D型战斗部破片飞散性及威力场快速计算

破片威力场的快速计算是实现战斗部对目标快速评估的关键之一,本文中分别对型面宽度为90°、120°和150°三种D型战斗部的破片飞散规律进行实验和数值模拟研究,考察型面宽度和起爆模式对破片威力场的影响规律。结果表明:三种结构中包含90%破片的方位角分别为21.16°、23.88°和30.08°;偏心线起爆和双端面偏心起爆,在20°方位角内破片总能量分别是周向均匀战斗部中心起爆能量的3.4倍和3.3倍;基于三种典型型面的破片威力场公式,通过构建二次插值函数获得其他型面战斗部的破片分布,为D型战斗部破片威力场的快速计算提供了一种有效方法。

Dispersion properties and rapid calculation of fragment force field of D-shaped fragmentation warhead

Rapid calculation of the fragment force field is a key technique for quick damage assessment of warhead to target. In this work we carried out experiment and simulation on the dispersion patterns of three D-shaped warheads with the angle 90°, 120° and 150° and investigated the influences of the shape’s width and detonation mode on the distribution of the fragment force field. The results showed that 90% of the fragments in the three structures had azimuths of 21.16°, 23.88° and 30.08°, respectively; the eccentric line detonation and the two ends’ eccentric detonations were found to be better detonation modes, and the total energy of the fragments in 20° azimuth was respectively 3.4 and 3.3 times higher than the energy of the conventional fragmentation warhead. Based on the rapid calculation formulas of the fragment field of three typical shapes, we proposed that the force field of differently shaped warheads were obtained by constructing the quadratic interpolation function, providing an effective method for rapidly analyzing the distribution of the fragment field in the D-shaped warhead.