},
DOI={10.1007/s11740-022-01117-y},
journal={Production Engineering}, publisher={Springer Science and Business Media
LLC}, author={Zirngibl, Christoph and Kügler, Patricia and Popp, Julian and Bielak,
Christian Roman and Bobbert, Mathias and Drummer, Dietmar and Meschut, Gerson
and Wartzack, Sandro and Schleich, Benjamin}, year={2022} }'
chicago: Zirngibl, Christoph, Patricia Kügler, Julian Popp, Christian Roman Bielak,
Mathias Bobbert, Dietmar Drummer, Gerson Meschut, Sandro Wartzack, and Benjamin
Schleich. “Provision of Cross-Domain Knowledge in Mechanical Joining Using Ontologies.”
Production Engineering, 2022. https://doi.org/10.1007/s11740-022-01117-y.
ieee: 'C. Zirngibl et al., “Provision of cross-domain knowledge in mechanical
joining using ontologies,” Production Engineering, 2022, doi: 10.1007/s11740-022-01117-y.'
mla: Zirngibl, Christoph, et al. “Provision of Cross-Domain Knowledge in Mechanical
Joining Using Ontologies.” Production Engineering, Springer Science and
Business Media LLC, 2022, doi:10.1007/s11740-022-01117-y.
short: C. Zirngibl, P. Kügler, J. Popp, C.R. Bielak, M. Bobbert, D. Drummer, G.
Meschut, S. Wartzack, B. Schleich, Production Engineering (2022).
date_created: 2022-02-25T07:19:45Z
date_updated: 2023-04-27T07:42:19Z
department:
- _id: '157'
doi: 10.1007/s11740-022-01117-y
keyword:
- Industrial and Manufacturing Engineering
- Mechanical Engineering
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: '144'
name: 'TRR 285 – B05: TRR 285 - Subproject B05'
- _id: '133'
name: 'TRR 285 - C: TRR 285 - Project Area C'
- _id: '145'
name: 'TRR 285 – C01: TRR 285 - Subproject C01'
- _id: '131'
name: 'TRR 285 - A: TRR 285 - Project Area A'
- _id: '135'
name: 'TRR 285 – A01: TRR 285 - Subproject A01'
publication: Production Engineering
publication_identifier:
issn:
- 0944-6524
- 1863-7353
publication_status: published
publisher: Springer Science and Business Media LLC
quality_controlled: '1'
status: public
title: Provision of cross-domain knowledge in mechanical joining using ontologies
type: journal_article
user_id: '7850'
year: '2022'
...
---
_id: '34210'
abstract:
- lang: eng
text: The application of the mechanical joining process clinching enables the joining
of sheet metals with a wide range of material-thickness configurations, which
is of interest in lightweight construction of multi-material structures. Each
material-thickness combination results in a joint with its own property profile
that is affected differently by variations. Manufacturing process-related effects
from preforming steps influence the geometric shape of a clinched joint as well
as its load-bearing capacity. During the clinching process high degrees of plastic
strain, increased temperatures and high strain rates occur. In this context, a
3D numerical model was developed which can represent the material-specific behaviour
during the process chain steps sheet metal forming, joining, and loading phase
in order to achieve a high predictive accuracy of the simulation. Besides to the
investigation of the prediction accuracy, the extent of the influence of individual
modelling aspects such as temperature and strain rate dependency is examined.
author:
- first_name: Christian Roman
full_name: Bielak, Christian Roman
id: '34782'
last_name: Bielak
- first_name: Max
full_name: Böhnke, Max
id: '45779'
last_name: Böhnke
- 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: 'Bielak CR, Böhnke M, Bobbert M, Meschut G. Development of a Numerical 3D Model
for Analyzing Clinched Joints in Versatile Process Chains. In: The Minerals,
Metals & Materials Series. Springer International Publishing; 2022.
doi:10.1007/978-3-031-06212-4_15'
apa: Bielak, C. R., Böhnke, M., Bobbert, M., & Meschut, G. (2022). Development
of a Numerical 3D Model for Analyzing Clinched Joints in Versatile Process Chains.
In The Minerals, Metals & Materials Series. Springer International
Publishing. https://doi.org/10.1007/978-3-031-06212-4_15
bibtex: '@inbook{Bielak_Böhnke_Bobbert_Meschut_2022, place={Cham}, title={Development
of a Numerical 3D Model for Analyzing Clinched Joints in Versatile Process Chains},
DOI={10.1007/978-3-031-06212-4_15},
booktitle={The Minerals, Metals & Materials Series}, publisher={Springer
International Publishing}, author={Bielak, Christian Roman and Böhnke, Max and
Bobbert, Mathias and Meschut, Gerson}, year={2022} }'
chicago: 'Bielak, Christian Roman, Max Böhnke, Mathias Bobbert, and Gerson Meschut.
“Development of a Numerical 3D Model for Analyzing Clinched Joints in Versatile
Process Chains.” In The Minerals, Metals & Materials Series. Cham:
Springer International Publishing, 2022. https://doi.org/10.1007/978-3-031-06212-4_15.'
ieee: 'C. R. Bielak, M. Böhnke, M. Bobbert, and G. Meschut, “Development of a Numerical
3D Model for Analyzing Clinched Joints in Versatile Process Chains,” in The
Minerals, Metals & Materials Series, Cham: Springer International
Publishing, 2022.'
mla: Bielak, Christian Roman, et al. “Development of a Numerical 3D Model for Analyzing
Clinched Joints in Versatile Process Chains.” The Minerals, Metals &
Materials Series, Springer International Publishing, 2022, doi:10.1007/978-3-031-06212-4_15.
short: 'C.R. Bielak, M. Böhnke, M. Bobbert, G. Meschut, in: The Minerals, Metals
& Materials Series, Springer International Publishing, Cham, 2022.'
date_created: 2022-12-05T20:56:01Z
date_updated: 2023-04-27T11:21:52Z
doi: 10.1007/978-3-031-06212-4_15
language:
- iso: eng
place: Cham
popular_science: '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 Minerals, Metals & Materials Series
publication_identifier:
isbn:
- '9783031062117'
- '9783031062124'
issn:
- 2367-1181
- 2367-1696
publication_status: published
publisher: Springer International Publishing
quality_controlled: '1'
status: public
title: Development of a Numerical 3D Model for Analyzing Clinched Joints in Versatile
Process Chains
type: book_chapter
user_id: '34782'
year: '2022'
...
---
_id: '30962'
abstract:
- lang: eng
text: Clinching as a mechanical joining process has become established
in many areas of car body. In order to predict relevant properties of clinched
joints and to ensure the reliability of the process, it is numerically simulated
during the product development process. The prediction accuracy of the simulated
process depends on the implemented friction model. Therefore, a new method for
determining friction coefficients in sheet metal materials was developed and tested.
The aim of this study is the numerical investigation of this experimental method
by means of FE simulation. The experimental setup is modelled in a 3D numerical
simulation taking into account the process parameters varying in the experiment,
such as geometric properties, contact pressure and contact velocity. Furthermore,
the contact description of the model is calibrated via the experimentally determined
friction coefficients according to clinch-relevant parameter space. It is shown
that the assumptions made in the determination of the experimental data in preliminary
work are valid. In addition, it is investigated to what extent the standard Coulomb
friction model in the FEM can reproduce the results of the experimental method.
article_number: '146442072210934'
author:
- first_name: Christian Roman
full_name: Bielak, Christian Roman
id: '34782'
last_name: Bielak
- first_name: Max
full_name: Böhnke, Max
id: '45779'
last_name: Böhnke
- 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: 'Bielak CR, Böhnke M, Bobbert M, Meschut G. Numerical investigation of a friction
test to determine the friction coefficients for the clinching process. Proceedings
of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design
and Applications. Published online 2022. doi:10.1177/14644207221093468'
apa: 'Bielak, C. R., Böhnke, M., Bobbert, M., & Meschut, G. (2022). Numerical
investigation of a friction test to determine the friction coefficients for
the clinching process. Proceedings of the Institution of Mechanical Engineers,
Part L: Journal of Materials: Design and Applications, Article 146442072210934.
https://doi.org/10.1177/14644207221093468'
bibtex: '@article{Bielak_Böhnke_Bobbert_Meschut_2022, title={Numerical investigation
of a friction test to determine the friction coefficients for the clinching
process}, DOI={10.1177/14644207221093468},
number={146442072210934}, journal={Proceedings of the Institution of Mechanical
Engineers, Part L: Journal of Materials: Design and Applications}, publisher={SAGE
Publications}, author={Bielak, Christian Roman and Böhnke, Max and Bobbert, Mathias
and Meschut, Gerson}, year={2022} }'
chicago: 'Bielak, Christian Roman, Max Böhnke, Mathias Bobbert, and Gerson Meschut.
“Numerical Investigation of a Friction Test to Determine the Friction Coefficients
for the Clinching Process.” Proceedings of the Institution of Mechanical Engineers,
Part L: Journal of Materials: Design and Applications, 2022. https://doi.org/10.1177/14644207221093468.'
ieee: 'C. R. Bielak, M. Böhnke, M. Bobbert, and G. Meschut, “Numerical investigation
of a friction test to determine the friction coefficients for the clinching
process,” Proceedings of the Institution of Mechanical Engineers, Part L: Journal
of Materials: Design and Applications, Art. no. 146442072210934, 2022, doi:
10.1177/14644207221093468.'
mla: 'Bielak, Christian Roman, et al. “Numerical Investigation of a Friction Test
to Determine the Friction Coefficients for the Clinching Process.” Proceedings
of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design
and Applications, 146442072210934, SAGE Publications, 2022, doi:10.1177/14644207221093468.'
short: 'C.R. Bielak, M. Böhnke, M. Bobbert, G. Meschut, Proceedings of the Institution
of Mechanical Engineers, Part L: Journal of Materials: Design and Applications
(2022).'
date_created: 2022-04-27T08:58:11Z
date_updated: 2023-04-28T11:31:35Z
department:
- _id: '157'
- _id: '630'
doi: 10.1177/14644207221093468
keyword:
- Mechanical Engineering
- General Materials Science
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: '135'
name: 'TRR 285 – A01: TRR 285 - Subproject A01'
publication: 'Proceedings of the Institution of Mechanical Engineers, Part L: Journal
of Materials: Design and Applications'
publication_identifier:
issn:
- 1464-4207
- 2041-3076
publication_status: published
publisher: SAGE Publications
quality_controlled: '1'
status: public
title: Numerical investigation of a friction test to determine the friction coefficients
for the clinching process
type: journal_article
user_id: '34782'
year: '2022'
...
---
_id: '30963'
abstract:
- lang: eng
text: AbstractIn this paper, a study based on experimental
and numerical simulations is performed to analyze fatigue cracks in clinched joints.
An experimental investigation is conducted to determine the failure modes of clinched
joints under cyclic loading at different load amplitudes with single-lap shear
tests. In addition, numerical FEM simulations of clinching process and subsequent
shear loading are performed to support the experimental investigations by analyzing
the state of stresses at the location of failure. An attempt is made to explain
the location of crack initiation in the experiments using evaluation variables
such as contact shear stress and maximum principal stress.
author:
- first_name: Lars
full_name: Ewenz, Lars
last_name: Ewenz
- first_name: Christian Roman
full_name: Bielak, Christian Roman
id: '34782'
last_name: Bielak
- first_name: Mortaza
full_name: Otroshi, Mortaza
id: '71269'
last_name: Otroshi
orcid: 0000-0002-8652-9209
- 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
- first_name: Martina
full_name: Zimmermann, Martina
last_name: Zimmermann
citation:
ama: Ewenz L, Bielak CR, Otroshi M, Bobbert M, Meschut G, Zimmermann M. Numerical
and experimental identification of fatigue crack initiation sites in clinched
joints. Production Engineering. 2022;16(2-3):305-313. doi:10.1007/s11740-022-01124-z
apa: Ewenz, L., Bielak, C. R., Otroshi, M., Bobbert, M., Meschut, G., & Zimmermann,
M. (2022). Numerical and experimental identification of fatigue crack initiation
sites in clinched joints. Production Engineering, 16(2–3), 305–313.
https://doi.org/10.1007/s11740-022-01124-z
bibtex: '@article{Ewenz_Bielak_Otroshi_Bobbert_Meschut_Zimmermann_2022, title={Numerical
and experimental identification of fatigue crack initiation sites in clinched
joints}, volume={16}, DOI={10.1007/s11740-022-01124-z},
number={2–3}, journal={Production Engineering}, publisher={Springer Science and
Business Media LLC}, author={Ewenz, Lars and Bielak, Christian Roman and Otroshi,
Mortaza and Bobbert, Mathias and Meschut, Gerson and Zimmermann, Martina}, year={2022},
pages={305–313} }'
chicago: 'Ewenz, Lars, Christian Roman Bielak, Mortaza Otroshi, Mathias Bobbert,
Gerson Meschut, and Martina Zimmermann. “Numerical and Experimental Identification
of Fatigue Crack Initiation Sites in Clinched Joints.” Production Engineering
16, no. 2–3 (2022): 305–13. https://doi.org/10.1007/s11740-022-01124-z.'
ieee: 'L. Ewenz, C. R. Bielak, M. Otroshi, M. Bobbert, G. Meschut, and M. Zimmermann,
“Numerical and experimental identification of fatigue crack initiation sites in
clinched joints,” Production Engineering, vol. 16, no. 2–3, pp. 305–313,
2022, doi: 10.1007/s11740-022-01124-z.'
mla: Ewenz, Lars, et al. “Numerical and Experimental Identification of Fatigue Crack
Initiation Sites in Clinched Joints.” Production Engineering, vol. 16,
no. 2–3, Springer Science and Business Media LLC, 2022, pp. 305–13, doi:10.1007/s11740-022-01124-z.
short: L. Ewenz, C.R. Bielak, M. Otroshi, M. Bobbert, G. Meschut, M. Zimmermann,
Production Engineering 16 (2022) 305–313.
date_created: 2022-04-27T09:02:05Z
date_updated: 2023-04-28T11:31:17Z
department:
- _id: '157'
doi: 10.1007/s11740-022-01124-z
intvolume: ' 16'
issue: 2-3
keyword:
- Industrial and Manufacturing Engineering
- Mechanical Engineering
language:
- iso: eng
page: 305-313
project:
- _id: '132'
name: 'TRR 285 - B: TRR 285 - Project Area B'
- _id: '141'
name: 'TRR 285 – B02: TRR 285 - Subproject B02'
- _id: '131'
name: 'TRR 285 - A: TRR 285 - Project Area A'
- _id: '135'
name: 'TRR 285 – A01: TRR 285 - Subproject A01'
publication: Production Engineering
publication_identifier:
issn:
- 0944-6524
- 1863-7353
publication_status: published
publisher: Springer Science and Business Media LLC
quality_controlled: '1'
status: public
title: Numerical and experimental identification of fatigue crack initiation sites
in clinched joints
type: journal_article
user_id: '34782'
volume: 16
year: '2022'
...
---
_id: '29951'
abstract:
- lang: eng
text: The components of a body in white consist of many individual thin-walled sheet
metal parts, which usually are manufactured in deep-drawing processes. In general,
the conditions in a deep-drawing process change due to changing tribology conditions,
varying degrees of spring back, or scattering material properties in the sheet
blanks, which affects the resulting pre-strain. Mechanical joining processes,
especially clinching, are influenced by these process-related pre-strains. The
final geometric shape of a clinched joint is affected to a significant level by
the prior material deformation when joining with constant process parameters.
That leads to a change in the stiffness and force transmission in the clinched
joint due to the different geometric dimensions, such as interlock, neck thickness
and bottom thickness, which directly affect the load bearing capacity. Here, the
influence of the pre-straining in the deep drawing process on the force distribution
in clinch points in an automotive assembly is investigated by finite-element models
numerically. In further studies, the results are implemented in an optimization
tool for designing clinched components. The methodology starts with a pre-straining
of metal sheets. This step is followed by 2D rotationally symmetric forming simulations
of the joining process. The resulting mesh of each forming simulation is rotated
and 3D models are obtained. The clinched joint solid model with pre-strains is
used further to determine the joint stiffnesses. With the simulation of the same
test set-up with an equivalent point-connector model, the equivalent stiffness
for each pre-strain combination is determined. Simulations are performed on a
clinched component to assess the influence of pre-strain and sheet thinning on
the clinched joint loadings by using the equivalent stiffnesses. The investigations
clearly show that for the selected component, the loadings at the clinch points
are dependent on the sheet thinning and the stiffnesses due to pre-strain. The
magnitude of the influence varies depending on the quantity considered. For example,
the shear force is more sensitive to the joint stiffness than to the sheet thinning.
author:
- first_name: Sven
full_name: Martin, Sven
id: '38177'
last_name: Martin
- 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: Thomas
full_name: Tröster, Thomas
id: '553'
last_name: Tröster
- first_name: Gerson
full_name: Meschut, Gerson
id: '32056'
last_name: Meschut
orcid: 0000-0002-2763-1246
citation:
ama: Martin S, Bielak CR, Bobbert M, Tröster T, Meschut G. Numerical investigation
of the clinched joint loadings considering the initial pre-strain in the joining
area. Production Engineering. Published online 2022. doi:10.1007/s11740-021-01103-w
apa: Martin, S., Bielak, C. R., Bobbert, M., Tröster, T., & Meschut, G. (2022).
Numerical investigation of the clinched joint loadings considering the initial
pre-strain in the joining area. Production Engineering. https://doi.org/10.1007/s11740-021-01103-w
bibtex: '@article{Martin_Bielak_Bobbert_Tröster_Meschut_2022, title={Numerical investigation
of the clinched joint loadings considering the initial pre-strain in the joining
area}, DOI={10.1007/s11740-021-01103-w},
journal={Production Engineering}, publisher={Springer Science and Business Media
LLC}, author={Martin, Sven and Bielak, Christian Roman and Bobbert, Mathias and
Tröster, Thomas and Meschut, Gerson}, year={2022} }'
chicago: Martin, Sven, Christian Roman Bielak, Mathias Bobbert, Thomas Tröster,
and Gerson Meschut. “Numerical Investigation of the Clinched Joint Loadings Considering
the Initial Pre-Strain in the Joining Area.” Production Engineering, 2022.
https://doi.org/10.1007/s11740-021-01103-w.
ieee: 'S. Martin, C. R. Bielak, M. Bobbert, T. Tröster, and G. Meschut, “Numerical
investigation of the clinched joint loadings considering the initial pre-strain
in the joining area,” Production Engineering, 2022, doi: 10.1007/s11740-021-01103-w.'
mla: Martin, Sven, et al. “Numerical Investigation of the Clinched Joint Loadings
Considering the Initial Pre-Strain in the Joining Area.” Production Engineering,
Springer Science and Business Media LLC, 2022, doi:10.1007/s11740-021-01103-w.
short: S. Martin, C.R. Bielak, M. Bobbert, T. Tröster, G. Meschut, Production Engineering
(2022).
date_created: 2022-02-22T12:52:09Z
date_updated: 2023-04-28T11:57:22Z
department:
- _id: '321'
- _id: '149'
- _id: '630'
- _id: '157'
doi: 10.1007/s11740-021-01103-w
keyword:
- Industrial and Manufacturing Engineering
- Mechanical Engineering
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://link.springer.com/article/10.1007/s11740-021-01103-w
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'
- _id: '132'
name: 'TRR 285 - B: TRR 285 - Project Area B'
- _id: '140'
name: 'TRR 285 – B01: TRR 285 - Subproject B01'
publication: Production Engineering
publication_identifier:
issn:
- 0944-6524
- 1863-7353
publication_status: published
publisher: Springer Science and Business Media LLC
quality_controlled: '1'
status: public
title: Numerical investigation of the clinched joint loadings considering the initial
pre-strain in the joining area
type: journal_article
user_id: '38177'
year: '2022'
...
---
_id: '63829'
abstract:
- lang: eng
text: 'The 3D shear deformation and failure behaviour of a glass fibre reinforced
polypropylene in a shear strain rate range of γ˙=2.2×10−4 to 3.4 1s is investigated.
An Iosipescu testing setup on a servo-hydraulic high speed testing unit is used
to experimentally characterise the in-plane and out-of-plane behaviour utilising
three specimen configurations (12-, 13- and 31-direction). The experimental procedure
as well as the testing results are presented and discussed. The measured shear
stress–shear strain relations indicate a highly nonlinear behaviour and a distinct
rate dependency. Two methods are investigated to derive according material characteristics:
a classical engineering approach based on moduli and strengths and a data driven
approach based on the curve progression. In all cases a Johnson–Cook based formulation
is used to describe rate dependency. The analysis methodologies as well as the
derived model parameters are described and discussed in detail. It is shown that
a phenomenologically enhanced regression can be used to obtain material characteristics
for a generalising constitutive model based on the data driven approach.'
article_number: '318'
article_type: original
author:
- first_name: Johannes
full_name: Gerritzen, Johannes
id: '105344'
last_name: Gerritzen
orcid: 0000-0002-0169-8602
- first_name: Andreas
full_name: Hornig, Andreas
last_name: Hornig
- first_name: Benjamin
full_name: Gröger, Benjamin
last_name: Gröger
- first_name: Maik
full_name: Gude, Maik
last_name: Gude
citation:
ama: 'Gerritzen J, Hornig A, Gröger B, Gude M. A Data Driven Modelling Approach
for the Strain Rate Dependent 3D Shear Deformation and Failure of Thermoplastic
Fibre Reinforced Composites: Experimental Characterisation and Deriving Modelling
Parameters. Journal of Composites Science. 2022;6(10). doi:10.3390/jcs6100318'
apa: 'Gerritzen, J., Hornig, A., Gröger, B., & Gude, M. (2022). A Data Driven
Modelling Approach for the Strain Rate Dependent 3D Shear Deformation and Failure
of Thermoplastic Fibre Reinforced Composites: Experimental Characterisation and
Deriving Modelling Parameters. Journal of Composites Science, 6(10),
Article 318. https://doi.org/10.3390/jcs6100318'
bibtex: '@article{Gerritzen_Hornig_Gröger_Gude_2022, title={A Data Driven Modelling
Approach for the Strain Rate Dependent 3D Shear Deformation and Failure of Thermoplastic
Fibre Reinforced Composites: Experimental Characterisation and Deriving Modelling
Parameters}, volume={6}, DOI={10.3390/jcs6100318},
number={10318}, journal={Journal of Composites Science}, publisher={MDPI AG},
author={Gerritzen, Johannes and Hornig, Andreas and Gröger, Benjamin and Gude,
Maik}, year={2022} }'
chicago: 'Gerritzen, Johannes, Andreas Hornig, Benjamin Gröger, and Maik Gude. “A
Data Driven Modelling Approach for the Strain Rate Dependent 3D Shear Deformation
and Failure of Thermoplastic Fibre Reinforced Composites: Experimental Characterisation
and Deriving Modelling Parameters.” Journal of Composites Science 6, no.
10 (2022). https://doi.org/10.3390/jcs6100318.'
ieee: 'J. Gerritzen, A. Hornig, B. Gröger, and M. Gude, “A Data Driven Modelling
Approach for the Strain Rate Dependent 3D Shear Deformation and Failure of Thermoplastic
Fibre Reinforced Composites: Experimental Characterisation and Deriving Modelling
Parameters,” Journal of Composites Science, vol. 6, no. 10, Art. no. 318,
2022, doi: 10.3390/jcs6100318.'
mla: 'Gerritzen, Johannes, et al. “A Data Driven Modelling Approach for the Strain
Rate Dependent 3D Shear Deformation and Failure of Thermoplastic Fibre Reinforced
Composites: Experimental Characterisation and Deriving Modelling Parameters.”
Journal of Composites Science, vol. 6, no. 10, 318, MDPI AG, 2022, doi:10.3390/jcs6100318.'
short: J. Gerritzen, A. Hornig, B. Gröger, M. Gude, Journal of Composites Science
6 (2022).
date_created: 2026-02-02T08:41:00Z
date_updated: 2026-02-27T06:47:18Z
doi: 10.3390/jcs6100318
intvolume: ' 6'
issue: '10'
language:
- iso: eng
project:
- _id: '137'
name: TRR 285 - Subproject A03
- _id: '131'
name: TRR 285 - Project Area A
- _id: '130'
name: 'TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
Prozessketten'
publication: Journal of Composites Science
publication_identifier:
issn:
- 2504-477X
publication_status: published
publisher: MDPI AG
status: public
title: 'A Data Driven Modelling Approach for the Strain Rate Dependent 3D Shear Deformation
and Failure of Thermoplastic Fibre Reinforced Composites: Experimental Characterisation
and Deriving Modelling Parameters'
type: journal_article
user_id: '105344'
volume: 6
year: '2022'
...
---
_id: '30647'
abstract:
- lang: eng
text: The increasing economic and ecological demands on the mobility sector require
efforts to reduce resource consumption in both the production and utilization
phases. The use of lightweight construction technologies can save material and
increase energy efficiency during operation. Multi-material systems consisting
of different materials and geometries are used to achieve weight reduction. Since
conventional joining processes reach their limits in the connection of these components,
new methods and technologies are necessary in order to be able to react versatilely
to varying process and disturbance variables. For fundamental investigations of
new possibilities in joining technology, numerical investigations are helpful
to identify process parameters. To generate valid results, robust and efficient
material models are developed which are adapted to the requirements of versatile
joining technologies, for instance to the high plastic strains associated with
self-piercing riveting. To describe the inherent strain-induced plastic orthotropy
of sheet metal an anisotropic Hill-plasticity model is formulated. Tensile tests
for different sheet orientations are conducted both experimentally and numerically
to adjust the anisotropic material parameters by inverse parameter identification
for aluminium EN AW-6014 and steel HCT590X. Then, the layer compression test is
used to validate the model and the previously identified parameters.
author:
- first_name: J.
full_name: Friedlein, J.
last_name: Friedlein
- first_name: S.
full_name: Wituschek, S.
last_name: Wituschek
- first_name: M.
full_name: Lechner, M.
last_name: Lechner
- first_name: J.
full_name: Mergheim, J.
last_name: Mergheim
- first_name: P.
full_name: Steinmann, P.
last_name: Steinmann
citation:
ama: 'Friedlein J, Wituschek S, Lechner M, Mergheim J, Steinmann P. Inverse parameter
identification of an anisotropic plasticity model for sheet metal. IOP Conference
Series: Materials Science and Engineering. 2021;1157:012004. doi:10.1088/1757-899X/1157/1/012004'
apa: 'Friedlein, J., Wituschek, S., Lechner, M., Mergheim, J., & Steinmann,
P. (2021). Inverse parameter identification of an anisotropic plasticity model
for sheet metal. IOP Conference Series: Materials Science and Engineering,
1157, 012004. https://doi.org/10.1088/1757-899X/1157/1/012004'
bibtex: '@article{Friedlein_Wituschek_Lechner_Mergheim_Steinmann_2021, title={Inverse
parameter identification of an anisotropic plasticity model for sheet metal},
volume={1157}, DOI={10.1088/1757-899X/1157/1/012004},
journal={IOP Conference Series: Materials Science and Engineering}, author={Friedlein,
J. and Wituschek, S. and Lechner, M. and Mergheim, J. and Steinmann, P.}, year={2021},
pages={012004} }'
chicago: 'Friedlein, J., S. Wituschek, M. Lechner, J. Mergheim, and P. Steinmann.
“Inverse Parameter Identification of an Anisotropic Plasticity Model for Sheet
Metal.” IOP Conference Series: Materials Science and Engineering 1157 (2021):
012004. https://doi.org/10.1088/1757-899X/1157/1/012004.'
ieee: 'J. Friedlein, S. Wituschek, M. Lechner, J. Mergheim, and P. Steinmann, “Inverse
parameter identification of an anisotropic plasticity model for sheet metal,”
IOP Conference Series: Materials Science and Engineering, vol. 1157, p.
012004, 2021, doi: 10.1088/1757-899X/1157/1/012004.'
mla: 'Friedlein, J., et al. “Inverse Parameter Identification of an Anisotropic
Plasticity Model for Sheet Metal.” IOP Conference Series: Materials Science
and Engineering, vol. 1157, 2021, p. 012004, doi:10.1088/1757-899X/1157/1/012004.'
short: 'J. Friedlein, S. Wituschek, M. Lechner, J. Mergheim, P. Steinmann, IOP Conference
Series: Materials Science and Engineering 1157 (2021) 012004.'
date_created: 2022-03-28T12:42:10Z
date_updated: 2022-03-29T12:45:57Z
doi: 10.1088/1757-899X/1157/1/012004
intvolume: ' 1157'
language:
- iso: eng
page: '012004'
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'
- _id: '133'
name: 'TRR 285 - C: TRR 285 - Project Area C'
- _id: '146'
name: 'TRR 285 – C02: TRR 285 - Subproject C02'
publication: 'IOP Conference Series: Materials Science and Engineering'
status: public
title: Inverse parameter identification of an anisotropic plasticity model for sheet
metal
type: journal_article
user_id: '68518'
volume: 1157
year: '2021'
...
---
_id: '30643'
abstract:
- lang: eng
text: The multi-material design and the adaptability of a modern process chain require
joining connections with specifically adjustable mechanical, thermal, chemical,
or electrical properties. Previous considerations primarily focused on the mechanical
properties. The multitude of possible combinations of requirements, materials,
and component- and joining-geometry makes an empirical determination of these
joining properties for the clinching process impossible. Based on the established
and empirical procedure, there is currently no model that takes into account all
questions of joinability—i.e., the materials (suitability for joining), design
(security of joining), and production (joining possibility)—that allows a calculation
of the properties that can be achieved. It is therefore necessary to describe
the physical properties of the joint as a function of the three binding mechanisms—form
closure, force closure, and material closure—in relation to the application. This
approach illustrates the relationships along the causal chain “joint requirement-binding
mechanism-joining parameters” and improves the adaptability of the mechanical
joining technology. Geometrical properties of clinch connections of the combination
of aluminum and steel are compared in a metallographic cross-section. The mechanical
stress state of the rotationally symmetrical clinch points is qualified with a
torsion test and by measuring the electrical resistance in the base material,
in the clinch joint, and during the production cycle (after clinching, before
precipitation hardening and after precipitation hardening).
author:
- first_name: J.
full_name: Kalich, J.
last_name: Kalich
- first_name: U.
full_name: Füssel, U.
last_name: Füssel
citation:
ama: Kalich J, Füssel U. Influence of the production process on the binding mechanism
of clinched aluminum steel mixed compounds. Journal of Manufacturing and Materials
Processing. 2021;5:105. doi:10.3390/jmmp5040105
apa: Kalich, J., & Füssel, U. (2021). Influence of the production process on
the binding mechanism of clinched aluminum steel mixed compounds. Journal of
Manufacturing and Materials Processing, 5, 105. https://doi.org/10.3390/jmmp5040105
bibtex: '@article{Kalich_Füssel_2021, title={Influence of the production process
on the binding mechanism of clinched aluminum steel mixed compounds}, volume={5},
DOI={10.3390/jmmp5040105}, journal={Journal
of Manufacturing and Materials Processing}, author={Kalich, J. and Füssel, U.},
year={2021}, pages={105} }'
chicago: 'Kalich, J., and U. Füssel. “Influence of the Production Process on the
Binding Mechanism of Clinched Aluminum Steel Mixed Compounds.” Journal of Manufacturing
and Materials Processing 5 (2021): 105. https://doi.org/10.3390/jmmp5040105.'
ieee: 'J. Kalich and U. Füssel, “Influence of the production process on the binding
mechanism of clinched aluminum steel mixed compounds,” Journal of Manufacturing
and Materials Processing, vol. 5, p. 105, 2021, doi: 10.3390/jmmp5040105.'
mla: Kalich, J., and U. Füssel. “Influence of the Production Process on the Binding
Mechanism of Clinched Aluminum Steel Mixed Compounds.” Journal of Manufacturing
and Materials Processing, vol. 5, 2021, p. 105, doi:10.3390/jmmp5040105.
short: J. Kalich, U. Füssel, Journal of Manufacturing and Materials Processing 5
(2021) 105.
date_created: 2022-03-28T12:22:53Z
date_updated: 2022-03-29T12:41:44Z
doi: 10.3390/jmmp5040105
intvolume: ' 5'
language:
- iso: eng
page: '105'
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285'
- _id: '131'
name: 'TRR 285 - A: TRR 285 - Project Area A'
- _id: '138'
name: 'TRR 285 – A04: TRR 285 - Subproject A04'
publication: Journal of Manufacturing and Materials Processing
status: public
title: Influence of the production process on the binding mechanism of clinched aluminum
steel mixed compounds
type: journal_article
user_id: '68518'
volume: 5
year: '2021'
...
---
_id: '30644'
abstract:
- lang: eng
text: Computational homogenization is a powerful tool allowing to obtain homogenized
properties of materials on the macroscale from simulations of the underlying microstructure.
The response of the microstructure is, however, strongly affected by variations
in the microstructure geometry. In particular, we consider heterogeneous materials
with randomly distributed non-overlapping inclusions, which radii are also random.
In this work we extend the earlier proposed non-deterministic computational homogenization
framework to plastic materials, thereby increasing the model versatility and overall
realism. We apply novel soft periodic boundary conditions and estimate their effect
in case of non-periodic material microstructures. We study macroscopic plasticity
signatures like the macroscopic von-Mises stress and make useful conclusions for
further constitutive modeling. Simulations demonstrate the effect of the novel
boundary conditions, which significantly differ from the standard periodic boundary
conditions, and the large influence of parameter variations and hence the importance
of the stochastic modeling.
author:
- first_name: D.
full_name: Pivovarov, D.
last_name: Pivovarov
- first_name: J.
full_name: Mergheim, J.
last_name: Mergheim
- first_name: K.
full_name: Willner, K.
last_name: Willner
- first_name: P.
full_name: Steinmann, P.
last_name: Steinmann
citation:
ama: Pivovarov D, Mergheim J, Willner K, Steinmann P. Stochastic local FEM for computational
homogenization of heterogeneous materials exhibiting large plastic deformations.
Computational Mechanics. Published online 2021. doi:10.1007/s00466-021-02099-x
apa: Pivovarov, D., Mergheim, J., Willner, K., & Steinmann, P. (2021). Stochastic
local FEM for computational homogenization of heterogeneous materials exhibiting
large plastic deformations. Computational Mechanics. https://doi.org/10.1007/s00466-021-02099-x
bibtex: '@article{Pivovarov_Mergheim_Willner_Steinmann_2021, title={Stochastic local
FEM for computational homogenization of heterogeneous materials exhibiting large
plastic deformations}, DOI={10.1007/s00466-021-02099-x},
journal={Computational Mechanics}, author={Pivovarov, D. and Mergheim, J. and
Willner, K. and Steinmann, P.}, year={2021} }'
chicago: Pivovarov, D., J. Mergheim, K. Willner, and P. Steinmann. “Stochastic Local
FEM for Computational Homogenization of Heterogeneous Materials Exhibiting Large
Plastic Deformations.” Computational Mechanics, 2021. https://doi.org/10.1007/s00466-021-02099-x.
ieee: 'D. Pivovarov, J. Mergheim, K. Willner, and P. Steinmann, “Stochastic local
FEM for computational homogenization of heterogeneous materials exhibiting large
plastic deformations,” Computational Mechanics, 2021, doi: 10.1007/s00466-021-02099-x.'
mla: Pivovarov, D., et al. “Stochastic Local FEM for Computational Homogenization
of Heterogeneous Materials Exhibiting Large Plastic Deformations.” Computational
Mechanics, 2021, doi:10.1007/s00466-021-02099-x.
short: D. Pivovarov, J. Mergheim, K. Willner, P. Steinmann, Computational Mechanics
(2021).
date_created: 2022-03-28T12:24:19Z
date_updated: 2022-03-29T12:42:38Z
doi: 10.1007/s00466-021-02099-x
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: Computational Mechanics
status: public
title: Stochastic local FEM for computational homogenization of heterogeneous materials
exhibiting large plastic deformations
type: journal_article
user_id: '68518'
year: '2021'
...
---
_id: '30642'
abstract:
- lang: eng
text: Sheet metal forming as well as mechanical joining demand increasingly accurate
and efficient material modelling to capture large deformations, the inherent sheet
orthotropy and even process-induced damage, which is expected to be influential.
To account for large strains the additive logarithmic strain space is utilised
that enables a straightforward incorporation of plastic anisotropy, herein modelled
by a Hill48 yield function. A gradient-enhancement is used to equip the ductile
damage model with an internal length scale curing the damage-induced localisation.
An affine combination of the local and non-local softening variable is derived
enabling a more efficient single surface formulation for the regularised plasticity-damage
material model.
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. Anisotropic plasticity‐damage material
model for sheet metal — Regularised single surface formulation. PAMM. 2021;21.
doi:10.1002/pamm.202100068
apa: Friedlein, J., Mergheim, J., & Steinmann, P. (2021). Anisotropic plasticity‐damage
material model for sheet metal — Regularised single surface formulation. PAMM,
21. https://doi.org/10.1002/pamm.202100068
bibtex: '@article{Friedlein_Mergheim_Steinmann_2021, title={Anisotropic plasticity‐damage
material model for sheet metal — Regularised single surface formulation}, volume={21},
DOI={10.1002/pamm.202100068},
journal={PAMM}, author={Friedlein, J. and Mergheim, J. and Steinmann, P.}, year={2021}
}'
chicago: Friedlein, J., J. Mergheim, and P. Steinmann. “Anisotropic Plasticity‐damage
Material Model for Sheet Metal — Regularised Single Surface Formulation.” PAMM
21 (2021). https://doi.org/10.1002/pamm.202100068.
ieee: 'J. Friedlein, J. Mergheim, and P. Steinmann, “Anisotropic plasticity‐damage
material model for sheet metal — Regularised single surface formulation,” PAMM,
vol. 21, 2021, doi: 10.1002/pamm.202100068.'
mla: Friedlein, J., et al. “Anisotropic Plasticity‐damage Material Model for Sheet
Metal — Regularised Single Surface Formulation.” PAMM, vol. 21, 2021, doi:10.1002/pamm.202100068.
short: J. Friedlein, J. Mergheim, P. Steinmann, PAMM 21 (2021).
date_created: 2022-03-28T12:18:16Z
date_updated: 2022-03-29T12:40:59Z
doi: 10.1002/pamm.202100068
intvolume: ' 21'
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
status: public
title: Anisotropic plasticity‐damage material model for sheet metal — Regularised
single surface formulation
type: journal_article
user_id: '68518'
volume: 21
year: '2021'
...
---
_id: '20807'
author:
- first_name: Christian Roman
full_name: Bielak, Christian Roman
id: '34782'
last_name: Bielak
- first_name: Max
full_name: Böhnke, Max
id: '45779'
last_name: Böhnke
- 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: Bielak CR, Böhnke M, Bobbert M, Meschut G. Further development of a numerical
method for analyzing the load capacity of clinched joints in versatile process
chains. doi:10.25518/esaform21.4298
apa: Bielak, C. R., Böhnke, M., Bobbert, M., & Meschut, G. (n.d.). Further
development of a numerical method for analyzing the load capacity of clinched
joints in versatile process chains. ESAFORM 2021, Lüttich. https://doi.org/10.25518/esaform21.4298
bibtex: '@inproceedings{Bielak_Böhnke_Bobbert_Meschut, place={ESAFORM 2021}, title={Further
development of a numerical method for analyzing the load capacity of clinched
joints in versatile process chains}, DOI={10.25518/esaform21.4298},
author={Bielak, Christian Roman and Böhnke, Max and Bobbert, Mathias and Meschut,
Gerson} }'
chicago: Bielak, Christian Roman, Max Böhnke, Mathias Bobbert, and Gerson Meschut.
“Further Development of a Numerical Method for Analyzing the Load Capacity of
Clinched Joints in Versatile Process Chains.” ESAFORM 2021, n.d. https://doi.org/10.25518/esaform21.4298.
ieee: 'C. R. Bielak, M. Böhnke, M. Bobbert, and G. Meschut, “Further development
of a numerical method for analyzing the load capacity of clinched joints in versatile
process chains,” presented at the ESAFORM 2021, Lüttich, doi: 10.25518/esaform21.4298.'
mla: Bielak, Christian Roman, et al. Further Development of a Numerical Method
for Analyzing the Load Capacity of Clinched Joints in Versatile Process Chains.
doi:10.25518/esaform21.4298.
short: 'C.R. Bielak, M. Böhnke, M. Bobbert, G. Meschut, in: ESAFORM 2021, n.d.'
conference:
end_date: 2021 04 16
location: Lüttich
name: ESAFORM 2021
start_date: 2021 04 14
date_created: 2020-12-21T08:15:27Z
date_updated: 2022-03-29T12:55:57Z
department:
- _id: '157'
doi: 10.25518/esaform21.4298
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://popups.uliege.be/esaform21/index.php?id=3418
oa: '1'
place: ESAFORM 2021
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_status: submitted
status: public
title: Further development of a numerical method for analyzing the load capacity of
clinched joints in versatile process chains
type: conference
user_id: '34782'
year: '2021'
...
---
_id: '30648'
abstract:
- lang: eng
text: In clinching, the combinations of requirements, materials, component dimensions
and tools influence the resulting joint geometry and the resulting bonding mechanisms.
These in turn affect the property profile of the joint. For example, it is possible
to use different tools to flexibly adapt clinching points to the respective required
load regime. Clinching points dimensioned in this way can be geometrically similar,
but have different mechanical stress states, which leads to different properties
in terms of load-bearing behavior. Within the scope of this work, the clinching
process with different tools in optimal and compromise design and its effect on
the force and form-closure component, is investigated in a torsion test of the
clinched connection. Clinched steel sheets with two thicknesses and joining directions
are analyzed. Virtual experiments are carried out using finite element analyses
(FEA) of the joining process and are followed by a springback simulation. Subsequently,
the surface pressure between the two joining partners in the clinching points
is calculated on the basis of the results from the FEA and the transmittable moment
of the connection, as an indicator for the force-closure component, is determined.
Finally, the experimental and simulated data are compared and discussed.
author:
- first_name: C.
full_name: Steinfelder, C.
last_name: Steinfelder
- first_name: J.
full_name: Kalich, J.
last_name: Kalich
- first_name: A.
full_name: Brosius, A.
last_name: Brosius
- first_name: U.
full_name: Füssel, U.
last_name: Füssel
citation:
ama: 'Steinfelder C, Kalich J, Brosius A, Füssel U. Numerical and experimental investigation
of the transmission moment of clinching points. IOP Conference Series: Materials
Science and Engineering. 2021;1157:012003. doi:10.1088/1757-899x/1157/1/012003'
apa: 'Steinfelder, C., Kalich, J., Brosius, A., & Füssel, U. (2021). Numerical
and experimental investigation of the transmission moment of clinching points.
IOP Conference Series: Materials Science and Engineering, 1157,
012003. https://doi.org/10.1088/1757-899x/1157/1/012003'
bibtex: '@article{Steinfelder_Kalich_Brosius_Füssel_2021, title={Numerical and experimental
investigation of the transmission moment of clinching points}, volume={1157},
DOI={10.1088/1757-899x/1157/1/012003},
journal={IOP Conference Series: Materials Science and Engineering}, author={Steinfelder,
C. and Kalich, J. and Brosius, A. and Füssel, U.}, year={2021}, pages={012003}
}'
chicago: 'Steinfelder, C., J. Kalich, A. Brosius, and U. Füssel. “Numerical and
Experimental Investigation of the Transmission Moment of Clinching Points.” IOP
Conference Series: Materials Science and Engineering 1157 (2021): 012003.
https://doi.org/10.1088/1757-899x/1157/1/012003.'
ieee: 'C. Steinfelder, J. Kalich, A. Brosius, and U. Füssel, “Numerical and experimental
investigation of the transmission moment of clinching points,” IOP Conference
Series: Materials Science and Engineering, vol. 1157, p. 012003, 2021, doi:
10.1088/1757-899x/1157/1/012003.'
mla: 'Steinfelder, C., et al. “Numerical and Experimental Investigation of the Transmission
Moment of Clinching Points.” IOP Conference Series: Materials Science and Engineering,
vol. 1157, 2021, p. 012003, doi:10.1088/1757-899x/1157/1/012003.'
short: 'C. Steinfelder, J. Kalich, A. Brosius, U. Füssel, IOP Conference Series:
Materials Science and Engineering 1157 (2021) 012003.'
date_created: 2022-03-28T12:43:52Z
date_updated: 2022-03-29T15:38:11Z
doi: 10.1088/1757-899x/1157/1/012003
intvolume: ' 1157'
language:
- iso: eng
page: '012003'
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285'
- _id: '132'
name: 'TRR 285 - B: TRR 285 - Project Area B'
- _id: '131'
name: 'TRR 285 - A: TRR 285 - Project Area A'
- _id: '138'
name: 'TRR 285 – A04: TRR 285 - Subproject A04'
- _id: '140'
name: 'TRR 285 – B01: TRR 285 - Subproject B01'
publication: 'IOP Conference Series: Materials Science and Engineering'
status: public
title: Numerical and experimental investigation of the transmission moment of clinching
points
type: journal_article
user_id: '68518'
volume: 1157
year: '2021'
...
---
_id: '30652'
abstract:
- lang: eng
text: Clinching continuous fibre reinforced thermoplastic composites and metals
is challenging due to the low ductility of the composite material. Therefore,
a number of novel clinching technologies has been developed specifically for these
material combinations. A systematic overview of these advanced clinching methods
is given in the present paper. With a focus on process design, three selected
clinching methods suitable for different joining tasks are described in detail.
The clinching processes including equipment and tools, observed process phenomena
and the resultant material structure are compared. Process phenomena during joining
are explained in general and compared using computed tomography and micrograph
images for each process. In addition the load bearing behaviour and the corresponding
failure mechanisms are investigated by means of single-lap shear tests. Finally,
the new joining technologies are discussed regarding application relevant criteria.
author:
- first_name: B.
full_name: Gröger, B.
last_name: Gröger
- first_name: J.
full_name: Troschitz, J.
last_name: Troschitz
- first_name: J.
full_name: Vorderbrüggen, J.
last_name: Vorderbrüggen
- first_name: C.
full_name: Vogel, C.
last_name: Vogel
- first_name: R.
full_name: Kupfer, R.
last_name: Kupfer
- first_name: G.
full_name: Meschut, G.
last_name: Meschut
- first_name: M.
full_name: Gude, M.
last_name: Gude
citation:
ama: Gröger B, Troschitz J, Vorderbrüggen J, et al. Clinching of Thermoplastic Composites
and Metals—A Comparison of Three Novel Joining Technologies. Materials.
2021;14:2286. doi:10.3390/ma14092286X
apa: Gröger, B., Troschitz, J., Vorderbrüggen, J., Vogel, C., Kupfer, R., Meschut,
G., & Gude, M. (2021). Clinching of Thermoplastic Composites and Metals—A
Comparison of Three Novel Joining Technologies. Materials, 14, 2286.
https://doi.org/10.3390/ma14092286X
bibtex: '@article{Gröger_Troschitz_Vorderbrüggen_Vogel_Kupfer_Meschut_Gude_2021,
title={Clinching of Thermoplastic Composites and Metals—A Comparison of Three
Novel Joining Technologies}, volume={14}, DOI={10.3390/ma14092286X},
journal={Materials}, author={Gröger, B. and Troschitz, J. and Vorderbrüggen, J.
and Vogel, C. and Kupfer, R. and Meschut, G. and Gude, M.}, year={2021}, pages={2286}
}'
chicago: 'Gröger, B., J. Troschitz, J. Vorderbrüggen, C. Vogel, R. Kupfer, G. Meschut,
and M. Gude. “Clinching of Thermoplastic Composites and Metals—A Comparison of
Three Novel Joining Technologies.” Materials 14 (2021): 2286. https://doi.org/10.3390/ma14092286X.'
ieee: 'B. Gröger et al., “Clinching of Thermoplastic Composites and Metals—A
Comparison of Three Novel Joining Technologies,” Materials, vol. 14, p.
2286, 2021, doi: 10.3390/ma14092286X.'
mla: Gröger, B., et al. “Clinching of Thermoplastic Composites and Metals—A Comparison
of Three Novel Joining Technologies.” Materials, vol. 14, 2021, p. 2286,
doi:10.3390/ma14092286X.
short: B. Gröger, J. Troschitz, J. Vorderbrüggen, C. Vogel, R. Kupfer, G. Meschut,
M. Gude, Materials 14 (2021) 2286.
date_created: 2022-03-28T12:51:22Z
date_updated: 2022-03-29T15:48:59Z
department:
- _id: '157'
doi: 10.3390/ma14092286X
intvolume: ' 14'
language:
- iso: eng
page: '2286'
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: Materials
status: public
title: Clinching of Thermoplastic Composites and Metals—A Comparison of Three Novel
Joining Technologies
type: journal_article
user_id: '68518'
volume: 14
year: '2021'
...
---
_id: '30698'
author:
- first_name: B.
full_name: Gröger, B.
last_name: Gröger
- first_name: D.
full_name: Köhler, D.
last_name: Köhler
- first_name: J.
full_name: Vorderbrüggen, J.
last_name: Vorderbrüggen
- first_name: J.
full_name: Troschitz, J.
last_name: Troschitz
- first_name: R.
full_name: Kupfer, R.
last_name: Kupfer
- first_name: G.
full_name: Meschut, G.
last_name: Meschut
- first_name: M.
full_name: Gude, M.
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. Production Engineering. Published online 2021. doi:10.1007/s11740-021-01091-x
apa: Gröger, B., Köhler, D., Vorderbrüggen, J., Troschitz, J., Kupfer, R., Meschut,
G., & Gude, M. (2021). Computed tomography investigation of the material structure
in clinch joints in aluminium fibre-reinforced thermoplastic sheets. Production
Engineering. https://doi.org/10.1007/s11740-021-01091-x
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}, DOI={10.1007/s11740-021-01091-x},
journal={Production Engineering}, author={Gröger, B. and Köhler, D. and Vorderbrüggen,
J. and Troschitz, J. and Kupfer, R. and Meschut, G. and Gude, M.}, year={2021}
}'
chicago: Gröger, B., D. Köhler, J. Vorderbrüggen, J. Troschitz, R. Kupfer, G. Meschut,
and M. Gude. “Computed Tomography Investigation of the Material Structure in Clinch
Joints in Aluminium Fibre-Reinforced Thermoplastic Sheets.” Production Engineering,
2021. https://doi.org/10.1007/s11740-021-01091-x.
ieee: 'B. Gröger et al., “Computed tomography investigation of the material
structure in clinch joints in aluminium fibre-reinforced thermoplastic sheets,”
Production Engineering, 2021, doi: 10.1007/s11740-021-01091-x.'
mla: Gröger, B., et al. “Computed Tomography Investigation of the Material Structure
in Clinch Joints in Aluminium Fibre-Reinforced Thermoplastic Sheets.” Production
Engineering, 2021, doi:10.1007/s11740-021-01091-x.
short: B. Gröger, D. Köhler, J. Vorderbrüggen, J. Troschitz, R. Kupfer, G. Meschut,
M. Gude, Production Engineering (2021).
date_created: 2022-03-29T09:15:36Z
date_updated: 2023-01-02T11:18:51Z
department:
- _id: '157'
- _id: '630'
doi: 10.1007/s11740-021-01091-x
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'
- _id: '133'
name: 'TRR 285 - C: TRR 285 - Project Area C'
- _id: '148'
name: 'TRR 285 – C04: TRR 285 - Subproject C04'
publication: Production Engineering
status: public
title: Computed tomography investigation of the material structure in clinch joints
in aluminium fibre-reinforced thermoplastic sheets
type: journal_article
user_id: '14931'
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: '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: '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'
...