Numerical Methodology for Metal Forming Processes Using Elastoplastic Model with Damage Occurrence

材料科学技术（英文）, 2006, 22(2): 279-283.

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1.LASMIS-CNRS FRE 2719, University of Technology of Troyes, BP 2060-10010, Troyes, France

2.LASMIS-CNRS FRE 2719, University of Technology of Troyes, BP 2060-10010, Troyes, France

3.LASMIS-CNRS FRE 2719, University of Technology of Troyes, BP 2060-10010, Troyes, France

4.INRIA, Rocquencourt BP 105-78153, Le Chesnay, France

Numerical Methodology for Metal Forming Processes Using Elastoplastic Model with Damage Occurrence

Ductile damage often occurs during metal forming processes due to the large thermo-elasto (visco) plastic flow Iocalisation. This paper presents a numerical methodology, which aims to virtually improve any metal forming processes. The methodology is based on elastoplastic constitutive equations accounting for nonlinear mixed isotropic and kinematic hardening strongly coupled with isotropic ductile damage. An adaptive remeshing scheme based on geometrical and physical error estimates including a kill element procedure is used. Some numerical results are presented to show the capability of the model to predict the damage initiation and growth during the metal forming processes.

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Numerical Methodology for Metal Forming Processes Using Elastoplastic Model with Damage Occurrence

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