命中位置对引爆重型爆炸反应装甲影响数值模拟

主要针对聚能战斗部引爆重型爆炸反应装甲问题开展研究，采用前处理软件TrueGrid建立了聚能射流引爆重型反应装甲数值计算模型，并采用非线性动力学软件LS-DYNA对该问题进行了数值模拟研究，使用后处理软件LS-prepost获得了不同命中位置对爆炸反应装甲引爆特性和飞散特性的影响特性.结果表明，命中位置对反应装甲引爆和飞散行为影响显著.命中位置越靠近反应装甲边缘，夹层装药起爆后的爆轰波峰值压力越低；飞板越晚开始飞散运动，加速时间越短；飞板飞散速度越小，对射流的干扰持续时间越长. 

Numerical Simulation of Influence of Hit Position on Detonating Heavy Explosive Reaction Armor

This paper mainly focuses on the research on the detonation of heavy explosive reactive armor by the shaped charge warhead. The pre-processing software TrueGrid was used to establish a numerical calculation model for the detonation of heavy explosive reactive armor by the shaped charge jet, and the nonlinear dynamics software LS-DYNA was used to conduct a numerical simulation study on the problem. The post-processing software LS-prepost was used to obtain the influence of different impact positions on the detonation characteristics and scattering characteristics of ERA. Numerical simulation results show that the impact position has a significant influence on the detonation and scattering behavior of ERA. The closer the impact position is toward the edge of ERA, the lower the peak detonation wave pressure after the detonation of the interlayer charge; the later the flying plate starts to move, the shorter the acceleration time of the flying plate is, and the lower the flying velocity is, the longer duration interference to the jet will be.