间隙对A3钢薄板抗卵形头弹侵彻性能影响的实验研究

为了分析板间间隙大小对双层板失效模式以及抗侵彻性能的影响，本文利用轻气炮进行了卵形杆弹正撞击单层板和等厚双层板的实验研究，得到了各种结构靶体的初始-剩余速度曲线和弹道极限速度。实验表明，对于卵形弹，单层板的弹道极限高于双层板的弹道极限，包括接触式和间隙式。当总厚度一定时，多层板的弹道极限随分层数目的增加而减小。此外，间隙大小对间隙式双层板的抗侵彻性能影响小，并且随着弹体初始速度的增加而减小。

Effect of gap on the ballistic performance of double-layered A3 steel shields against ogival rigid projectiles

Double layered targets and monolithic targets were normally impacted by ogival projectiles with the help of a gas gun to investigate the influence of air gap on the ballistic resistance and target failure model. Based on the result of impact tests, the residual velocity versus the initial velocity curves of the projectiles are constructed and ballistic limit velocities obtained. Experimental results show that: The ballistic resistance of monolithic is higher than that of double-layered plate with or without gap for ogival projectiles. The ballistic limit velocties of multi-layered gargets decrease with the increase of the number of layers for a given total thickness, . The ballistic resistance of spaced targets are little sensitive to the air gap size, the effect of gap on the ballistic limit decrease with the increase of velocity of pro-jectile.