子弹旋转对平板高速撞击损伤的影响

The Effect of Bullet Rotation on the High Speed Impact Damage to Plate

子弹在作战状态下往往伴随着高速的旋转,为了研究子弹的旋转对平板高速撞击响应的影响,构建了旋转子弹侵彻平板的计算模型,根据相关实验结果确定了合理的材料参数,研究了子弹在不同转速、不同入射速度下侵彻不同厚度平板的撞击响应差异性。研究结果表明,在保证子弹的入射速度相同的前提下,不同转速的旋转子弹撞击较薄平板的变形模式差异性比撞击较厚平板的变形模式差异性大。研究结论为子弹的旋转速度越高,其侵彻后的剩余速度越大,但子弹撞击平板的撞击载荷受子弹转速的影响却不明显;在不考虑温度的情况下,子弹以相同速度撞击平板时,能量耗散量基本不随子弹转速变化。

Bullets often rotate in high speed in the combat state.To study the influence of the rotation of a high-speed bullet on a flat plate,the model of bullet penetration into a flat plate was constructed,the corresponding material parameters were determined in relevant experimental results,and the effects of different thickness in different rotational speed and different incident speed were studied.The results show that under the same incident velocity of the bullet,the deformation modes of the rotating bullet affecting the thinner plate were more different than those of the thicker plate.Therefore,the residual velocity after penetration is proportional to its rotation speed,but the impact load of the bullet hitting the plate is not obviously affected by the rotation speed of the bullet.When a bullet strikes the plates at the same velocity without considering the temperature,the energy dissipation basically does not change with the bullet speed.