体积成形数值模拟技术的研究现状与发展趋势.PDF

　第 23 卷 　第 6 期 航 　空 　学 　报 Vol 23 No 6 　2002 年 　　11 月 ACTA AERONAU TICA ET ASTRONAU TICA SIN ICA Nov 　2002 文章编号 (2002) 　　 体积成形数值模拟技术的研究现状及发展趋势 刘玉红 , 李付国 , 吴诗　 (西北工业大学 402 教研室 , 陕西 西安 　710072) NUMERICAL SIMULATION FOR BUL K FORMING PROCESS :ITS CURRENT STATUS AND FUTURE PROGRESS L IU Yuhong , L I Fuguo , WU Shichun ( Faculty 402 , Northwestern Polytechnical University , Xi ′an 　710072 , China) 摘 　要 : 简要回顾了金属体积成形三维数值模拟技术的发展历程, 对国内外在此领域的研究现状及发展趋势 作了较全面的分析与展望, 指出研究的重点由宏观转向微观、单一分散转向耦合集成、由共性通用转向特性专 用型的模拟。介绍了 4 种数值模拟新方法 ———无网格数值模拟、自适应有限元数值模拟、刚塑性有限边界单 元法、基于特征的有限元数值模拟。 关键词 : 体积成形; 数值模拟新方法; 有限元法 中图分类号: TG302 ; V261 　　　文献标识码 : A Abstract : Metal bulk forming is a large nonlinear deformation process in geometry and physics. This paper reviews briefly the developmental history of 3D numerical simulation techniques for the metal bulk forming process , then , summarizes comprehensively its current research status and priority research areas inland and abroad. Researchers have turned their steps from macro , singleness and decentralization , and commontype simulation to micro , coupling and integration , and specialtytype simulation. Four new methods on numerical simulation are presented , which are meshless method , adaptive FEM method , rigidplastic finiteboundary element method , and featurebased FEM method. At the end of the paper , an attempt is made to forecast the future pro gress of the numerical simulation. Key words : bulk forming ;new numerical simulation ; finiteelement method ( )