汽车车身构件冲压回弹研究现状  

Research on status of stamping springback for auto-body parts

作　　者：李富柱[1] 翟长盼 李伟[1] 郭玉琴[1] 倪俊 Li Fuzhu;Zhai Changpan;Li Wei;Guo Yuqin;Ni Jun(School of Mechanical Engineering, Jiangsu University, Zhenjiang 212000, China)

机构地区：[1]江苏大学机械工程学院

出　　处：《锻压技术》2018年第2期1-8,共8页Forging & Stamping Technology

基　　金：国家自然科学基金资助项目(51575245);江苏省“六大人才高峰”资助项目(XNYQC-002);江苏大学青年科技扶持基金项目(FCJJ2015010);江苏大学高级人才启动基金项目(16JDG038)

摘　　要：全面综述了目前车身构件冲压回弹的研究现状,包括研究对象、方法以及影响因素（模具结构参数、板料性能参数等）。重点总结了影响有限元回弹预测精度和计算效率的主要因素,包括屈服准则、材料模型、硬化模型,并给出了国内外回弹研究在成形工艺及新材料两方面的差距。阐述了回弹研究趋势,即研究对象由简单件向复杂件拓展,研究工艺向温、热成形发展以及碳纤维等新材料的逐渐应用。最后指出了未来回弹研究重点应集中在建立新材料本构模型、补充完善现有回弹理论体系、创新和发展相关回弹研究方法和控制措施等方面。The research status of stamping springback for auto-body parts was discussed fully relating to the research objects,methods and influencing factors such as die structure parameters,sheet metal property parameters etc. Then,the main factors including yield criterion,material constitutive model and hardening model influencing on the precise and computing efficiency of springback prediction were emphatically summarized,and the research differences of springback at home and abroad were given mainly from aspects of forming technology and new materials. Furthermore,the trend of springback research was given,the research object was expanded from simple parts to complex parts,the forming process was developed to the warm and hot forming,and the application of CFRP and other new materials. Finally,it was pointed out that the future research concerns was focused on establishing new material constitutive models,improving the existing springback theory,innovating and developing the related research methods and control measures of springback.

关 键 词：汽车车身构件 冲压 回弹 材料本构模型 屈服准则 

分 类 号：TG386[金属学及工艺—金属压力加工]