弹头形状对侵彻多层靶弹道的影响

Influence of Nose Shape of Projectile on the Penetration Trajectory of Multilayer Target

为了提高侵彻弹斜侵彻多层混凝土靶过程弹道稳定性,提出了头部刻槽形弹体结构和尖卵形弹体结构设计。基于LS‑DYNA软件开展数值模拟计算,并进行了两种弹体侵彻10层混凝土靶试验。研究表明:在侵彻单层混凝土薄靶的过程中,随初始攻角增大弹体姿态偏转角度增大,刻槽形弹体相对尖卵形弹体姿态偏转相对较小。对比侵彻10层混凝土靶试验结果,刻槽形弹体相对尖卵形弹体可显著减少弹体偏转姿态,具有较好的侵彻弹道稳定性。

In order to improve the ballistic stability of projectile obliquely penetrating multi‑layer concrete target,the structure designs of grooved projectile and ogive‑nose projectile are proposed.Numerical simulation was carried out based on LS‑DYNA software,and two projectiles penetrating 10‑layer concrete target were tested.Research shows that in the process of penetrating single‑layer concrete thin target,the deflection angle of projectile attitude increases with the increase of initial attack angle,and the attitude deflection of grooved projectile is relatively small compared with that of ogive‑nosed projectile.Comparing the test results of two projectiles with different nose shapes penetrating 10‑layer concrete target,grooved projectiles can reduce more significantly the deflection of projectile attitude than ogive‑nosed projectiles,which has a better ballistic stability.The study provides reference for the design of projectile with ballistic stability of multilayer targets penetration.