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International Journal of Forming Processes
1292-7775
Publication suspended
 

 ARTICLE VOL 5/2-3-4 - 2002  - pp.423-432  - doi:10.3166/ijfp.5.423-432
TITLE
Modeling of Thin Sheet Blanking with a Micromechanical Approach Application of the MTS Model

ABSTRACT

The optimisation of the manufacturing process of metal sheets requires a deep understanding of the material behaviour. In the case of thin sheet blanking, the Mechanical Threshold Stress or MTS model (Follansbee and Kocks, 1988) is shown to be of great interest to capture the material behaviour for a large range of strain rates. These are namely involved during the blanking process, depending of the stroke rates and the sheet thickness. The Mechanical Threshold Stress model is implemented in the Finite Element code ABAQUS/Explicit. For a full simulation of the blanking process, we combined the MTS model with a critical strain based rupture criterion. Results obtained for a OFHC copper thin sheet are presented and discussed.

AUTEUR(S)
Christophe POIZAT, Christophe HUSSON, Said AHZI, Nadia BAHLOULI, Laurent MERLE

KEYWORDS
Blanking, thin sheet, MTS model, finite element simulation.

LANGUE DE L'ARTICLE
Anglais

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