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含能材料  2013 

一种双模态EFP战斗部的数值仿真

Keywords: 爆炸力学,爆炸成型弹丸(EFP),刻槽圆环,尾翼,数值模拟

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Abstract:

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(explosivelyformedprojectile,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。

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