多边形壳体对带尾翼爆炸成型弹丸成型过程影响的数值分析

Numerical Analysis of the Effect of Polygonal Shell on the Forming Process of Explosively Formed Projective with Tail Fins

近代对带尾翼爆炸成型弹丸（EFP）成型技术的研究，其机理基本上是控制爆轰波的传播方向和时间，从而引起药型罩周边产生一个周期性变化的冲量和速度，强制药型罩边缘形成有规律地产生翘曲，所以形成一定形状的尾翼。基于上述理论，利用显式动力分析软件ANSYS/LS-DYNA，建立一个具有特定形状壳体的EFP战斗部模型，进行研究多边形壳体引导爆轰波作用于药型罩上的规律和作用结果。模拟结果证明多边形壳体EFP战斗部能够形成良好的尾翼；并且具有一定的对称性，此研究具有一定的研究价值。

The mechanism of explosively formed projective(EFP)forming technology with tail fins has been studied in recent years,mainly depending on controlling the propagation direction and time of detonation waves,which caused the circumference of the shaped charge liner to produce a cyclical change in the impulse and speed,and forced the edge of the shaped charge liner to warp regularly and so that came the formation of a certain shape of the tail.Therefore,based on the above theory,an EFP warhead model with a specific shape shell was established,by using the explicit dynamic analysis software ANSYS/LS-DYNA,to study the regularity and results of the polygonal shell guiding on detonation wave.The simulation results show that the EFP warhead with the polygonal shell can form a good and Symmetrical tail fins,which proves a certain research value.