Specifics of the detonation of mixtures of powerful high explosives with W and Pb high-density inert additives

Abstract

Results of experimental and theoretical studies of the unusual detonation properties of mixtures of high explosives (HEs) with high-density inert additives (W and Pb) were analyzed and systematized. Typical examples of the nonideal detonation of composite explosives for which the measured detonation pressure is substantially lower while the detonation velocity is higher than the values calculated within the framework of the hydrodynamic model, with the specific heat ratio for the detonation products being ∼6–8, are presented. Mathematical models capable of qualitatively and quantitatively describing the specificity of the propagation of detonation in HE-W mixtures. Mechanisms of formation of anomalous pressure and mass velocity profiles, which explain why the correlation between the Chapman-Jouguet pressure for HE-W and HE-Pb mixtures, the velocity of the free surface of duralumin target, and the depth of the dent imprinted in steel witness plates, are described.