研究了汽车V形前纵梁的成形性,对比分析两种压料面工艺补充方案,建立了倒装单动拉深有限元模型。根据数值模拟结果,以压边力、摩擦系数、接触间隙、冲压速度为自变量设计了四因素四水平的正交试验模型,构造了最大增厚量、最大减薄率、最大回弹量与成形质量的关联函数。利用灰色关联分析法获得了多工艺参数对目标函数的关联度,并计算了目标函数的最优解,进而确定了一组最优工艺参数组合。再将最优工艺参数组合代入有限元模型进行模拟验证,较好地解决了起皱、破裂、折叠、局部过渡减薄等缺陷。最后依据几何位移修正回弹法对局部回弹进行了补偿,对模具型面进行了合理的设计变更。生产现场试模显示产品合格,缩短了传统试错法反复试模的时间。 The formability of automotive V-shaped front side beam was studied. The two complementary technical schemes of the nacelle were analyzed and compared. The finite element model of the single-acting aluminum alloy was established. According to numerical simulation results, orthogonal experimental model of four factors and four levels was designed with blank holder force, friction coefficient, contact gap and stamping speed as independent variables. The maximum thickening, maximum reduction, maximum springback and Forming quality of the correlation function. By using the gray relational analysis method, the correlation degree between the multi-process parameters and the objective function is obtained, and the optimal solution of the objective function is calculated, so as to determine a set of optimal process parameter combinations. And then the optimal process parameters into the finite element model for simulation verification, a better solution to the wrinkling, rupture, folding, local transition thinning and other defects. Finally, according to the geometric displacement correction springback method to compensate for the local springback, a reasonable design change was made to the mold profile. Trial production of the scene shows the product qualified, shortened the traditional trial and error method of trial and error time.