聚焦式杀伤战斗部形成破片的数值模拟

Numerical Simulation on Fragment Formation of Focused Damaging Warhead

为提升破片对目标的毁伤概率,设计了一种聚焦式杀伤战斗部,针对不同的壳体厚度与起爆方式建立计算模型,利用Autodyn软件对破片的形成过程进行数值模拟,获得了壳体厚度与起爆方式对破片的速度特性、数量特性、飞散特性的影响规律。结果表明,随着壳体厚度的增加,破片速度和飞散角逐渐降低,有效破片占总破片数的百分比先增大后减小,中心起爆可获得较大的破片速度。

In order to improve the probability of damage to the target, this paper designs a focused damaging warhead. The calculation model is established for different shell thickness and detonation mode. The formation processof the fragment is numerically simulated by Autodyn software, and the effect of shell thickness and detonation onthe velocity characteristics, mass characteristics and scattering characteristics of the fragments are obtained. The results show that with the increase of the thickness of the shell, the velocity and the scattering angle decrease gradually, and the percentage of the effective fragments will increase first and then decrease, and the central initiationcan obtain the larger fragment velocity.