---
_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'
...