锻压技术

球底筒形件成形极限数值模拟及实验研究

英文标题：Research on numerical simulation and experiment of forming limit for the spherical-bottomed cylindrical parts

作者：陈康彭成允库美芳刘春

关键词：球底圆筒形拉深应力状态 Dynaform

分类号：TG386

出版年,卷(期):页码：2010,35(4):21-26

摘要：

对球底圆筒形零件进行了受力分析，根据其成形特点，将成形过程分成了材料悬空和直筒贴模两个阶段，建立数学模型，通过应力分析得到了各阶段各个部位的应力状态；利用Dynaform数值分析软件模拟了各工艺参数条件下球底圆筒形零件的成形过程，得出了各工艺参数对球底直筒形件成形极限的影响规律，即压边力、摩擦系数在一定范围内减小以及板厚增大，会使成形件的胀形区域扩大，有利于球底圆筒形件成形极限高度的增加。最后进行了实验验证，与实验结论一致。

Force analysis of the spherical\|bottomed cylindrical parts was done. According to its forming characteristics, the forming process was divided into materials vacancies and straight punch stages, and the mathematical model was established. Stage stress analysis was carried out in various parts. Dynaform software was used to simulate the forming process of the spherical-bottomed cylindrical parts under various process parameters, and the impact law of the process parameters to the spherical\|bottomed cylindrical parts forming limit was obtained. It is that decreasing the blank holder force and friction coefficient in a certain range and increasing the thickness will expand the bulging region of forming parts, which is benefit to the forming limit of the spherical-bottomed cylindrical parts. The experiment verification is consistent with the conclusion.

基金项目：

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