圆柱体镦粗过程无网格伽辽金法数值模拟技术的研究  

Research on Numerical Simulation in Cylinder Upsetting Process Based on Element Free Galerkin Method

作　　者：曹伟[1] 管延锦[2] 李修纲 袁洋 

机构地区：[1]烟台汽车工程职业学院机电工程系,山东烟台265500 [2]山东大学材料科学与工程学院,山东济南250061 [3]青岛市广电局城阳广电中心,山东青岛266000 [4]潍坊宝利汽车有限公司,山东潍坊261057

出　　处：《锻压装备与制造技术》2008年第3期59-62,共4页China Metalforming Equipment & Manufacturing Technology

基　　金：国家自然科学基金资助项目(50575125)

摘　　要：在原有的无网格分析程序基础上针对镦粗过程进行了数值模拟,研究了摩擦系数、权函数影响域半径和离散点数目等因素于金属流动、应力应变分布以及无网格法在精度和效率上的影响。将以上各种分析与有限元方法的分析结果进行了对比研究,二者的分析结果吻合程度较高。Based on the meshless program, the numerical simulation of the upsetting has been analysed.The effect of the friction coefficient, domain radius influenced by the weighted function, and the discrete points number on the metal flow pattern,the distribution of the stress-strain and the precision,and efficiency of the Element Free Galerkin Method （EFGM）have been studied.By comparing EFGM results with those obtained by the rigid viscoplastic Finite Element Method at the same condition, the two are found in good agreement.

关 键 词：机械制造 镦粗 数值模拟 圆柱体 有限元法 

分 类 号：TG316.11[金属学及工艺—金属压力加工]