弹片与爆炸冲击波耦合作用分析

弹片和冲击波是武器战斗部毁伤效应的两个重要方面,两者具有一定的相关性.通过研究弹片与爆炸冲击波的耦合作用,分析并推导了弹片在空气中的运动规律和运动方程,以及弹壳对武器爆炸冲击波的影响.通过实例分析,验证了建立的模型和计算方法的合理性和正确性.弹片的最大速度和壳体厚度对爆炸冲击波能量的影响因子随着弹壳厚度的增加而降低.弹壳增厚会导致在爆轰气体与弹壳相互作用的阶段,有更多的能量损耗于壳体膨胀和破碎过程,从而使爆炸冲击波的能量减弱.在实际计算中,必须考虑弹壳的存在以及壳体厚度对爆炸冲击波能量的影响作用.

Analysis of coupling between shrapnel and blast shock wave

Shrapnel and shock wave are two important aspects of warheads in causing damage to threat targets, and they have a certain relationship. By analyzing the interaction between shrapnel and shock wave, a new quantitative analysis method was presented for calculating the kinetic rules of the flying shrapnel and the influence of warhead shells on shock wave. The rationality and validity of the model and calculative method established in the paper were validated by an example. With the increase of shell thickness, both the maximum velocity of shrapnel and the influence factor of shell thickness on blast shock wave energy reduce. The increase of shell thickness leads to more explosive energy on the process of inflation and fragmentation of the shell, thus, the shock wave energy becomes weak. In practical calculation, the existence of the shell and the influence action of shell thickness on blast shock wave energy must be taken into consideration.