一种双模态EFP战斗部的数值仿真  

Numerical Simulation of a Dual-mode EFP Warhead

作　　者：臧立伟[1] 尹建平[1] 王志军[1] 

机构地区：[1]中北大学机电工程学院,山西太原030051

出　　处：《含能材料》2013年第2期253-256,共4页Chinese Journal of Energetic Materials

基　　金：国防基础科研项目(批准号:k133040610090)

摘　　要：针对同一成型装药形成多模毁伤元问题,利用LS-DYNA动力有限元程序,采用流固耦合方法,对在药型罩前加装一刻槽圆环形成带尾翼爆炸成型弹丸(explosively formed projectile,EFP)的成型过程进行了数值模拟,结果表明,该装药结构能形成带有8个尾翼的EFP,带尾翼EFP的长径比是EFP长径比的2.75倍,其头部速度比EFP增加了15%,实现了带尾翼大长径比EFP和EFP两种模态的转换。In order to study the multimode penetrators with the same shaped charge, the process of the explosively formed projectile （EFP） with fins which was formed by a grooved numerical simulation of the forming torus in front of the liner, was carried out by the Arbitrary Lagrange-Euler（ALE） method using LS-DYNA. Results indicate that the charge structure can form EFP with eight fins, and the length-diameter ratio of EFP with fins is 2.75 times of that of EFP and it velocity increases by 15 percent.

关 键 词：爆炸力学 爆炸成型弹丸(EFP) 刻槽圆环 尾翼 数值模拟 

分 类 号：TJ410.34[兵器科学与技术—火炮、自动武器与弹药工程]