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

Abel Cherouat (1) , Houman Borouchaki (1) , Khemais Saanouni (1) , Patrick Laug

1 LASMIS - Laboratoire des Systèmes Mécaniques et d'Ingénierie Simultanée

Ductile damage often occurs during metal forming processes due to the large thermo-elasto (visco) plastic flow localisation. 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.

Domaines: Mécanique des matériaux [physics.class-ph]

Abel Cherouat, Houman Borouchaki, Khemais Saanouni, Patrick Laug. Numerical Methodology for Metal Forming Processes Using Elastoplastic Model with Damage Occurrence. Journal of Materials Science and Technology, 2009. ⟨hal-02279728⟩