汽车内覆盖件无油冲压的数值模拟及工艺优化  

Numerical simulation and process optimization of dry stamping for automotive interior cover parts

作　　者：苏友煌 王军辉 冯怡爽 刘显 何霁[1,3] 李淑慧 SU You-huang;WANG Jun-hui;FENG Yi-shuang;LIU Xian;HE Ji;LI Shu-hui(Shanghai Key Laboratory of Digital Manufacture for Thin-walled Structures,Shanghai Jiao Tong University,Shanghai 200240,China;Anting Press Shop One Technology Section,SAIC VOLKSWAGEN,Shanghai 201805,China;State Key Laboratory of Mechanical System and Vibration,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]上海交通大学上海市复杂薄板结构数字化制造重点实验室,上海200240 [2]上汽大众安亭冲压一车间技术股,上海201805 [3]上海交通大学机械系统与振动国家重点实验室,上海200240

出　　处：《塑性工程学报》2019年第5期42-50,共9页Journal of Plasticity Engineering

基　　金：国家自然科学基金资助项目(51505284;51790170);机械系统与振动国家重点实验室开放基金课题资助项目(MSVZD201808)

摘　　要：针对某形状复杂、拉伸深度大的汽车内覆盖件在无油拉延时产生开裂、起皱等缺陷的问题展开研究,通过材料力学性能试验获得材料力学响应,利用有限元分析软件Auto Form建立数字仿真模型并进行工艺数值模拟,通过正交试验优化工艺,得到最优的工艺参数设置,以此为指导,对压边力、等效拉延筋系数、拉延筋分布等工艺参数进行调控,从而减小板料成形的最大减薄率,减小开裂和起皱危险区域,达到降低缺陷产生风险,提高成形质量的目的。最后通过试验验证了该仿真模型的准确性和有效性,相关方法满足实际生产需求。The research was conducted in view of the phenomenon that cracking and wrinkle occur after dry stamping of some automotive interior cover parts,especially with complex shape and large drawing depth. The mechanical response of the materials was obtained by mechanical properties experiments,and the finite element model of the dry stamping of the interior cover parts was established by finite element analysis software Auto Form. Then,the orthogonal experiments were used to optimize the process parameters,and the optimal parameters such as blank holder force,equivalent drawbead coefficient and distribution of drawbead were obtained to reduce the maximum thinning rate and wrinkled area,in order to reduce the risk of defects and improve the forming quality. Finally,the accuracy and efficiency of the model were verified by the process experiment. And the above methods can meet the actual production needs.

关 键 词：无油冲压 数值模拟 正交试验 减薄率 工艺优化 

分 类 号：TH162[机械工程—机械制造及自动化]