---
_id: '30696'
author:
- first_name: C.
full_name: Zirngibl, C.
last_name: Zirngibl
- first_name: B.
full_name: Schleich, B.
last_name: Schleich
- first_name: S.
full_name: Wartzack, S.
last_name: Wartzack
citation:
ama: Zirngibl C, Schleich B, Wartzack S. Approach for the automated and data-based
design of mechanical joints. Proceedings of the Design Society. 2021;1:521.
doi:10.1017/pds.2021.52
apa: Zirngibl, C., Schleich, B., & Wartzack, S. (2021). Approach for the automated
and data-based design of mechanical joints. Proceedings of the Design Society,
1, 521. https://doi.org/10.1017/pds.2021.52
bibtex: '@article{Zirngibl_Schleich_Wartzack_2021, title={Approach for the automated
and data-based design of mechanical joints}, volume={1}, DOI={10.1017/pds.2021.52},
journal={Proceedings of the Design Society}, author={Zirngibl, C. and Schleich,
B. and Wartzack, S.}, year={2021}, pages={521} }'
chicago: 'Zirngibl, C., B. Schleich, and S. Wartzack. “Approach for the Automated
and Data-Based Design of Mechanical Joints.” Proceedings of the Design Society
1 (2021): 521. https://doi.org/10.1017/pds.2021.52.'
ieee: 'C. Zirngibl, B. Schleich, and S. Wartzack, “Approach for the automated and
data-based design of mechanical joints,” Proceedings of the Design Society,
vol. 1, p. 521, 2021, doi: 10.1017/pds.2021.52.'
mla: Zirngibl, C., et al. “Approach for the Automated and Data-Based Design of Mechanical
Joints.” Proceedings of the Design Society, vol. 1, 2021, p. 521, doi:10.1017/pds.2021.52.
short: C. Zirngibl, B. Schleich, S. Wartzack, Proceedings of the Design Society
1 (2021) 521.
date_created: 2022-03-29T09:12:58Z
date_updated: 2023-01-02T11:19:35Z
department:
- _id: '630'
doi: 10.1017/pds.2021.52
intvolume: ' 1'
language:
- iso: eng
page: '521'
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'
publication: Proceedings of the Design Society
status: public
title: Approach for the automated and data-based design of mechanical joints
type: journal_article
user_id: '14931'
volume: 1
year: '2021'
...
---
_id: '30700'
author:
- first_name: C.
full_name: Zirngibl, C.
last_name: Zirngibl
- first_name: F.
full_name: Dworschak, F.
last_name: Dworschak
- first_name: B.
full_name: Schleich, B.
last_name: Schleich
- first_name: S.
full_name: Wartzack, S.
last_name: Wartzack
citation:
ama: Zirngibl C, Dworschak F, Schleich B, Wartzack S. Application of reinforcement
learning for the optimization of clinch joint characteristics. Production Engineering.
Published online 2021. doi:10.1007/s11740-021-01098-4
apa: Zirngibl, C., Dworschak, F., Schleich, B., & Wartzack, S. (2021). Application
of reinforcement learning for the optimization of clinch joint characteristics.
Production Engineering. https://doi.org/10.1007/s11740-021-01098-4
bibtex: '@article{Zirngibl_Dworschak_Schleich_Wartzack_2021, title={Application
of reinforcement learning for the optimization of clinch joint characteristics},
DOI={10.1007/s11740-021-01098-4},
journal={Production Engineering}, author={Zirngibl, C. and Dworschak, F. and Schleich,
B. and Wartzack, S.}, year={2021} }'
chicago: Zirngibl, C., F. Dworschak, B. Schleich, and S. Wartzack. “Application
of Reinforcement Learning for the Optimization of Clinch Joint Characteristics.”
Production Engineering, 2021. https://doi.org/10.1007/s11740-021-01098-4.
ieee: 'C. Zirngibl, F. Dworschak, B. Schleich, and S. Wartzack, “Application of
reinforcement learning for the optimization of clinch joint characteristics,”
Production Engineering, 2021, doi: 10.1007/s11740-021-01098-4.'
mla: Zirngibl, C., et al. “Application of Reinforcement Learning for the Optimization
of Clinch Joint Characteristics.” Production Engineering, 2021, doi:10.1007/s11740-021-01098-4.
short: C. Zirngibl, F. Dworschak, B. Schleich, S. Wartzack, Production Engineering
(2021).
date_created: 2022-03-29T09:19:07Z
date_updated: 2023-01-02T11:19:55Z
department:
- _id: '630'
doi: 10.1007/s11740-021-01098-4
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'
publication: Production Engineering
status: public
title: Application of reinforcement learning for the optimization of clinch joint
characteristics
type: journal_article
user_id: '14931'
year: '2021'
...
---
_id: '30701'
author:
- first_name: D.
full_name: Römisch, D.
last_name: Römisch
- first_name: J.
full_name: Popp, J.
last_name: Popp
- first_name: D.
full_name: Drummer, D.
last_name: Drummer
- first_name: M.
full_name: Merklein, M.
last_name: Merklein
citation:
ama: Römisch D, Popp J, Drummer D, Merklein M. Joining of CFRT-steel hybrid parts
via hole-forming and subsequent pin caulking. Production Engineering. Published
online 2021. doi:10.1007/s11740-021-01093-9
apa: Römisch, D., Popp, J., Drummer, D., & Merklein, M. (2021). Joining of CFRT-steel
hybrid parts via hole-forming and subsequent pin caulking. Production Engineering.
https://doi.org/10.1007/s11740-021-01093-9
bibtex: '@article{Römisch_Popp_Drummer_Merklein_2021, title={Joining of CFRT-steel
hybrid parts via hole-forming and subsequent pin caulking}, DOI={10.1007/s11740-021-01093-9},
journal={Production Engineering}, author={Römisch, D. and Popp, J. and Drummer,
D. and Merklein, M.}, year={2021} }'
chicago: Römisch, D., J. Popp, D. Drummer, and M. Merklein. “Joining of CFRT-Steel
Hybrid Parts via Hole-Forming and Subsequent Pin Caulking.” Production Engineering,
2021. https://doi.org/10.1007/s11740-021-01093-9.
ieee: 'D. Römisch, J. Popp, D. Drummer, and M. Merklein, “Joining of CFRT-steel
hybrid parts via hole-forming and subsequent pin caulking,” Production Engineering,
2021, doi: 10.1007/s11740-021-01093-9.'
mla: Römisch, D., et al. “Joining of CFRT-Steel Hybrid Parts via Hole-Forming and
Subsequent Pin Caulking.” Production Engineering, 2021, doi:10.1007/s11740-021-01093-9.
short: D. Römisch, J. Popp, D. Drummer, M. Merklein, Production Engineering (2021).
date_created: 2022-03-29T09:21:36Z
date_updated: 2023-01-02T11:20:14Z
department:
- _id: '630'
doi: 10.1007/s11740-021-01093-9
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: Production Engineering
status: public
title: Joining of CFRT-steel hybrid parts via hole-forming and subsequent pin caulking
type: journal_article
user_id: '14931'
year: '2021'
...
---
_id: '30697'
author:
- first_name: R.
full_name: Lafarge, R.
last_name: Lafarge
- first_name: A.
full_name: Wolf, A.
last_name: Wolf
- first_name: C.
full_name: Guilleaume, C.
last_name: Guilleaume
- first_name: A.
full_name: Brosius, A.
last_name: Brosius
citation:
ama: Lafarge R, Wolf A, Guilleaume C, Brosius A. A New Non-destructive Testing Method
Applied to Clinching. Minerals, Metals and Materials Series. Published
online 2021:1461. doi:10.1007/978-3-030-75381-8_121
apa: Lafarge, R., Wolf, A., Guilleaume, C., & Brosius, A. (2021). A New Non-destructive
Testing Method Applied to Clinching. Minerals, Metals and Materials Series,
1461. https://doi.org/10.1007/978-3-030-75381-8_121
bibtex: '@article{Lafarge_Wolf_Guilleaume_Brosius_2021, title={A New Non-destructive
Testing Method Applied to Clinching}, DOI={10.1007/978-3-030-75381-8_121},
journal={Minerals, Metals and Materials Series}, author={Lafarge, R. and Wolf,
A. and Guilleaume, C. and Brosius, A.}, year={2021}, pages={1461} }'
chicago: Lafarge, R., A. Wolf, C. Guilleaume, and A. Brosius. “A New Non-Destructive
Testing Method Applied to Clinching.” Minerals, Metals and Materials Series,
2021, 1461. https://doi.org/10.1007/978-3-030-75381-8_121.
ieee: 'R. Lafarge, A. Wolf, C. Guilleaume, and A. Brosius, “A New Non-destructive
Testing Method Applied to Clinching,” Minerals, Metals and Materials Series,
p. 1461, 2021, doi: 10.1007/978-3-030-75381-8_121.'
mla: Lafarge, R., et al. “A New Non-Destructive Testing Method Applied to Clinching.”
Minerals, Metals and Materials Series, 2021, p. 1461, doi:10.1007/978-3-030-75381-8_121.
short: R. Lafarge, A. Wolf, C. Guilleaume, A. Brosius, Minerals, Metals and Materials
Series (2021) 1461.
date_created: 2022-03-29T09:14:12Z
date_updated: 2023-01-02T11:20:45Z
department:
- _id: '630'
doi: 10.1007/978-3-030-75381-8_121
language:
- iso: eng
page: '1461'
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: Minerals, Metals and Materials Series
status: public
title: A New Non-destructive Testing Method Applied to Clinching
type: journal_article
user_id: '14931'
year: '2021'
...
---
_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'
...