The Comparative Study on Dynamic Flow Behaviors of Bullet-proof Steel Using Various Constitutive Models

摘要：

　　In this paper, the dynamic tension of bullet-proof steels processed by hot stamping are tested on MTS810 and Hopkinson bar, in which four types of steels (B1, B2, C1 and C2) are used.For each sample, the flow behavior is predicted via Johnson-Cook (JC), Modified Johnson-Cook(MJC) and Cowper-Symonds (CS) models on the basis of experimental data, respectively, and the calculation method is also introduced.After that, the errors between prediction of each model and experimental data are analyzed and discussed.As a result, the most appropriate constitutive model for dynamic flow behaviors of bullet-proof steel is proposed.Moreover, our in-house software has been developed for calculating, comparing and selecting typical constitutive models for dynamic flow behaviors of materials, which has the functions of parameters input and output, curve plotting and data storing.The work carried out in this paper will be beneficial for accurate simulation of materials deformation.

关键词： bullet-proof steel Johnson-Cook Cowper-Symonds Modified Johnson-Cook dynamic tension data software

作者: Zhao Yan Ma Mingtu Jin Qingsheng

作者单位: Automotive Lightweight Engineering Research Center,China Automotive Engineering Research Institute Co.,Ltd,Chongqing,401122,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: 165-171

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）