Incorporating Asymmetric Hardening Behavior In Modeling The Cold Expansion Process Of Az31B Sheet

Abstract

The Variable Material Properties (VMP) method of elastoplastic analysis for axisymmetric problems is extended to the applications of the cold expansion problem for magnesium sheets exhibiting asymmetric hardening behavior. To investigate the effect of hardening asymmetry in the stressstrain results, a detailed 3D finite element (FE) model with symmetric material properties was also generated for the cold expansion problem. Comparison between the results of the VMP and the FE model revealed the significant effect of hardening asymmetry.