周向MLEFP成型过程的数值计算

为提高周向多线性爆炸成型弹丸的毁伤性能,用ANSYS/LS-DYNA有限元软件对周向MLEFP成型过程进行计算。通过对成型后LEFP性能的统计分析,得出装药长径比对周向MLEFP成型性能的影响规律。结果表明,在爆炸载荷作用下,周向MLEFP装药结构能够在四个方向上形成具有一定速度和长度的线性爆炸成型弹丸,可以实现从四周进行近距离拦截和引爆来袭导弹、毁伤轻型装甲目标的目的;当装药长径比取1.0≤L/D≤1.5时,形成的LEFP速度高,密实度好,集群毁伤效能好。

Numerical Calculation on Formation of the Circumferential MLEFP

In order to enhance damage effectiveness of the circumferential multiple linear explosively formed penetrator(MLEFP) charge,the forming process of circumferential MLEFP was calculated by ANSYS/LS-DYNA.By statistic analysis of the formed assembly linear explosively formed penetrator(LEFP),the effect of the length-diameter ratio of charge to the forming of circumferential MLEFP was obtained.The result shows that the circumferential MLEFP charge can form the LEFP with a certain speed on four directions to realize circumferential damage and has a certain effect in dealing with armored vehicle and the incoming missile under explosive loading.When the length-diameter ratio of charge is 1.0≤L/D≤1.5,the LEFP formed by the circumferential MLEFP has higher speed and better assembly damage effectiveness.