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research article

On the benefits of a stress criterion for the simulation of cup drawing process

Jansen, Yann
•
Loge, Roland E.  
•
Manach, Pierre-Yves
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2018
International Journal Of Material Forming

Experimental and numerical cup drawing process has been investigated on 0.65 mm zinc sheets. The cup exhibits anisotropic earrings due to the material microstructure. The material formability is studied through elliptical bulge tests in the rolling, diagonal and transverse direction. High anisotropy of the formability is observed. The numerical simulation of cup drawing is then made and demonstrates the correct fitting with experimental results. A stress formability criterion developed by Jansen et al. [14] is then implemented into a finite element method software and applied to predict the material rupture observed for some process conditions. The risk zone of the cup is subjected to some strain path changes according to the simulation whereas the strain value does not explain the rupture according to the experimental formability measured by the bulge tests. It has been shown that the rupture is due to some critical stresses, which are reached in the risk zone of the cup. The use of the stress criterion and its non-dependence on the strain path change allows the fracture prediction. Finally, the numerical fracture propagation by the "kill element method", as briefly discussed by Bouchard et al. [4], is used and shows a good similarity with the experience.

  • Details
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Type
research article
DOI
10.1007/s12289-016-1313-8
Web of Science ID

WOS:000412547400005

Author(s)
Jansen, Yann
Loge, Roland E.  
Manach, Pierre-Yves
Carbuccia, Gabriel
Milesi, Marc
Date Issued

2018

Publisher

Springer France

Published in
International Journal Of Material Forming
Volume

10

Issue

5

Start page

707

End page

716

Subjects

Anisotropy

•

Zinc

•

Cup drawing

•

Stress criterion

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LMTM  
Available on Infoscience
November 8, 2017
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/142024
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