引信隔爆试验内腔气体压力的工程计算

Engineering Evaluation of Gas Pressure of Cavity for Fuze Explosion Interruption Safety Test

该文从真实气体状态方程出发,借鉴内弹道学中的密闭爆发器原理,在建立简化的引信雷管爆炸数学模型的基础上,得到了引信隔爆试验内腔气体压力的计算公式。针对雷管装药提出了炸药力的概念;考虑到雷管爆炸生成固体产物的影响,提出了生成气体质量系数的概念。通过分析计算,给出了引信雷管常用起爆药和猛炸药的炸药力,以及生成气体的质量系数,据此可进行引信雷管在隔爆位置爆炸时最大气体压力的工程计算。实例应用表明,该理论与实测结果符合较好,可用于解决引信隔爆强度的计算。该文研究可为引信隔爆安全性设计提供参考。

Based on the real gas state equation, the principle of closed bomb in interior ballistics and the simplified mathematical model of the exploding detonators at the explosion interruption position in fuze, the formula to calculate the pressure in the cavity of fuze is obtained. The definitions of explosive power for charges and gas product mass coefficient in consideration of the solid product of explosives in detonators are presented. By the analysis and calculation, the values of explosive power and gas product mass coefficient are brought out for explosives in common use in detonators. All these make it possible to carry out the engineering evaluation of the exploded gas pressure of detona- tors at the explosion interrupted position. The application in the cases proves that the above theory consists well with the facts. The theory can also be used to evaluate the explosion interruption strength for fuze. This paper provides reference to the design for fuze explosion interruption safety.