组合网格法在搅拌摩擦焊接数值模拟中的应用  

Application of Composite Grid Method in Numerical Simulation of Friction Stir Welding

作　　者：陈文平[1] 马昌凤[1] 蒋利华[2] 

机构地区：[1]福建师范大学数学与计算机科学学院,福建福州350007 [2]安徽理工大学理学院,安徽淮南232001

出　　处：《安徽理工大学学报（自然科学版）》2009年第2期57-61,共5页Journal of Anhui University of Science and Technology:Natural Science

基　　金：国家自然科学基金资助项目(10661005);安徽省优秀青年人才基金资助项目(2009SQRZ054);安徽省青年自然科学基金资助项目(KJ2009B031Z);安徽理工大学青年基金资助项目(QN200725)

摘　　要：讨论组合网格法(Composite Grid Method,CGM)在有限元程序自动生成系统平台(Finite Element Program Generator,FEPG)上的具体实现。该算法在整个求解区域上采用粗细两套网格求解,不要求规则网格和粗细两套网格嵌套,两套网格单独剖分、互不影响,能处理复杂的问题。该算法用于实际工程计算的迭代次数少,与常用的有限元方法所求得的解相符合,具有更加广泛的应用范围,符合科学和工程计算的实际要求。对搅拌摩擦焊接问题使用组合网格法进行数值模拟,取得了理想的仿真结果。The realization of composite grid method （CGM） based on Finite Element Program Generator （FEPG） was discussed in the paper. The method has two sets of grids in the whole domain-one rough and one fine grid. Regular grid is not required and mesh generation of the two sets of grids are seperate in region devision, not nested and interactive. Complex problem can be solved by the method. The iteratire number is few in engineering computation with the method. Solution by the method is accord with general finite element method. The method has wide application and meets scientific principle and engineering practice. The friction stir welding problems were simulated by the method, and some ideal simulation results were achieved.

关 键 词：组合网格法 有限元 数值模拟 FEPG 搅拌摩擦焊接 

分 类 号：O241.82[理学—计算数学]