Sectional analysis of forming processes for aluminium-alloy sheet metals

摘要

The sectional analysis of the formign processes for aluminum-alloy sheet metals was perfomed.The 2-dimensional rigid-viscoplastic FEM formulation based on the bending-augmented membrane theory as well as the anisotopic yield criteria was introduced.For modeling the anomalous behavior of aluminum alloy sheet metals,Barlat's strain rate potential and Hill's non-quadratic yield theory with an isotropic hardening rule were employed.