Simulation of 3D Sheet Metal Forming Processes by using
Finite Element Method
Shi Yunsheng
(Zhejiang Uni. 576 Hangzhou 310027)
Dong Jingxiang
(Department of computer Zhejiang Uni.)

Abstract: Based on the finite strain theory, the rigid plastic finite element model for analysing 3D sheet metal forming processes was set up. In the model, Update-Lagrange description in flowing coordenate system is employed, assuming equal strain hardening in all direction, and taking the thickness anisotropy into consideration. The coulomb's friction law was used to characterize the friction between workpiece and die to improve convergence. To simplify calculation, the membrane element was used. A software was established according to the proposed model.
Keywords: finite element method, 3d sheet metal forming.