基于爆炸冲击波的战斗部炸点位置预测

Prediction of Warhead Explosion Position Based on Blast Shock Wave

为解决侵彻战斗部在建筑物等目标内部爆炸后的爆炸位置难以测定的问题,提出一种基于爆炸冲击波超压测试数据的炸点预测方法。基于爆炸冲击波传播速度与冲击波超压衰减规律,构建冲击波到达时间与传播距离的数学模型,将超定非线性方程组的最小二乘解转换为无约束多元非线性函数的极值求解,应用MATLAB软件的fminsearch函数计算获取炸点坐标,并应用实爆试验数据对比分析计算结果与实测结果。结果表明:该方法具有可行性,用于末端动态速度小于476.42 m/s,战斗部炸点预测的偏差在1.5 m以内。

In order to solve the problem that it is difficult to determine the explosion position of the penetrating warhead after it explodes inside buildings and other targets,a method for predicting the explosion position based on the over pressure test data of blast shock wave was proposed.Based on the law of shock wave propagation velocity and attenuation of shock wave over pressure,the mathematical model of shock wave arrival time and propagation distance were established,and the least square solution of over-determined nonlinear equations was converted into the extreme solution of unconstrained multivariate nonlinear function,and the fminsearch function of MATLAB software was used to calculate the coordinates of the explosion position.The results of calculation and measurement were compared with those of real explosion test data.The results show that the method is feasible,and its terminal daynamis velocity is less than 476.42 m/s,the its predication deviation for warhead explosion point is within 1.5 m.