爆炸抛撒子弹翻转运动研究

针对子母弹爆炸抛撒实验中产生的子弹绕弹轴垂直方向翻转的现象,通过理论和计算机仿真两方面的研究,以弥补对这一问题研究的空白.应用经典力学理论建立了子弹翻转运动的理论模型,并采用LS-DYNA对子弹翻转过程进行了仿真计算.采用理论模型计算得到的子弹翻转角速度与仿真结果具有非常好的一致性,说明所建立的理论模型是正确的,可以用来预测子弹爆炸抛撒时子弹翻转的角速度.

Study on Submunition's Turnover Movement in Explosion Dispersion

Theoretical study and numerical simulation on the phenomenon of submunitions turnover around an axis perpendicular to flight direction of the submunition in the experiment on explosion dispersion of submunitions are first carried out in this paper.Theoretical model about submunitions turnover is developed based on classical mechanics theory and the numerical simulation on turnover process of submunitions is carried out by LS-DYNA.The calculated results about turnover angular velocity of submunitions based on the model are in accordance with the corresponding simulation results,which proves that the model is valid and therefore may be used to forecast turnover angular velocity of submunitions in explosion dispersion.