基于理想形变理论的有限元逆算法在板料成形中的应用  

Application of finite element inverse approach in sheet metal forming process based on ideal forming theory

作　　者：朱光成[1] 吴建军[1] 

机构地区：[1]西北工业大学机电学院,陕西西安710072

出　　处：《锻压装备与制造技术》2011年第3期49-52,共4页China Metalforming Equipment & Manufacturing Technology

基　　金：国家863计划资助项目(2008AA04Z120)

摘　　要：基于理想形变理论,研究了金属板料成形的有限元逆算法,并开发了计算程序。采用线性三角形膜单元和厚向异性的刚塑性材料模型,计算了一个带凸缘的方盒形件,并与Dynaform的一步逆向法和增量法的计算结果进行了比较。实例分析结果表明,在工程允许精度范围内,本文方法能够有效分析零件的成形性能。由于该方法计算速度快,所以可用于零件的早期设计。Based on ideal forming theory,the finite element inverse approach for sheet metal forming has been explored,and the computer program has been implemented.By use of the linear triangular membrane element andthe thickness anisotropy rigid-plasticity material model,a flanged square box has been analyzed and its result has been compared with the results obtained from MSTEP and incremental approach of Dynaform software.The results show that the finite element inverse approach is an effective approach for sheet metal forming only if its error is allowable during the engineering calculation.Because of its rapid computing speed,this method can be used at the early design stage of sheet metal forming parts.

关 键 词：机械制造 板料成形 理想形变理论 有限元 

分 类 号：TG386[金属学及工艺—金属压力加工]