压装高能炸药的燃烧转爆轰实验研究

用电探针和压力传感器测定了质量分数为95%压装高能炸药(密度为1.86 g/cm~3)的燃烧转爆轰特性.研究了点火药量和约束条件对压装高能炸药燃烧转爆轰过程的影响.结果表明,压装高能炸药难以发生燃烧转爆轰,点火药药量从1.5 g增至3.0 g时,炸药的反应强度有所提高,但对燃烧转爆轰的影响较小.在强约束条件下,该压装炸药能基本实现燃烧转爆轰,爆轰诱导距离约为545 mm.

Experimental Study on Deflagration-to-detonation Transition in Pressed High-density Explosives

The characteristics of deflagration-to-detonation transition(DDT) in the pressed high-density explosives with mass fraction of 95% and dnsity of 1.86 g·cm~(-3) was measured using electrical pins and pressure sensors. The effect of amount of black power and confinement condition on DDT process of pressed high-density explosive was studied. The results show that it is very difficult to obtain the apparent transition in the pressed explosives and the transition of the pressed explosive is little affected with the change of the mass of black powder which increased from 1.5 g to 3.0 g. The phenomenon of deflagration-to-detonation transition is achieved under the strong confinement condition in the explosive and the detonation-induced distance is about 545 mm.