高能燃烧剂销毁金属壳体装药的安全压力计算

为防止采用高能燃烧剂销毁带金属壳体的装药时发生燃烧转爆轰的现象,分析了装药燃烧转爆轰的机理,研究了装药燃烧时的壳体内部的压力变化情况,结合气体动力学压力关系式,推导了稳定燃烧时的压力计算表达式;以某型防坦克地雷为研究对象,计算了燃烧时的平衡压力,并结合试验分析了开孔直径与压力的变化关系。结果表明:燃烧产物质量生成速率曲线与产物排出速率曲线存在交点时,装药能够维持稳定燃烧,否则极易发生燃烧转爆轰现象。

Safe Pressure Calculation of Explosives with Metal Shell Destroyed by High Energy Combustion Destruction Method

To prevent the occurrence of deflagration to detonation transition when explosives with metal shell were destroyed by the high energy combustion destruction method, mechanism of deflagration to detonation transition was analyzed, and interior pressure change of the shell when the explosives were burning was studied. Aerodynamic pressure relation was combined to deduce the stable combustion pressure calculating expression. One kind of anti-tank mines was used as the subject of research, equilibrium pressure during combustion was calculated. Relationship between the aperture and interior pressure was analyzed according to the experiments. The results show that the explosives could combust steady when intersection of the product formation rate curve and discharge rate curve exists. Otherwise, it is prone to result in the phenomenon of deflagration to detonation transition.