复合装药空气中爆炸冲击波传播特性

Shock wave propagation characteristics of double layer charge explosion in the air

为了研究复合装药超压爆轰时的径向能量输出特性,选择典型的TNT、JO-8、海萨尔等理想、非理想高能炸药,进行了单一装药、内外层复合装药冲击波超压测试实验。采用自由场压电传感器测量了距爆心2、3、4m处的冲击波压力,通过Origin软件对实验数据进行去除"零漂"和积分处理,获得了冲击波超压、冲量随距离的变化规律,分析了装药结构、装药类型对实验结果的影响。研究结果表明:与同体积单一装药相比,内外层复合装药对提高径向冲击波超压无优势,但对径向冲击波冲量增益显著,且冲量随传播距离的增加而增大;装药类型对内外层复合装药径向冲击波冲量增益影响较大,非理想/理想复合装药在4m处的冲量增益大于20%,比理想/理想复合装药更有利于提高战斗部的径向输出威力。

This paper studies the radial energy output of double-layer charge overpressure detonation based on the tests of single charge and double-layer charge explosion carried out on shock wave overpressure using ideal and non-ideal explosive of TNT,JO-8 and Hesar.The shock wave overpressure at 2,3,4 m was measured using the free filed piezoelectric sensor.The pattern of the shock wave overpressure and impulse varying with the distance was obtained by eliminating the zero-drift and integrating the software Origin.The effect of the charge structure and material was also examined.The results show that the overpressure of TNT/JO-8 double-layer charge in the radial direction was not improved as compared with the single charge with the same volume while the shock wave impulse exhibited a positive gain and increased with the distance.The material selection for the double-layer charge has great influence on the shock wave impulse.The overpressure gain at 4 m was about 15% for the non-ideal/ideal charge,which is much more beneficial in the radial output than for the ideal/ideal charge.