冲击波毁伤评估方法

针对冲击波对建筑物内目标毁伤概率研究的不足以及瞄准点选定困难的问题,首先分析了冲击波在建筑物中的毁伤特点,提出了体积毁伤概率的概念并给出了计算方法;其次通过研究冲击波在建筑物中的传播规律,建立了一种等效的冲击波峰值超压分布模型;然后运用网格划分的方法,得到了建筑物中毁伤概率最大的理想炸点。仿真中通过对离散点遍历得到建筑物内目标情况已知和未知2种不同假设情况下100kg TNT对飞机毁伤的最佳炸点,分别为(14,14,4)和(22.5,22.5,3),在最佳炸点引爆时毁伤概率分别为1和0.26。仿真表明:建筑物内目标位置明确的情况下毁伤概率明显大于目标位置不明确时,这与真实情况相符。

A Study of the Method of Shock Damage Probability Assessment

Aimed at the problems that the study is not enough on the shock wave damage assessment methods of the target in building and the selecting aiming point is difficult, this paper proposes a concept of the volume-damage probability assessment, sets up a simulation model and gives out a computational method of the volume damage probability through the research on the shock wave propagation in buildings, and based on the gridding method, also presents a discrete point method to compute the three-dimensional damage probability. Finally, the result shows that the model accords with the fact, the disperse-point method is effective, and high in precision. Thereby, the concept of the volume damage probability assessment will be of great value to us in our research shock wave damage work and the precision guide missile and selecting aiming point.