A nonlinear numerical analysis for metal-forming process using the rigid-(visco)plastic element-free Galerkin method

作者：Yanjin Guan^*; Xin Wu; Zhao Guoqun; Ping Lu

来源：International Journal of Advanced Manufacturing Technology, 2009, 42(1-2): 83-92.

DOI：10.1007/s00170-008-1585-3

• Element-free Galerkin
• Meshless method
• Rigid-(visco) plasticity
• Metal forming
• Process simulation

A new approach for isothermal metal-forming process, which is based on the element-free Galerkin (EFG) method for incompressible rigid-(visco)plastic material models, is put forward. The meshless analysis of the non-steady plastic deformation processes with arbitrarily shaped dies is realized. A nail-shaped part-forming process based on the meshless method is analyzed numerically. The flow patterns and the effective strain and effective strain rate obtained by the EFG and finite element methods (FEM) are studied. Obviously, the EFG simulation results are in good agreement with FEM results. It shows that the model and key techniques are effective and accurate. Meanwhile, the influence of the node number on analytical accuracy is remarkable during EFG simulation. The more the node number is, the more accurate the analysis result is. The volume loss decreases with increase of the node number.

• 出版日期2009-5
• 单位山东大学