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이동경화를 고려한 S-rail 성형공정 CAE에서의 스프링백 예측
김세호(Seho Kim),이명규(Myounggyu Lee),최병현(Byeunghyeun Choi),이진우(Jinwoo Lee),김흥규(Heungkyu kim) 한국자동차공학회 2012 한국자동차공학회 부문종합 학술대회 Vol.2012 No.5
In order to evaluate the accuracy of the springback prediction according to the hardening consideration, this paper compares the springback amount from the finite element stamping analysis with that from the experiment using two kinds of hardening rules such as isotropic hardening and kinematic hardening with Yoshida-Uemori model. From the analysis result, it is noted that the springback amount in the flange part is predicted more accurately with kinematic hardening model.