密闭空间内不同炸药爆源的能量输出结构及与目标作用研究

Study on the energy output characteristics and action with objects of different explosives in the confined field

对钝化黑索今(RDX)、含铝炸药(RDX/Al)、一次引爆型燃料空气炸药(SEFAE)在爆炸容器和爆炸水池中爆炸波的能量输出结构进行了实验研究。用TVD格式数值模拟了带平板封头爆炸容器的内部爆炸载荷的分布规律。并对在不同爆炸载荷作用下,容器典型位置的应变进行了测量。结果表明:(1)密闭空间内,RDX/Al(90/10)和SEFAE体系具有后燃效应;(2)在本实验条件下,平板封头与罐体结合处的载荷最大;(3)SEFAE产生的爆炸载荷对容器的作用最小,钝化RDX和RDX/Al(90/10)两者相当。3种炸药产生应变的频谱相似,强度略有差别;(4)在本实验的条件下,爆炸载荷的结构不是应变增长的主要原因。

The experimental research was carried out on the energy output characteristics of insensitive RDX, RDX/A1 and SEFAE in the explosion chamber and under water. Numerical simulation was conducted to study the internal blast loading of explosion chamber with flat end using TVD schemes. Strains on several typical positions on the wall of the chamber were measured under the different internal blast loadings. Results show that： （1） In the confined space RDX/A1 and SEFAE have after-burning effect; （2） In the experiment condition the biggest blast loading appears at the joint point of flat end and cylinder; （3） Effect of blast loading by SEFAE on explosion chamber is the lowest and those by insensitive RDX and RDX/A1 are the same. The compositions of frequencies of strains of different explosives are similar and there is a slight difference of intensity; （4） The structure of blast loading is not the main reason for strain growth.