锻压技术

基于有限元的汽车外覆盖件面畸变分析

英文标题：Analysis of surface defect in automobile outer panel based on finite element

作者：谌勇志郭劲松娄茂昆

分类号：TB391.9

出版年,卷(期):页码：2013,38(4):32-35

摘要：

利用有限元及曲率分析技术研究汽车门外板件回弹后造成的表面畸变问题。首先基于商业软件Pamstamp进行门外板成形分析和回弹分析。其次截取回弹后的门外板门把手处网格的截面线，计算截面线各点曲率。依据曲率分析结果，可显示出门外板面畸变位于曲率变化较大区域，与实际零件的面畸变区域对比，仿真结果能较好的吻合。最后讨论了工艺参数对表面畸变的影响及变化规律。

The finite element and curvature analysis technology was used to study the surface defect in auto outer door panel caused by springback. First, the commercial software pamstamp was employed for the forming simulation and the springback calculation. Second, the crosssections of the model were extracted, and the curvature of each point was calculated. According to the analysis of curvature, the surface defect was located in the place where curvature dramatically changed. Compared with the actual panel shape, the simulated result has predicted the areas of defects. Finally, the influence of process parameters on the surface defect was discussed.

基金项目：

谌勇志(1986-)，男，硕士，工程师

参考文献：

［1］杨玉英，孙振忠.汽车覆盖件面畸变评价指标研究[J].塑性工程学报，2004,11(4):76-80. Yang Y Y, Sun Z Z. Study on evaluation standard of automobile panels surface deflection[J]. Journal of Plasticity Engineering, 2004,11(4):76-80.
［2］任志国.覆盖件面畸变试验及数值模拟研究[D].哈尔滨：哈尔滨理工大学，2006. Ren Z G. The Experiment and Numerical Simulation in Surface Deflection of Automobile Outer Panel[D]. Harbin: Harbin University of Science and Technology, 2006.
［3］鲍文华. 汽车外覆盖件钢板表面缺陷及改进[J].轻型汽车技术, 2004,(8):21-23. Bao W H. Surface defect of automobile outer panel and improvement[J].Light Vehicles, 2004,(8):21-23.
［4］Sandrine Thuillier，Alban Le Port. Surface defects in sheet metal morming: a simulative laboratory device and comparison with FE analysis[A]. NUMISHEET 2011[C]. Seoul, Korea,2011.
［5］Park C D, Chung W J, Kim B M. A numerical and experimental study of surface deflections in automobile exterior panels[J]. J.Mater.Process Technol., 2007,(187188):99-102.
［6］The Japan Sheet Metal Forming Research Group. Handbook of ease or difficulty in press forming[M]. Japan:National Center for Manufacturing Sciences, 1993.
［7］林忠钦, 李淑慧, 于忠奇,等. 车身覆盖件冲压成形仿真[M]. 北京: 机械工业出版社, 2004.Lin Z Q, Lee S H, YU Z Q,et al. Car body covering parts stamping forming simulation[M]. Beijing:Mechanical Industry Press,2004.
［8］王凤琴，赵军，官英平. 毛坯外形对盒形件拉深成形的影响[J]. 中国机械工程, 2003,7(14):619-622. Wang F Q, Zhao J, Guan Y P. Influences of blank shape on deep drawing forming of rectangular box[J]. China Mechanical Engineering, 2003,7(14):619-622.
［9］袁国定，王红伟. 拼焊板方盒件冲压成形压边力数值模拟分析[J]. 塑性工程学报, 2008,15(1):41-44.Yuan G D, Wang H W. Numerical simulation analysis of blank holder force in TWB square-box deep drawing[J]. Journal of Plasticity Engineering, 2008,15(1):41-44.
［10］唐甜甜，李东升，罗红宇,等. 板材冲压成形摩擦系数实时测量系统设计研究[J]. 锻压技术,2008,33(3):32-35. Tang T T, Li D S, Luo H Y. Finite element simulation for the realtime measuring system of friction coefficient in the process of sheet metal forming[J]. Forging & Stamping Technology, 2008,33(3):32-35.

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