为评估在大炸高情况下高速杆式射流的侵彻威力,运用数值模拟和静爆试验方法,分析在大炸高下,药型罩罩高和曲率半径对杆式射流侵彻威力的影响规律。仿真结果:H/D<0.2时,形成的侵彻体形状短而粗,即EFP;H/D≥0.2时,形成杆式侵彻体;1.3≤R/D≤1.7时,形成的杆式射流成型和速度较好。试验结果:对于装药口径为63mm的战斗部,药型罩结构参数H/D=0.3或R/D=1.7的装药结构所形成的杆式射流在1.2m(20D)炸高下可穿透90mm厚45#钢锭。研究结果为大炸高下高速杆式射流战斗部结构设计提供参考依据。

In order to evaluate penetration power of rod-like jet under high standoff, warhead was provided for eccentric sub-hemisphere charge structure, the method of numerical simulation and static-explosion tests was used to analyze effect of liner height and radius of curvature on penetration power under high standoff. Simulation results: H/D <0.2, the penetrator shapes short and thick. H/D≥0.2, rod-like penetrator forms; 1.3<R/D≤1.7, the formed rod-like jet whose forming and speed are better. Based on 63-mm-diameter warhead structure, tests show that the charge structure with liner structural parameters of H/D = 0.3 or R/D = 1.7 forms rod-like jet, which can penetrate a 90-mm-thick 45 steel target under standoff of 1.2 m (20D). The research results can greatly provide a reference for rod-like jet and structural design of warhead under high standoff.