平面夹层炸药反射冲击起爆

长杆体撞击平面夹层炸药时，冲击波直接起爆的现象比较普遍，但如果撞击速度低于冲击起爆临界速度时，夹层炸药背板表面的反射波对起爆的影响也不可忽略，建立了平面夹层炸药反射冲击起焊模型，分析了杆体直径，盖板厚度以及炸药厚度与反射波冲击起爆炸药的关系，研究结果表明，反射波在速度低于事接冲击起爆临界值时具有明显的作用。

ANALYSIS ON REFLECTED-SHOCK INITIATION OF SANDWICH EXPLOSIVE

Generally sandwich explosive is initiated by the shock produced by impact of the projectile. But if the impact velocity is lower than critical initiation velocity, the reflected-shock on the surface of back plate may initiate the explosive. The model of reflected-shock imitiation of sandwich explosive is established. Diameter of projectile?thickness of the front plate and thickness of explosive layer have certain influence on reflected-shock initiation. The result shows that reflected-shock has some distinct effects on initiation when the velocity is lower than direct shock initiation thresholds.