EFP垂直侵彻靶后破片云描述模型

摘要

针对靶后破片是影响装甲保护能力和聚能装药毁伤的主要问题，基于 EFP 垂直侵彻的靶后破片，建立其初始靶后破片云的数学描述模型，并在此基础上采用有限元仿真软件 AUTODYN-3D对EFP垂直侵彻钢靶形成靶后破片的过程进行数值模拟。数值模拟结果与靶场实验结果进行对比，结果表明：仿真的EFP成型参数、靶后破片空间分布状态和靶板开孔特征均与实验较为吻合。因此，证明该仿真模型和所得靶后破片云初始描述模型具有较高的可信度，可以为EFP对装甲目标的毁伤评估方面提供一定的参考。%Behind armor debris(BAD)is the impact of armor protection capacity and shaped charge damage to the main prob-lem.Based on the EFP vertical penetrating target fragments,the mathematical model of the debris cloud is established and the process of EFP penetrating the steel target after target formation is simulated numerically using the finite element simulation software AUTODYN-3D.Then the numerical simulation results are compared with the experimental results that the EFP pa-rameters,the spatial distribution of target fragments and the perforation characteristics of the targets are in good agreement with the experimental data.It is proved that the simulation model and the initial target description model of target cloud have high reliability,which could provide a reference for EFP to evaluate the damage of armored target.