汽车S轨冲压成型过程中的材料流变及塑性变形行为  

The Rheological and Plastic Deformation Behaviors of Materials in Automobile S-rail Stamping and Forming Process

作　　者：张同荣 刘宏伟 董博闻 吴振鹏 ZHANG Tongrong;LIU Hongwei;DONG Bowen;WU Zhenpeng(School of Mechanical and Electrical Engineering,Hubei Polytechnic University,Huangshi Hubei 435003;Hubei Key Laboratory of Intelligent Conveying Technology and Device,Hubei Polytechnic University,Huangshi Hubei 435003)

机构地区：[1]湖北理工学院机电工程学院,湖北黄石435003 [2]湖北理工学院智能输送技术与装备湖北省重点实验室,湖北黄石435003

出　　处：《湖北理工学院学报》2024年第6期13-16,28,共5页Journal of Hubei Polytechnic University

基　　金：国家自然科学基金项目(项目编号:52201038);湖北省自然科学基金项目(项目编号:2022CFB978)。

摘　　要：S轨作为汽车结构中的一类重要能量吸收构件,其性能高低将直接影响汽车的行驶稳定性。为分析汽车S轨在冲压成型过程中的材料流变及塑性变形行为,基于有限元算法模拟分析了汽车S轨的冲压成型过程,得到不同时刻下汽车S轨的应力分布和厚度分布图以及凸模力曲线,并进行结构失效分析。结果表明,汽车S轨侧面和弯曲部位在冲压时所受应力最大,表明汽车S轨两侧面厚度较薄的区域与应力最大部位的重合区域在实际应用过程中失效的可能性最大,揭示了S轨在冲压过程中的结构变化趋势,可为高性能S轨的研制提供理论依据。As an important energy-absorbing component in the automobile structure,the performance of the S-rail will directly affect the driving stability of the vehicle.To analyze the material rheological and plastic deformation behavior of automobile S-rail during stamping process,the stamping process of automobile S-rail was simulated and analyzed based on finite element algorithm.The stress distribution and thickness distribution diagrams and punch force curve of the automobile S-rail at different times for structural failure analysis were obtained.The results show that the stress on the side and bending parts of the S-rail is the greatest during stamping,which indicates that the overlapping area of the thin thickness on both sides of the S-rail and the part with the maximum stress is the most likely to fail in the practical application process.This paper reveals the structural change trend of S-rail in the stamping process,which will provide a theoretical basis for the development of high-performance S-rail.

关 键 词：汽车S轨 冲压成型 有限元 

分 类 号：TG113.26[金属学及工艺—物理冶金]