Numerical simulation and experimental study on shock initiation of multi-layered interval targets subjected by large mass tungsten fragments impact

摘要：

　　In order to investigate the influence of large mass fragments on shock initiation, a coupling method of smoothed particle hydrodynamics and finite element method was used to analyze the initiation of explosive behind different spaced targets under high velocity impacting by fragments.And the shock initiation experiments of different multi-layered spaced target were carried out by using the two-stage gas gun to launch large mass tungsten fragments.The critical initiation velocity was obtained,which shown that the simulation results are consistent well with experimental results, and the SPH/FEM coupling method can be applied to analyze the shock initiation problem by fragment impacting well.The correlations between the critical initiation velocity and oblique impact angle were obtained by data fitting.Results show that the secondary fragments deriving from the tungsten fragments and the multi-layered spaced targets play an important role on the critical velocity and the critical time at initiation.

关键词： Shock initiation Numerical simulation Smoothed particle hydrodynamics Critical initiation velocity

作者: Bin LIANG Jie-qun ZHOU Gao-peng FENG Yong-Gang LU Xue-ting WEI Yong-qing ZHU

作者单位: Institute of Systems of Engineering, China Academy of Engineering Physics, Mianyang 621900, Sichuan, 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: 508-514

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）