摘要
对建立板料成形极限图的各种试验和理论进行研究分析,指出现有试验和理论存在的缺点和不足.在此基础上通过运用有限元数值模拟与实冲试验相结合的方法,研究复杂应变路径下的板料成形极限,并以经过二次冲压的车辆左后悬挂架为例,研究了左后悬挂架危险点的应变路径,最终确定了该零件的成形方案.研究结果表明:有限元数值模拟可以实现复杂应变路径;应变路径的不同对冲压成形的结果有很大影响.
Experiments and theories for founding forming limit diagram of sheet metal are described and shortcomings of current experiments and theories are pointed out. Based on this, a method is used by means of integration of finite element simulation and experiment for researching forming limit diagram of sheet metal in complex strain paths. Meanwhile, as an example, forming limit of dangerous point of rear hanger which has undergone twice stamping is investigated. Finally forming method of rear hanger is confirmed. The results indicate that FEM can realize the complex strain paths and different strain paths will affect the result of sheet metal forming greatly.
出处
《江苏大学学报（自然科学版）》
EI
CAS
北大核心
2005年第4期289-293,共5页
Journal of Jiangsu University：Natural Science Edition
基金
国家自然科学基金资助项目(50475125
50275075)
关键词
板料成形
成形极限
应变路径
数值模拟
Computer simulation
Finite element method
Sheet metal
Stamping
Strain
