手刹固定板冲压成形数值模拟
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摘要
利用有限元模拟软件AutoForm对某车型手刹固定板进行了冲压成形数值模拟,研究了工艺参数对拉延成形质量的影响规律,并分析了原因。采用正交试验优化设计方法进一步优化了工艺参数,并进行了全工序模拟。研究结果表明:在合理设置拉延筋基础上,通过优化工艺参数能够有效控制成形件质量。最佳工艺参数条件为:压边力600 kN、凹模圆角半径6mm、凹凸模模具间隙1.50 mm、摩擦因数0.15。通过实际实验验证了模拟结果的正确性,说明利用数值模拟可以有效指导实际生产。
The stamping process of handbrake fixed plate on the automobile was simulated using the finite element simulation software AutoForm,and the influence mechanism of process parameters on the drawing forming was investigated. Orthogonal experiments were used to optimize parameters and the whole process was simulated. The simulation results indicate that the quality of forming parts is improved by optimizing the process parameters on the basis of the rational design of the drawbead. The optimum condition of process parameters are blankholder force 600 kN,die radius 6 mm,die gap 1.50 mm,friction coefficient 0.15,drawbead coefficient 0.5. The correctness of the simulation results is proved by practical experiments,which means that simulation software Autoform can be applied to guide the actual production.
The stamping process of handbrake fixed plate on the automobile was simulated using the finite element simulation software AutoForm,and the influence mechanism of process parameters on the drawing forming was investigated. Orthogonal experiments were used to optimize parameters and the whole process was simulated. The simulation results indicate that the quality of forming parts is improved by optimizing the process parameters on the basis of the rational design of the drawbead. The optimum condition of process parameters are blankholder force 600 kN,die radius 6 mm,die gap 1.50 mm,friction coefficient 0.15,drawbead coefficient 0.5. The correctness of the simulation results is proved by practical experiments,which means that simulation software Autoform can be applied to guide the actual production.
引文
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[2]李春光,胡平,郭威.汽车覆盖件深拉延有限元仿真过程中的材料塑性与失效模型[J].吉林大学学报:工学版,2005,35(3):277281.Li Chunguang,Hu Ping,Guo Wei.Material plasticity and invalidation model in fem simulation of automobile panels deep drawing[J].Journal of Jilin University(Engineering and Technology Edition),2005,35(3):277281.
[3]张海波,黎甜,白贺.基于Cimatron E的离心泵蜗壳数控加工技术研究[J].东北电力大学学报,2013,33(3):14.Zhang Haibo,Li Tian,Bai He.Numerical control processing technology research of centrifugal pump volute based on Cimatron E[J].Journal of Northeast Dianli University,2013,33(3):14.
[4]Kawka M,Olejnik L,Rosochowski A,et al.Simulation of wrinkling in sheet metal forming[J].Journal of Materials Processing Technology,2001,109(3):283289.
[5]肖红波,蔡浩华.汽车前翼子板冲压成形工艺优化[J].锻压技术,2016,41(2):3538.Xiao Hongbo,Cai Haohua.Improvement of stamping process for car front fender[J].Forging and Stamping Technology,2016,41(2):3538.
[6]段向敏.汽车覆盖件成形数值模拟及拉延筋优化研[D].重庆:西南大学工程技术学院,2014.Duan Xiangmin.Numerical simulation and draw bead optimization of automobile panels forming[D].Chongqing:School of Engineering and Technology,Southwest University,2014.
[7]Mehta H S,Kobayashi S.Finite element analysis and experimental investigation of Sheet metal stretching[J].Journal of Manufacturing Science and Engineering,1973,95(3):874880.
[8]De Moor E,Lacroix S,Samek L,et al.Dilatometric study of the quench and partitioning process[C]∥The3rd International Conference on Advanced Structural Steels,Gyeongju,Korea,2006:873879.
[9]张早明.CAE在汽车工业中的应用[J].汽车科技,2008(5):711.Zhang Zaoming.Application of CAE in car industry[J].Automobile Science and Technology,2008(5):711.
[10]Lam Y C,Brtiion G A,Deng Y M.A computeraided system for optimal moulding design using a simulationbased approach[J].International Journal of Advanced Manufacturing Technology,2003,22:574586.