大变形有限元中二维网格自动重分技术  

Automatic 2D remeshing techniques with finite element analysis of large deformation

作　　者：郭晓霞[1] 刘建生[1] 陈慧琴[1] 周贤宾[2] 

机构地区：[1]太原重型机械学院材料分院,太原030024 [2]北京航空航天大学,北京100083

出　　处：《塑性工程学报》2002年第3期20-24,共5页Journal of Plasticity Engineering

基　　金：山西省自然科学基金资助项目 (2 0 0 0 10 5 2 )

摘　　要：提出了一种自动的二维四边形网格重分技术 ,其中包括网格重分的判定、新网格的生成和变形场量的传递。该技术可与刚塑性有限元程序和图形处理器集成为一个完整的系统 ,应用于复杂塑性成形工艺的模拟。利用系统对火车车轮成形中的镦粗和预成形进行了模拟 ,结果表明 ,该网格重分技术不仅可以使模拟实现自动化 。In the paper, the techniques in automatic remeshing of 2D quadrilateral elements are described. The remeshing procedures including the following steps: the remeshing decision, the new mesh generation and mapping of current state variables. The remeshing techniques are integrated with 2D rigid-plastic FEM program and graphics processor(AutoCAD)into a whole system, which is applied for the simulation of complicated plastic forming process. Upset and preform processes of railroad wheel are simulated by using the integerated system. The results of simulation show that the presented techniques not only automate the simulation but also keep a high precise.

关 键 词：网格自动重分 金属 四边形网格 塑性成形 有限元程序 二维网格 

分 类 号：TG301[金属学及工艺—金属压力加工] O241.82[理学—计算数学]