椭圆截面战斗部破片飞散特性研究

Scattering characteristics study on elliptical cross-section warhead fragment

为研究椭圆截面战斗部毁伤特性,采用数值模拟与试验相结合的方法,开展了椭圆截面战斗部破片飞散特性研究。研究结果表明:椭圆截面战斗部在短轴方向的破片速度、破片分布密度全部高于长轴方向,在长短轴之比a/b=1.8条件下,短轴方向相对长轴方向的破片速度增益可以达到15%以上,破片分布密度增益可以达到440%以上,验证了椭圆截面战斗部具有在短轴方向毁伤增强的典型特点,在椭圆截面战斗部应用时,应考虑采用椭圆截面的短轴方向作为打击目标的主要方向。

In order to study the destroy characteristics of elliptical cross-section warhead,the method of numerical simulation combined with test is used for the study of scattering characteristics of elliptical cross-section warhead fragment.The results show that elliptical cross-section warhead has the characteristics of low velocity and distribution density of fragment in the direction of long axis while high velocity and distribution density of fragment in the direction of short axis.Under the condition of a/b=1.8,the fragment velocity gain in the short axis direction relative to the long axis direction can reach more than 15%,and the fragment distribution density gain can reach more than 440%,which verifies that the elliptical section warhead has the typical characteristics of damage enhancement in the short axis direction.Therefore,it should be considered to use the direction of short axis of elliptical cross-section warhead as its main direction of striking target in the application of the warhead.