尾裙对弹体斜侵彻混凝土薄靶弹道的影响规律研究

为研究尾裙设计在弹体斜侵彻混凝土薄靶后的姿态影响,采用LS-DYNA软件,模拟了不同半锥角尾裙弹以不同初始倾角贯穿混凝土薄靶的过程,分析了侵彻过程中各阶段弹体姿态变化特征,得到了弹体过靶后倾角、攻角和角速度变化规律. 结果表明,尾裙的设计有助于减小弹体的攻角和角速度,有利于保持弹体斜侵彻混凝土薄靶时的弹道稳定. 

Investigation on the Influence Rules of the Tapered Tail Projectile Penetration into Thin Concrete Target

To study the effect of attitude on the tapered tail projectile penetration into thin concrete target, the finite element code LS-DYNA was used to simulate the process, perforating thin concrete target by the tapered tail projectile of different half-cone angle with a certain initial oblique angle. The features of projectile attitude variation were analyzed. The rules of changes about obliquity, pitch and angular velocity of projectile after perforation were obtained. The simulation results indicate that both the yaw angle and the angular velocity are existed with the projectile, and the designed tapered tail can benefit the yaw angle and the angular velocity decrease so as to hold the trajectory stability when the projectile penetrates thin concrete target.