水下爆炸法测量含铝炸药后燃效应

为了研究含铝炸药的后燃效应,以钝黑铝(AⅨ-Ⅱ)、某含铝炸药(JAL)两种炸药为研究对象,设计使用了一种用于增强贫氧炸药后燃效应、可充填不同气体的双层试验装置。采用水下爆炸测试方法,对试验装置中的装药分别在不同压力(0.1,0.6,4.6 MPa)氧气、空气和氮气条件下的爆炸能量输出进行了研究,计算得到了冲击波能、气泡能和总能量,并给出一种计算炸药后燃效应能量的方法。结果表明,实验数据平行性较好,距爆心同一距离、同一水平但不同方位处的水下爆炸测试参数一致,在测试范围内冲击波压力峰值符合爆炸相似律;该试验装置可有效地增强含铝炸药后燃效应,在实验研究范围内,后燃效应释放的能量最高值达到了爆热的78%。使用水下爆炸的方法,结合设计的试验装置,可以对含铝炸药的后燃效应进行测量。

Measurement of Afterburning Effect of Aluminized Explosives by Underwater Explosion Method

In order to investigate the afterburning effects of aluminized explosives,the explosives of AⅨ-Ⅱand JAL were studied,and a double-layer test device filled with different gases and designed for enhancing the afterburning effects of under-oxidized explosives was used.The explosion energy outputs of the charges in the test device filled with oxygen,air,and nitrogen under different pressures were studied by underwater explosion test method.The shock wave energy,bubble energy and total energy were calculated respectively,and a method for calculating the energy of afterburning effect was introduced.The experimental results show that these experiments have excellent parallelism,the underwater explosion parameters are the same when they are at the same distance from the center of explosion,at the same depth and different directions,and the shock wave peak pressures accord with explosion similarity laws in the measuring range.This test device can enhance the afterburning effect of aluminized explosive significantly,in the studied range,the energy released by afterburning effect reaches the maximum value of 78% of the detonation heat.The underwater explosion method combined with the designed test device can measure the afterburning effect of aluminized explosives.