Energy Release Characteristics of CL-20-based Composite Explosives in Confined Spaces

doi:10.12382/bgxb.2021.0163

Abstract

Abstract: The quasi-static pressure generated by the implosion of explosive samples with R_e of 0.35-1.0 was tested experimentally to study the explosion energy release characteristics of CL-20-based composite explosives in confined spaces. Based on the ideal gas adiabatic model and aluminum particle gasification combustion equation, the explosion energy release processes of explosive samples with different R_e were calculated and analyzed. The result shows that the quasi-static pressure of the composite explosive increases first and then decreases with the increase in R_e, and the quasi-static pressure reaches the maximum with R_e of 0.83. The energy released from the composite explosive in 20 ms also shows a trend of increasing first and then decreasing with the increase in R_e. The quasi-static pressure generated by the explosion of explosives in confined space are mainly determined by the actual energy released by the explosive and the time scale of energy release within a certain period of time. AUTODYN is used to simulate the action process of explosion of explosive samples with different R_e in confined space, and the maximum relative deviation of the calculated value of quasi-static pressure from the experimental results is 4.7%.

Key words: confinedspace, CL-20-basedcompositeexplosive, quasi-staticpressure, energyrelease

CLC Number:

TQ564

LIU Zheng, NIE Jianxin, XU Xing, ZHU Yingzhong, LIU Pan, GUO Xueyong, YAN Shi, ZHANG Tao. Energy Release Characteristics of CL-20-based Composite Explosives in Confined Spaces[J]. Acta Armamentarii, 2022, 43(3): 503-512.

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