MESHFREE METHOD BASED ON POINT COLLOCATION FOR METAL FORMING SIMULATION

金属学报(英文版), 2006, 19(2): 79-84.

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1.Department of Plasticity Forming Engineering, Shanghai Jiaotong University,Shanghai 200030, China

2.Department of Plasticity Forming Engineering, Shanghai Jiaotong University,Shanghai 200030, China

3.Department of Plasticity Forming Engineering, Shanghai Jiaotong University,Shanghai 200030, China

基金项目: 中国科学院资助项目(50275059)

MESHFREE METHOD BASED ON POINT COLLOCATION FOR METAL FORMING SIMULATION

A meshfree method based on reproducing kernel approximation and point collocation is presented for analysis of metal ring compression. The point collocation method is a true meshfree method without the employment of a background mesh. It is shown that, in a point collocation approach,the remesh problem because of the mesh distortion in FEM (finite element method) and the low efficiency in Galerkin-based meshfree method are avoided. The corrected kernel functions are introduced to the stabilization of free-surface boundary conditions. The solution of symmetric ring compression problem is compared with a conventional finite element solution, and reasonable results have been obtained.

参考文献

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MESHFREE METHOD BASED ON POINT COLLOCATION FOR METAL FORMING SIMULATION

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