模具技术Issue(6)：1-6,26,7.
基于M-K理论的高温成形极限预测及影响因素分析
The prediction and influence factors analysis of high temperature forming limit based on M-K theory
郑兴悦 1陈劼实1
作者信息
- 1. 上海交通大学 塑性成形技术与装备研究院,上海200030
- 折叠
摘要
Abstract
In order to obtain the high temperature forming limit of 22MnB5 high strength steel with greater accuracy,a prediction model is proposed based on M-K theory,BBC 2005 yield criterion,Norton-Hoff flow stress model.The accuracy of the prediction model is verified by comparing with the experimental data in the literature.This model can be used as an inspection criterion for high strength steel in hot stamping process.It can be concluded that high order anisotropic yield criterion is more suitable to describe the FLC (Forming Limit Curve) of 22MnB5.The groove angle in M-K theory has little influence on the FLC.In a certain temperature and strain rate range,the position of the FLC increases with the increase of temperature and strain rate.关键词
22MnB5/热冲压/M-K理论/本构关系/成形极限模型Key words
22MnB5/hot stamping/M-K theory/constitutive relation/forming limit prediction model分类
矿业与冶金引用本文复制引用
郑兴悦,陈劼实..基于M-K理论的高温成形极限预测及影响因素分析[J].模具技术,2017,(6):1-6,26,7.
