论述了板料冲压成形有限元模拟的理论和主要步骤。采用Autoform中的增量计算法与双动拉延对汽车覆盖件进行了冲压成形过程的有限元分析,预测了板料成形过程中减薄、拉裂、起皱等缺陷,同时分析缺陷产生的原因;通过调整拉深筋参数与压边力大小,对成形结果进行优化,证明了有限元模拟分析设计方法具有实用性。 The theory and major steps of finite element simulation of sheet metal stamping are discussed. The finite element analysis of stamping process of automobile panel was carried out by incremental calculation method and double-acting drawing in Autoform, and the defects such as thinning, cracking and wrinkling during sheet forming were predicted. At the same time, defects By adjusting the parameters of drawbead and the size of blank holder, the result of forming is optimized. It is proved that the method of finite element simulation analysis is practical.