工程设计学报2017，Vol.24Issue(6)：668-674,7.DOI:10.3785/j.issn.1006-754X.2017.06.009
基于混合硬化模型的TRIP780高强钢双C梁扭曲回弹仿真与试验
Experiment and simulation on twist springback for the double C rail of TRIP780 high strength steel based on mixed hardening model
摘要
Abstract
In order to realize the accurate prediction of the twist springback ,the process parame-ters must be controlled efficiently in the stamping of high strength steel sheet .The parameters of mixed hardening model based on Voce nonlinear isotropic hardening model and Chaboche nonlin-ear kinematic hardening model were inverted by using the response surface methodology and ge -netic algorithm combined with the experimental data . An evaluation index for the twist springback was proposed ,which was based on the angle between two lines in different planes . The experiment of twist springback for TRIP780 high strength steel was carried out by the hy-draulic press ,and the twist springback angle was measured by the three-coordinate measuring in-strument .The response surface model of springback angle was established based on the finite ele-ment model of the double C rail ,and the parameters of mixed hardening model were determined by using the approximation of the predicted value and measured springback angle .The related factors were analyzed by the extreme difference analysis method based on the validated finite ele-ment model of the double C rail ,and the key factors affecting the twist springback were deter-mined .The results showed that the factors which had great influences on the twist springback were the friction coefficient μ ,the holder force FN ,and the die fillet radius R1 and R2 ,so it pro-vides a theoretical basis for the effective control of the twist springback .关键词
混合硬化模型/TRIP780/参数反求/扭曲回弹Key words
mixed hardening model/TRIP780/parameter inversion/twist springback分类
矿业与冶金引用本文复制引用
黄仁勇,谢延敏,唐维,张飞,潘贝贝..基于混合硬化模型的TRIP780高强钢双C梁扭曲回弹仿真与试验[J].工程设计学报,2017,24(6):668-674,7.基金项目
国家自然科学基金资助项目(51005193) （51005193）
国家大学生创新创业训练计划项目(201710613033) （201710613033）
