The study on steel elliptical cup drawing based on finite element analysis
Jiansheng Xia1, Shasha Dou2
1Yancheng Institute of Technology, Yancheng City, Jiangsu Province, China
2Nanjing University of Aeronautics & Astronautics, Nanjing City, Jiangsu Province, China
The sheet metal elliptical cup drawing is a complex process, Under the assumption of Prandtl-Reuss flow rule and von Mises yield criterion, the incremental Elasto-plastic large deformation finite element model was established based on the Updated Lagrangian Formulation (ULF).The Elasto-plastic conversions of boundary and deformation are reduced with rmin rule. The friction phenomenon of slippage and viscosity at the boundary interface is revised with increment of revision Coulomb rule. The increment rules are led into the whole stiffness matrix, and derived out the stiffness equation. The studies show that the influence on steel elliptical cup drawing deformation is influenced by die structure and parameter. The dates show that finite element simulation and experimental result have a good consistency.