J Mater Sci Technol ›› 2006, Vol. 22 ›› Issue (02): 279-283.

• Research Articles • Previous Articles     Next Articles

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

A.Cherouat, H.Borouchaki, K.Saanouni, P.Laug   

  1. LASMIS-CNRS FRE 2719, University of Technology of Troyes, BP 2060-10010, Troyes, France
  • Received:2005-05-31 Revised:2005-08-31 Online:2006-03-28 Published:2009-10-10
  • Contact: A.Cherouat

Abstract: 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.

Key words: Finite elastoplasticity, Ductile damage, Error estimation, Adaptive remeshing...