考虑板料冲压成形因素对车门刚度性能的影响  

Influence of Sheet Metal Forming Factor on Door Stiffness Mechanical Properties

作　　者：姚芳[1] 程林 张婷婷[1] YAO Fang;CHENG Lin;ZHANG Ting-ting(College of Mechanical and Automotive Engineering,Chuzhou Polytechnic,Chuzhou Anhui 239000,China)

机构地区：[1]滁州职业技术学院机械与汽车工程学院,安徽滁州239000

出　　处：《萍乡学院学报》2022年第3期37-40,共4页Journal of Pingxiang University

基　　金：安徽高等学校自然科学项目(YJY-2020-23,YJY-2021-03)。

摘　　要：考虑冲压成形时覆盖件力学性能的变化对车门刚度性能的影响,以某车型的前门外板为研究对象,建立了完整的有限元模型。以LS-DYNA软件为求解器,对车门外板成形过程进行数值模拟分析,将外板成形后的网格数据、塑性应变、厚度和残余应力等信息,通过LS-PREPOST软件映射到外板新网格中,作为新网格的初始参数。通过对比分析,最终获得不同工况下车门在扭转刚度、最大应力值和最大位移量处均存在明显差异,其中应力成形因素影响最大,最大应力值及扭转刚度分别激增186%和17.7%,最大位移量下降17.7%。Considering the influence of the mechanical properties of the panel on the door structure performance during stamping, a complete finite element model is established based on the right front door panel of a certain vehicle.Taking LS-DYNA as the solver, the sheet metal forming process is simulated and analyzed. The information of grid, residual stress, thickness and plastic strain after sheet metal forming is mapped to the new grid by LS-PREPOST software as the initial parameters of the grid, the maximum displacement, maximum strain and torsional stiffness of the door under different working conditions are finally obtained. The results show that: after considering the forming factor, there are significant differences in the maximum displacement,maximum stress and torsional stiffness of the door structure, in which the stress factor has the largest influence,the maximum stress and torsion stiffness increased by 186% and 17.7%.

关 键 词：车门结构性能 板料冲压仿真 成形因素 

分 类 号：TH123.4[机械工程—机械设计及理论] U463.83[机械工程—车辆工程]