密度对压装B炸药燃烧转爆轰性能的影响

以常规武器中常用的B炸药为研究对象，采用电探针及压力传感器测量技术，在相同的实验条件下分别对3种不同密度固体压装B炸药（m（TNT）；m（RDX）=40：60）的燃烧转爆轰性能进行了实验研究。B炸药的密度范围为1．597～1．681g／cm^3。实验结果表明，在相同的约束条件下，炸药密度对其燃烧转爆轰（DDT）性能有较大影响。不同密度炸药的DDT性能不同。较低密度的炸药更容易发生DDT现象，固体压装B炸药存在一个燃烧转爆轰的临界密度值。在较强的约束条件下（45号钢管，内径20mm，外径64mm，长500mm），密度为1．597g／cm^3的B炸药发生了DDT现象，诱导爆轰距离为295～310mm。

The Effect of Density in Composition B on Deflagration-Detonation-Transition Behavior

The composition B applied widely in conventional weapons was chosen as the object of this research.By means of electrical pin and pressure gauge techniques,an experimental study was made to explore the different mechanisms at work in the deflagration-detonation-transition(DDT) of three kinds of 40/60-TNT/RDX-composition B with different density in the range of 1.597 to 1.681g/cm~3.The experimental results showed that there was a critical density for transition to detonation at certain confinement condition.Different densities resulted in different results,transition to detonation was more easier for low density explosive.Under strong confinement condition(steel tube with an inner diameter of 20mm and an outer diameter of 64mm and length 500mm),a DDT was obtained for the composition B with density of 1.597g/cm~3,and the inducement distance was 295 to 310mm.