基于模具变形分析的防撞梁回弹预测精度研究  

Accuracy study of springback prediction for anti-collision beam based on die deformation

作　　者：于强[1] 

机构地区：[1]天津职业技术师范大学天津市高速切削与精密加工重点实验室,天津300222

出　　处：《锻压技术》2013年第3期54-57,共4页Forging & Stamping Technology

基　　金：天津市应用基础及前沿技术研究计划资助项目(12JCYBJC12600);天津高校双五科技计划资助项目(SWPY20080003);天津职业技术师范大学科研计划资助项目(KJ12-13;KJY12-12)

摘　　要：以某车型材料为DP780的防撞梁制件及其冲压模具为研究对象,利用有限元数值模拟与试验相结合的研究方法,探讨模具弹性变形对制件回弹预测精度的影响。结果表明:当制件成形时,压边圈与凹模接触压强在0.02～0.04GPa之间,凸模与凹模中心区域的接触压强在0～0.01GPa之间,通过不等间隙型面和理想等间隙型面预测的制件回弹量与实际试模结果相比,前者预测精度误差平均减少17%以上,有效提高了超高强度钢板制件的回弹预测精度。An anti collision beam and die were investigated by combination of finite element simulation and tryout meth ods. The effect of die elastic deformation to springback prediction accuracy was studied. The results show that when panel is formed, the contact pressure between binder and die is 0. 02-0. 04 GPa and the value is 0-0.01 GPa in the center area between punch and die. Combined with die tryout results, the springback prediction error by simulation with compensated die face is reduced by 17% in average. The simulation method considering die elastic deformation can improve the springback prediction accuracy greatly for ultra high strength steel panels.

关 键 词：高强度钢板 模具变形 回弹 数值模拟 

分 类 号：TG386.3[金属学及工艺—金属压力加工]