Effects of liner material constitutive parameters on the shape of dual-mode penetrators based on the Johnson-Cook model

摘要：

　　Based on the Johnson-Cook constitutive model, the effects of the material constitutive parameters on the formation of the dual-mode penetrator, including an explosively formed penetrator (EFP) and jetting projectile charge (JPC), were simulated considering the application of different liner materials.The tip velocities and length-diameter ratios of EFP and JPC exponentially decrease with increasing yield stress, hardening coefficient, strain hardening exponent, temperature coefficient and strain hardening exponent.Density has the strongest effect on the tip velocity of the EFP and JPC, while the yield stress and hardening coefficient have the strongest effects on the length-diameter ratio of the EFP.Expressions of the tip velocity and length-diameter ratio of the dual-mode penetrator considering the effects of material constitutive parameters were obtained by fitting.The calculation results were in good agreement with experimental results obtained by the X-ray imaging of different material liners.

关键词： Liner material Explosively formed penetrator Jetting projectile charge Constitutive parameters

作者: Ya-jun WANG Wei-bing LI Xue-fei FAN Wen-bin LI Xiao-ming WANG

作者单位: ZNDY of Ministerial Key Laboratory, Nanjing University of Science and Technology, Nanjing 210094, China

会议类型: 国际会议

会议名称: 2018 International Conference on Defence Technology (2018国际防务技术会议)

会议地点: 北京

会议语种:英文

页码: 395-398

在线出版日期: 2018-10-21（万方平台首次上网日期，不代表论文的发表时间）