弹丸头部对斜侵彻弹道偏转影响研究

通过对不同头部形状与组合材料的弹头对中厚钢靶的斜侵彻弹道对比研究，获得了尖卵形、截卵形与内凹截卵形，以及不同截卵位置、弹头长度和头部组合材料弹头对斜侵彻中弹道偏转的影响规律和侵彻过程中受到偏转力矩的变化规律。计算结果表明：截卵形弹弹道偏离角小，抗弹道姿态劣化的能力强，侵彻弹道相对稳定性好；弹头前端复合高密度、高硬度钨合金材料的弹丸侵彻能力强，弹道偏离角小。基于弹道侵彻过程偏转力矩与偏转角的时空演化特点，获得斜侵彻弹道偏转关联性。通过正交试验得到了影响弹道偏离角由大到小的因素分别为：弹头形状、弹头材料和弹速。研究结果可为低速弹丸与金属靶的斜侵彻弹道分析和弹丸头部设计提供一定帮助。

Ballistic Deflection on Oblique Penetration of Projectiles with Different Noses

The ballistic trajectories of projectiles with differently shaped noses and composite material noses obliquely penetrating into steel target are researched. The deflection torque during the penetration is also studied. The results show that the ballistic deflection of projectile with truncated-oval nose is smaller, its performance against the ballistic degradation is high and its penetration trajectory is stable. The nose made of high-density and high hardness tungsten composite material shows the better penetration performance and the smaller ballistic deflection angle. The deflection relevance of oblique penetration ballistic trajectory is obtained based on the relation between the oblique torque and the oblique angle. It can be seen from orthogonal experiment simulation that the shape of the nose, the material of the nose and the penetrating velocity have the effects on the oblique angle.