差厚激光拼焊板汽车后纵梁拉延成形数值模拟分析.pdf

上半月出版 差厚激光拼焊板汽车后纵梁拉延成形 数值模拟分析 李崇1。周杰：李世云1．张勇2 (1重庆大学材料科学与工程学院，重庆400044；2．机械工业第三设计院，重庆400039) 摘要：采用有限元数值模拟方法，运用有限元分析软件DYNAFORM对差厚激光拼焊板汽车后纵梁拉延成形过 程进行了模拟分析。对模拟结果中零件出现的破裂、起皱等缺陷进行了工艺优化．将优化后的工艺参数用于实际生产． 从而消除了生产过程中可能产生的缺陷。通过模拟分析可为实际生产提供指导．并试模得到了合格制件．减少了模具开 发周期。 关键词：激光拼焊板；后纵粱；模拟分析；工艺优化 中围分类号：TG386 文献标识码：A 文章编号：100I．3814佗012)03-0081．03 NumericalSimulationon ProcessofLaserTailor-weldedBack Analysis Stamping RailwithDimrent11洳knessofAutomobile L1 Jie’，LI Chon91，ZHOUShiyunl，ZHANGYon92 ofMaterialScienceand China (1 400044，China；2CTDI College Engineering,ChongqingUniverisity．Chongqing 400044) EngineeringConporation，Chongqing Abstraet：Finiteelementnumericalsimulationmethodand血esoftwareDYNAFORMwereusedtosinulatethe oftheautomobilebackrailmadelasmtailor-welededblankswithdifferentthicknessInorderto snmpingprocess by controlthe ofcrackandwrinklethat inthe was disfigurements appearedstampingprocess，theprocessoptimization basedonthesimulation．The wasusedinthe andthe proposed optmtizedprocess practicalproductiondefects，which in thenumerical referenceforthe production eliminated．Tin-oughsimulation,the appeared process，were practical is is andthe ofdie reducesaswell provided；thequalifiedpartgot production period developing words：tailor-welded Key blank