Research on the characteristics of explosion power parameters of the blast-fragmentation warhead with 3,4-dinitrofurazanfuroxan (DNTF) charge.

Studying the explosion power characteristics of new energetic materials has important reference value for warhead design. In order to study the propagation characteristics of shock wave and the driving performance to fragment of the 3,4-dinitrofurazanfuroxan (DNTF) explosive under typical blast-fragmentation warhead structure, the static explosion test of the blast-fragmentation warhead with equal volume of DNTF and trinitrotoluene (TNT) charge was conducted. By constructing a multi-parameter test system, the shock wave pressure and movement parameters of the fragment were tested. The results show that the enhancement of shock wave power during DNTF charge explosion is mainly reflected in peak and impulse, but the positive pressure duration is basically the same as that of TNT explosion. In addition, the peak of total pressure and free field pressure are at least 1.7 times greater than that of TNT charge, and the peak and specific impulses of ground-reflected pressure are at least 1.5 times and 1.36 times greater than those of the TNT charge, respectively. The closer the distance from the blasting center, the more obvious is the enhancement of shock wave power during DNTF explosion, but the attenuation characteristics of various shock waves are different. The ratio of initial velocity kinetic energy and effective damage area of fragments under DNTF charge are 1.548 times and 1.65 times greater than that of TNT charge, respectively.