遭毁伤聚能战斗部射流成型行为

针对遭毁伤聚能装药射流成型行为及其终点效应问题,采用AUTODYN-3D软件研究了侵孔位置、侵孔深度和侵孔直径对射流径向速度及其侵彻能力的影响特性。结果表明:侵孔导致射流径向速度明显增大且射流偏离轴线甚至提前断裂形成碎片,严重降低了其对靶板的侵彻能力,同等条件下,侵孔直径d=0.278倍装药直径的聚能装药比完好聚能装药对靶板侵深降低了24%;射流径向偏移速度主要受侵孔位置和侵孔直径的影响,随着侵孔到药型罩顶距离的减小,射流径向速度显著增大,同时对靶板侵彻深度也越小,x=0倍装药直径时,射流径向速度达19.0 m·s~(-1);射流径向速度随侵孔直径的增大而显著增大,d=0.278倍装药直径时,射流径向速度达41.1 m·s~(-1)。

Jet Formation Behavior of Damaged Shaped Charge Warhead

Numerical simulations for the jet formation behavior and its terminal effect of damaged shaped charge warhead were carried out using the AUTODYN-3D to investigate the influence of hole location, hole depth and hole diameter on jet lateral velocity and its penetration ability. Results show that any hole in the shaped charge can increase the radial velocity obviously and cause deviation of jet from the axis,which even results in jet break up into small fragments and reduced the penetration ability of jet severely. Compared to the intact shaped charge, the penetration power for damaged shaped charge with hole diameter d=0.278 times charge diameter is reduced 24% on equal conditions. It is a fact that hole location and hole diameter are the main influence factors of radial velocity for jet. With distance between the hole and the top of liner decreasing, the radial velocity of jet increases significantly and the penetration depth of the target plate decreases. The radial velocity of jet is 19.0 m·s^-1 for the hole location x=0 times of charge diameter. The radial velocity of the jet increases with the hole-diameter increasing and it can reach up to 41.1 m·s^-1 for the hole diameter d=0.278 times of charge diameter.