Calculation of detonation parameters for explosive mixtures with inert additions

Abstract

Calculation of the change in detonation parameters on making additions is a simpler problem than complete thermodynamic description of the expansion products. For qualitative estimation of the role of the individual additive material properties on detonation parameters for mixed charges with description of explosive disintegration products, use is made of the polytropic record of isoentropy. If the additive is considered inert and it has no heating capacity, the specific volume and internal energy for the mixture of explosion products and additive is assumed to be a summation of the corresponding values for the components. Also, compression of many metals and salts, due to their high acoustic stiffness at the pressures being considered, may be assumed to be quasi-isoentropic at the pressure considered, which leads to fulfillment of the original assumption. The error in calculating detonation velocity from the correlation relationship is 0.5-1.5% for compositions with low porosity, and it reaches 2-3% for porous and strongly diluted compositions.