摘要
在模具设计中怎样准确计算翻边零件切边轮廓仍是一个无法解决的难题。针对这一问题提出一种基于有限元变形路径迭代法的切边线计算方法,解决了模具设计过程中关键问题。分析了切边线优化流程图,研究了有限元变形路径迭代的基本算法,分析了切边轮廓切除、增补过程。探讨了变形路径迭代法中形状尺寸偏差的定义。通过对某汽车地板横梁支架切边线的计算,验证了该方法迭代的收敛性、计算结果的可靠性及在工程上的可行性。将由该方法求得的切边轮廓应用于实际生产中,可以减少试模次数和试模周期,节约生产成本。
How to determine the trimming contour is a very hard work. In this paper, a new method based on the finite element deformation path iteration has been suggested as an effective tool to resolve the main problem in the sheet metal forming process for determining the cutting contour. In this paper, the diagram of the optimum trimming line procedure was schemed. The deformation path iteration method＇ s basic arithmetic was researched. The modification of shape error volume for optimizing trimming line was analyzed here. Then, the definition of shape error based on the deformation path iteration was discussed . In order to verify the convergence of the iteration, the reliability of the results, and the feasibility of the proposed method in engineering, a complex part example was investigated. It will reduce the trial - and - error times or periods and save the manufacture costs as a result of the application of the optimum cutting contour calculated by the proposed method.
出处
《计算机仿真》
CSCD
2007年第1期250-253,294,共5页
Computer Simulation
基金
国家"985工程"资助项目(531105030002)
关键词
翻边
切边
计算机仿真
变形路径迭代
Flanging
Trimming
Computer simulation
Deformation path iteration
