垫层对破片冲击起爆带壳炸药影响的数值模拟  

Numerical simulation of the interlayer effects for fragments impacting steel-covered charge

作　　者：张涛[1] 刘雨生[1] 高志鹏[1] 杨佳[1] 刘艺[1] 谷岩[1] ZHANG Tao;LIU Yusheng;GAO Zhipeng;YANG Jia;LIU Yi;GU Yan(Institute of Fluid Physics,China Academy of Engineering Physics,Mianyang 621999,Sichuan,China)

机构地区：[1]中国工程物理研究院流体物理研究所,四川绵阳621999

出　　处：《爆炸与冲击》2018年第6期1241-1246,共6页Explosion and Shock Waves

摘　　要：将战斗部简化为带钢壳和垫层的炸药组件,用3种不同厚度的材料作垫层,利用非线性有限元软件AUTODYN对高速破片侵彻、引爆带壳炸药的作用过程进行了数值模拟,得到了高速破片冲击起爆带壳带垫层炸药的波后压力剖面。对不同厚度多种材料作为垫层时带壳炸药的冲击到爆轰距离进行了对比分析,结果表明,通过控制垫层的材料和厚度,可以对破片冲击起爆带壳炸药进行有效抑制。研究结果对战斗部破片起爆的防护设计具有指导意义。Non-linear dynamical finite element software AUTODYN was used to simulate the shock initiation of steel-covered charge impacted by high-velocity fragments.The interlayer effect was studied based on the pressure history of initiation when different materials and thickness interlayers were used.The results show that the interlayer material is an important factor affecting pressure history and run-to-detonation of explosives,the thickness of interlayer has the same effects.The initiation of explosives can be effectively prevented with changing the thickness and material of the interlayer.

关 键 词：垫层 带壳炸药 高速飞片 冲击起爆 非线性有限元 

分 类 号：O383[理学—流体力学]