Study of the Front Bumper Process on the Basis of Hot Forming

摘要：

　　The fitting method is used for obtaining the constitutive relation of ultra-high strength steel in this paper.At the same time, the forming limit of the material is researched under the different deformation conditions.Through experiments, the paper obtains stress and strain curve under different deformation temperature and strain rate.On the basis of the experimental data, the constitutive relationship model is establishes which can reflect the deformation capacity of ultra-high strength steel during process of hot forming.Combining with finite element simulation results of hot forming by commercial software AUTOFORM, transfer path of load and matching law of strength, the paper determines the design criteria and forming process requirements of parts manufactured by hot forming.Through setting different process parameters, such as punch velocity and friction coefficient, and blank shape, the paper find that process parameters and blank shape have an essential effect on quality of parts.

关键词： ultra-high strength steel hot forming constitutive relation forming limit

作者: Xiaona Wang Fei Xiong Jianwei Jin

作者单位: Geely Automobile Institute,Hangzhou,P.R.China

会议类型: 国际会议

会议名称: 2014 International Conference on Hot Stamping of UHSS(2014高强度钢热冲压成形国际会议)

会议地点: 重庆

会议语种:英文

页码: 266-269

在线出版日期: 2014-08-21（万方平台首次上网日期，不代表论文的发表时间）