Details
| Original language | English |
|---|---|
| Title of host publication | Sheet Metal 2023 - 20th International Conference on Sheet Metal |
| Editors | Marion Merklein, Hinnerk Hagenah, Joost R. Duflou, Livan Fratini, Fabrizio Micari, Paulo Martins, Gerson Meschut |
| Pages | 329-336 |
| Number of pages | 8 |
| Publication status | Published - 2023 |
| Event | 20th International Conference on Sheet Metal, SHEMET 2023 - Erlangen, Germany Duration: 2 Apr 2023 → 5 Apr 2023 |
Publication series
| Name | Materials Research Proceedings |
|---|---|
| Volume | 25 |
| ISSN (Print) | 2474-3941 |
| ISSN (electronic) | 2474-395X |
Abstract
In the automotive sector, the demand for high crash safety and lightweight construction has led to an increased use of steels with higher strengths. However, the rising number of varying materials with different strengths and ductilities lead to an increasing complexity in productionmaking it more challenging to ensure robust processes. Therefore, the focus of current researches still lays on the further development and extension of forming processes to enable high productivity and reliable production. A powerful tool for an efficient optimisation and extension of forming processes is the Finite Element Method (FEM), which offers time-and cost saving potentials in the design phase. In deep drawing, the use of a counter punch offers the possibility oextending the process limits. By superimposing compressive stresses on the workpiece, the initiation of cracks can be delayed, thus higher drawing ratios can be achieved. The aim of this research is therefore the numerical investigation of a deep drawing process with a counter punch to analyse the influence on the crack initiation and identify optimisation potentials for the processFor this cause, the applied force as well as the position and geometry of the counter punch are varied and the influence on fracture initiation is evaluated. It is found that the applied force on the counter punch is the major influencing factor for crack initiation. Furthermore, it was concluded that the contact between the counter punch and the workpiece should be applied as soon as the bottom of the cup is shaped. A further improvement can be achieved if the counter punch is geometrically adapted to the bottom of the workpiece.
Keywords
- Fracture Analysis, High Strength Steel, Process Extension
ASJC Scopus subject areas
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Sheet Metal 2023 - 20th International Conference on Sheet Metal. ed. / Marion Merklein; Hinnerk Hagenah; Joost R. Duflou; Livan Fratini; Fabrizio Micari; Paulo Martins; Gerson Meschut. 2023. p. 329-336 (Materials Research Proceedings; Vol. 25).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Numerical analyses of the influence of a counter punch during deep drawing
AU - Behrens, Bernd Arno
AU - Rosenbusch, Daniel
AU - Wester, Hendrik
AU - Weichenhain, Joshua
AU - Althaus, Philipp
N1 - Funding Information: The results presented were obtained in the project “Extension of the forming limits during deep drawing by additional force transmission” – 212270168. The authors thank the German Research Foundation (Deutsche Forschungsgemeinschaft, DFG) for their financial support.
PY - 2023
Y1 - 2023
N2 - In the automotive sector, the demand for high crash safety and lightweight construction has led to an increased use of steels with higher strengths. However, the rising number of varying materials with different strengths and ductilities lead to an increasing complexity in productionmaking it more challenging to ensure robust processes. Therefore, the focus of current researches still lays on the further development and extension of forming processes to enable high productivity and reliable production. A powerful tool for an efficient optimisation and extension of forming processes is the Finite Element Method (FEM), which offers time-and cost saving potentials in the design phase. In deep drawing, the use of a counter punch offers the possibility oextending the process limits. By superimposing compressive stresses on the workpiece, the initiation of cracks can be delayed, thus higher drawing ratios can be achieved. The aim of this research is therefore the numerical investigation of a deep drawing process with a counter punch to analyse the influence on the crack initiation and identify optimisation potentials for the processFor this cause, the applied force as well as the position and geometry of the counter punch are varied and the influence on fracture initiation is evaluated. It is found that the applied force on the counter punch is the major influencing factor for crack initiation. Furthermore, it was concluded that the contact between the counter punch and the workpiece should be applied as soon as the bottom of the cup is shaped. A further improvement can be achieved if the counter punch is geometrically adapted to the bottom of the workpiece.
AB - In the automotive sector, the demand for high crash safety and lightweight construction has led to an increased use of steels with higher strengths. However, the rising number of varying materials with different strengths and ductilities lead to an increasing complexity in productionmaking it more challenging to ensure robust processes. Therefore, the focus of current researches still lays on the further development and extension of forming processes to enable high productivity and reliable production. A powerful tool for an efficient optimisation and extension of forming processes is the Finite Element Method (FEM), which offers time-and cost saving potentials in the design phase. In deep drawing, the use of a counter punch offers the possibility oextending the process limits. By superimposing compressive stresses on the workpiece, the initiation of cracks can be delayed, thus higher drawing ratios can be achieved. The aim of this research is therefore the numerical investigation of a deep drawing process with a counter punch to analyse the influence on the crack initiation and identify optimisation potentials for the processFor this cause, the applied force as well as the position and geometry of the counter punch are varied and the influence on fracture initiation is evaluated. It is found that the applied force on the counter punch is the major influencing factor for crack initiation. Furthermore, it was concluded that the contact between the counter punch and the workpiece should be applied as soon as the bottom of the cup is shaped. A further improvement can be achieved if the counter punch is geometrically adapted to the bottom of the workpiece.
KW - Fracture Analysis
KW - High Strength Steel
KW - Process Extension
UR - http://www.scopus.com/inward/record.url?scp=85152686482&partnerID=8YFLogxK
U2 - 10.21741/9781644902417-41
DO - 10.21741/9781644902417-41
M3 - Conference contribution
AN - SCOPUS:85152686482
SN - 9781644902400
T3 - Materials Research Proceedings
SP - 329
EP - 336
BT - Sheet Metal 2023 - 20th International Conference on Sheet Metal
A2 - Merklein, Marion
A2 - Hagenah, Hinnerk
A2 - Duflou, Joost R.
A2 - Fratini, Livan
A2 - Micari, Fabrizio
A2 - Martins, Paulo
A2 - Meschut, Gerson
T2 - 20th International Conference on Sheet Metal, SHEMET 2023
Y2 - 2 April 2023 through 5 April 2023
ER -