基于有限元法和田口方法的翼子板成形工艺参数优化

Optimization of Fender Forming Process Parameters Based on Finite Element Method and Taguchi Method

基于有限元法和田口方法,讨论了工艺参数对翼子板成形质量的影响。采用田口的L9(34)正交阵列开展有限元仿真试验,对比各组试验的综合信噪比,获得最优参数组合。试验结果表明,制件成形质量在最大变薄率和最大增厚率之间取得了较好的平衡,压边力是影响最大的工艺参数。实物零件变薄率与仿真模型变薄率的最大差值是1.75%,两者成形一致性较高。证明有限元法结合田口方法用于车身覆盖件成形多目标工艺参数的寻优设计简便可行。

Based on the finite element method and Taguchi method,this paper discusses the influence of process parameters on the forming quality of the fender.Taguchi's L9 orthogonal array was used to carry out finite element simulation experiments,and the comprehensive signal-to-noise ratio of each group of experiments was compared to obtain the optimal parameter combination.The test results show that the forming quality of the part has a good balance between the maximum thinning rate and the maximum thickening rate,and the blank holder force is the most influential process parameter.The maximum difference between the thinning rate of the physical part and the thinning rate of the simulation model is 1.75%,so the forming consistency between the two is relatively high.It is proved that the finite element method combined with Taguchi method is simple and feasible for the optimization design of multi-objective process parameters of car body panel forming.