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.
出处
《火炸药学报》
EI
CAS
CSCD
2008年第3期20-24,共5页
Chinese Journal of Explosives & Propellants
关键词
爆炸力学
定向战斗部
起爆方式
破片速度
平面起爆
explosion mechanics
directional warhead
initiation way
fragment velocity
plane wave initiation
