MESHFREE METHOD BASED ON POINT COLLOCATION FOR METAL FORMING SIMULATION
来源期刊：Acta Metallurgica Sinica2006年第2期
论文作者：X.H. Dong H.Y. Wen X.Y. Ruan
Key words：meshfree method; RKPM (reproducing kernel particle method); point collocation; metal forming; frictional contact;
Abstract: 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.
X.H. Dong1，H.Y. Wen1，X.Y. Ruan1
(1.Department of Plasticity Forming Engineering, Shanghai Jiaotong University,Shanghai 200030, China)
Abstract: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.
Key words:meshfree method; RKPM (reproducing kernel particle method); point collocation; metal forming; frictional contact;
【全文内容正在添加中】
