着靶攻角对尾翼稳定脱壳穿甲弹侵彻性能的影响

Effect of Target Attack Angle on Penetration Performance of Armor Piercing Fin-stabilized Discarding Sabot Projectile

为研究着靶攻角对尾翼稳定脱壳穿甲弹侵彻性能的影响,利用非线性动力学分析软件对脱壳穿甲弹高速斜侵彻匀质钢靶进行数值模拟,验证了脱壳穿甲弹斜侵彻半无限靶板不同阶段的作用过程。理论计算和数值模拟表明:脱壳穿甲弹以非零攻角侵彻靶板时,开坑阶段压力降低少;着靶攻角为正时,弹体向有利于穿透的一侧偏转;攻角δ等于+2°左右时,穿甲效果最佳。

In order to study the effect of angle of attack on the penetrating performance of armor piercing fin-stabilized discarding sabot( APFSDS) projectile,a nonlinear dynamic analysis software is used to simulate the high-speed oblique penetration of APFSDS projectiles into the homogeneous steel target. The penetration process of APFSDS projectile into the semi-infinite target plate at different stages is verified in simulation. The theoretically calculated and numerically simulated results show that the pressure drop is small at the cratering stage when the angle of attack is small,the penetration angle of projectile is deflected when the attack angle is positive,and the penetration effect is optimal at about 2° angle of attack.