对差厚拼焊板汽车后门内板零件在冲压成形时的焊缝移动进行研究,设定了有限元数值模拟前处理的一些关键参数;建立了车门内板及其模具的三维模型;用分析软件Dynaform进行数值模拟仿真。研究了焊缝位置对成形性及焊缝移动的影响,同时对焊缝移动控制等进行了大量模拟拉深试验。对这些模拟结果进行了分析讨论,最终得到了较合理的结果,并用于指导模具设计。 The weld seam movement during the process of stamping was studied, and some key parameters of the finite element numerical simulation preprocessing were set up. The three-dimensional model of the door inner panel and its mold was established. Software Dynaform for numerical simulation. The influence of weld location on formability and weld movement was studied. At the same time, a large number of simulation tests were conducted on weld seam movement control. The simulation results were analyzed and discussed, and finally got more reasonable results, and used to guide the mold design.