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Meshfree method based on point collocation for metal forming simulation
  • 期刊名称:Acta Metallurgica Sinica
  • 时间:0
  • 作者或编辑:3448
  • 第一作者所属机构:Shanghai Jiao Tong University
  • 页码:(已接受)
  • 语言:中文
  • 分类:TG3[金属学及工艺—金属压力加工]
  • 作者机构:[1]Department of Plasticity Forming Engineering, Shanghai Jiaotong University, Shanghai 200030, China
  • 相关基金:Acknowledgements--This work was supported by the National Natural Science Foundation of China (No. 50275059).
  • 相关项目:微细塑性成形方法及计算机模拟技术研究
中文摘要:

一个网孔基于复制,核近似和点搭配为金属戒指压缩的分析被介绍的免费方法。点搭配方法是一个真网孔没有一个背景网孔的雇用的免费方法。它被看那,在一条点搭配途径,重新协调问题因为网孔失真在女性(有限元素方法) 并且在基于 Galerkin 的网孔的低效率免费方法被避免。改正的内核函数被介绍给免费表面的边界条件的稳定。对称的戒指压缩问题的答案与一个常规有限元素答案相比,并且合理结果被获得了。

英文摘要:

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.

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