破片轴向飞散战斗部破片速度的分布规律  

Fragment Velocity Distribution of Forward-firing Warhead

作　　者：仲凯[1] 袁宝慧[1] 许碧英[1] 施长军[1] 

机构地区：[1]西安近代化学研究所,陕西西安710065

出　　处：《火炸药学报》2008年第3期20-24,共5页Chinese Journal of Explosives & Propellants

摘　　要：用数值模拟和试验两种方法研究了不同装药长径比的破片轴向飞散战斗部在单点起爆与平面起爆两种起爆方式下的速度分布特征。结果表明,装药端面中心位置处破片速度最高,沿径向大致呈抛物线趋势衰减;随着长径比的增大,破片速度增大,但增大幅度趋缓;相对于中心单点起爆,平面起爆提高了装药爆轰的瞬时度,减弱了爆轰产物气体侧向稀疏作用,能够有效提高破片速度,且速度增益在中心位置处最大,沿径向增益趋缓;就装药结构来说,长径比越大,速度增益越小,平面起爆能够更有效地提高小长径比战斗部的破片速度增益。The characteristics of the fragment velocity distribution of forward-firing warheads with different charge length/diameter ratio under center point initiation and plane wave initiation was studied by the method of numerical simulation and experiments. The results indicated that the velocities of fragments decreases gradually along radial direction from the center of charge, where the velocity reach the peak value, and the fragment velocities increase with the increase of the charge length/diameter ratio. The value of velocities of fragments under plane wave initiation enhances evidently compared with that under center point initiation, and the enhancement decreases gradually along radial direction from the center of charge. The lager the charge length/diameter ratio, the smaller the enhancement. The plane wave initiation is more effective for warhead with small charge length/diameter ratio.

关 键 词：爆炸力学 定向战斗部 起爆方式 破片速度 平面起爆 

分 类 号：TJ760.31[兵器科学与技术—武器系统与运用工程] TQ565.2[化学工程—炸药化工]