设计了一种小长径比变锥角前级装药结构,利用LS-DYNA有限元分析软件,采用多物质ALE算法,分别对锥形和变锥角装药结构在中心和环形起爆方式下的射流形成过程进行了数值模拟。仿真结果表明,文中设计的变锥角装药结构在环形起爆方式下形成的射流直径大、杵体小、速度梯度小,更符合串联聚能战斗部前级装药的特性要求。

A small length-diameter ratio structure with changed conical angle was designed for forward shaped charge of tandem warhead. Using the multi-material ALE algorithm, the jet formation process of cone charge and the designed charge was numerically simulated based on a finite element program LS-DYNA. Simulation results show that the latter can form a jet which can better meet the requirement of forward shaped charge for tandem warhead.