分析了汽车B柱拼焊板成形过程的工艺方案。利用有限元分析软件Dynaform对其成形过程进行了数值模拟。对成形中出现的破裂、起皱和焊缝移动等现象进行了研究。分析了产生缺陷的原因,提出工艺优化措施,最后通过模拟得到了较好的结果,并用生产零件验证了B柱拼焊板拉深成形工艺的可行性。 The technical scheme of the forming process of the automotive B-pillar tailor welded plate is analyzed. Finite element analysis software Dynaform was used to simulate the forming process. The phenomena of rupture, creasing and weld seam movement in the forming process were studied. The causes of the defects were analyzed, the process optimization measures were put forward. Finally, the better results were obtained by simulation. The feasibility of the deep drawing forming process of the B-pillar welding blanket was verified with the production parts.