汽车复杂梁形件冲压成形及回弹数值模拟  

Numerical Simulation on Stamping Forming and Springback of Complex Automobile Beam-shaped Part

作　　者：刘晓晶[1] 刘博[1] 陈晓晓[1] 潘强荣[1] 张彦燊[1] 

机构地区：[1]哈尔滨理工大学材料科学与工程学院,黑龙江哈尔滨150040

出　　处：《哈尔滨理工大学学报》2015年第1期75-79,共5页Journal of Harbin University of Science and Technology

基　　金：黑龙江省教育厅2012年度面上项目(12521076)

摘　　要：回弹问题是影响高强钢板进一步应用的原因之一,为了降低回弹影响,通常可以通过设置合理的工艺参数的方法减小回弹.以材料为高强钢的复杂型面汽车后边梁为例,对成形过程进行数值模拟分析,采用设置等效拉延筋及改变压边力大小的方法优化零件的成形结果,并最终确定后边梁成形时的等效拉延筋位置分布、拉延筋阻力和压边力的大小.利用计算出偏移最大的节点之间距离的方法对后边梁的回弹量进行测量.采用局部增大拉延筋阻力以及减小压边力的方法,对后边梁成形后所产生的卸载回弹及修边回弹进行控制,等效拉延筋阻力与压边力进行合理配比使回弹减小到较小的范围.最后将模拟所得到的结果与实验结果对比,即零件回弹较小,成形精度较高,进而得出该回弹控制方法可用于指导实际生产的结论.As a serious problem, sF a large extent. For the sake of reducing ringback has restricted the industry application of high strength steel sheet to springback influence, suitable process parameters are very crucial to reduce springback. Analyzing the forming process of back-beam with complex surface by numerical simulation, a method that is setting equivalent draw bead and BHF optimization was adopted to optimize forming results to determine loca- tion distribution of equivalent draw bead and size of draw bead resistance. The springback amount of back-beam is measured by the method of figuring out the distance between the node with the largest offset and the original node. The method of increasing locally drawbead ming springback after back-beam forming, resistance and decreasing BHF is adopted to control springback and trim- and match reasonably equivalent drawbead and BHF to make springback amount decrease to a small range. The part has a smaller springback amount and a higher forming precision through comparing the simulation results with the experimental results, the springback control method can be used to guide the practical production.

关 键 词：板料成形 数值模拟 回弹 拉延筋 

分 类 号：TG386[金属学及工艺—金属压力加工]