Shock wave specific energy flux density of PBX 9407 explosive

DOI:	10.11809/bqzbgcxb2025.02.018
Keywords:	PBX 9407; equation of state; shock wave; overpressure; specific energy flux density
Abstract:	As the energy source of the blast wave of the warhead, the shock wave characteristics of the mixed explosive have important research significance. Through the simulation analysis of TNT shock wave parameters, energy flux density parameters of explosives at different contrast distances were obtained based on shock wave overpressure, particle velocity, positive pressure time and other parameters, and its specific energy flux density was calculated based on the JWL equation of state of RDX based mixed explosives in the literature, and the impact sweep and specific energy flux density of TNT were compared.The results show that the specific energy flux density is the parameter of work, and it has obvious advantages to compare the shock wave performance of explosives by using the specific energy flux density.The shock wave specific energy flux density and the inverse contrast distance of TNT and RDX based mixed explosives are fitted by cubic polynomial formula, and the parameters are 23 880.5, 51 417.7, -3 382.6 and 28 771.0, 65 866.9, -4 319.0, respectively. Calculation of the specific energy flux density increment at different contrast distances shows that the average specific energy flux density of RDX based mixed explosive is 27.0% higher than that of TNT, and the relative range of the increment value is 6.5%.
Issue:	Vol. 46 No. 2 (2025)
Published:	2025-02-28
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