基于FEM的翼子板充液成形工艺与优化  

Hydromechanical Deep Drawing Process and Optimization of Fender Based on FEM

作　　者：刘晓晶[1] 唐先林[1] 张晓华[1] 王飞[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》2018年第1期55-60,共6页Journal of Harbin University of Science and Technology

基　　金：黑龙江省自然科学基金(E201102)

摘　　要：针对复杂结构零件冲压成形时出现的破裂与拉延不充足等问题,采用板料成形模拟软件Dynaform对汽车前翼子板充液拉深工艺进行了有限元数值模拟研究。依据翼子板各处进料规律,提出了三种拉延阻力系数不同的拉延方案。以零件的成形极限图(FLD)为分析标准,研究了拉延阻力系数、液室压力加载路径和压边力对翼子板成形质量的影响规律。研究结果表明:设置合理的拉延筋、加载路径和压边力,可以改善翼子板的成形性能,并且能够获得壁厚分布均匀的零件。Aiming at the problem of failure and insufficient drawing when stamping forming for complex structure parts,we conduct numerical simulation of hydromechanical deep drawing to automobile front fender.According to the feeding law of fender,we propose three different drawing resistance coefficient programs,study the influence rules of main forming parameters on fender forming quality,like drawing resistance coefficient,chamber pressure,loading path,blank holder force,with the standard of forming limit diagram.The results show that under the reasonable match of drawbeads,loading path and blank holder force,forming performance of fender could be ameliorate,and obtain the part with uniform wall thickness distribution.

关 键 词：翼子板 充液拉深 数值模拟 拉延筋 

分 类 号：TG386.41[金属学及工艺—金属压力加工]