DEVELOPMENT ON CRYSTAL PLASTICITY FINITE ELEMENT MODELING IN METAL FORMING

Abstract

The theory background and applications of crystal plasticity finite element modeling (CPFEM) in metal forming are reviewed as well as domestic research condition in the field of CPFEM. Finally, problems and emphasis on CPFEM are suggested. Crystal plasticity theory stemming from 1920s includes single crystal constitutive theory and polycrystal constitutive theory, which disclosures laws of material deforming. Finite element method (FEM) beginning thirty years ago has also been increasingly an effective tool for solving theory equations of material forming. As a powerful modeling tool bonding crystal plasticity with FEM organically, CPFEM has been applied in simulating material microstructures and different mechanical responses, which is more and more focused by material and mechanical researchers. However, both the theory and applications of CPFEM are not perfect. The future research emphasis of CPFEM theory is to build a systematic theory framework to predict many mechanical responses for plasticity deformation caused by both slip and twinning mechanism. Applications focus on other properties and variables related to texture. CPFEM can deepen one's understanding to material forming law and propel the theory development of crystal plasticity.