Development of new model for high explosives detonation parameters calculation

Abstract

The simple semi-empirical model for calculation of detonation pressure and velocity for CHNO explosives has been developed, which is based on experimental values of detonation parameters. Model uses Avakyan’s method for determination of detonation products' chemical composition, and is applicable in wide range of densities. Compared with the well-known Kamlet's method and numerical model of detonation based on BKW EOS, the calculated values from proposed model have significantly better accuracy

The Effect Of Aluminum Particle Size On Combustion Characteristics Of Propellant

“…• high explosives without other components (TNT, RDX, HMX, PETN, TET, HNS, nitromethane, nitroglycerine and DATB at different initial densities, or 27 different high explosives), • explosive mixtures of RDX, HMX or PETN with TNT (32 high explosives), • explosive mixtures of RDX, HMX or PETN with polymer binders (15 high explosives). The analysis of calculated detonation parameters using equations (1) and (2) from semiempirical model showed very good correlation with experimental data [3]. Correlation coefficient of calculated and experimental values was R 2 = 0.98 for all considered explosive compositions.…”

“…The average difference of calculation results for considered high explosives was 1.9% for detonation velocity and 4.5% for detonation pressure ( Table 1). The described semi-empirical model shows better accuracy than well-known Kamlet's method [1] and can be successfully applied in wider range of initial densities [3]. The best correlation is observed for considered explosive mixtures with TNT.…”

“…Many authors have managed to develop models for D and p calculations. There are many models based on semi-empirical approach [1,2,3]. Such models are based on simplified view on detonation process, but have surprisingly very high precision of calculation results for CHNO high explosives with initial densities within certain range.…”

“…XW is used on personal computers with operating system WindowsXP ® . The semi-empirical model [3] is based on the fact that the experimental values of the detonation parameters are proportional to the initial density of the explosive [1]. Experiments show that detonation velocity has linear dependence on initial density for all explosive charges above a critical diameter.…”

Predictive model of explosive detonation parameters from an equation of state based on detonation velocity

“…The search for new substances and compositions for highperformance explosives has motivated the development of several models to predict the velocity (D) and pressure (P) of explosive detonations. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17] Some models use equations derived from the ideal detonation theory (IDT) to formulate thermochemical equations of state (EoS) that determine the composition and thermodynamics of detonation products, e.g., the Becker-Kistiakowsky-Wilson (BKW) 2 and the Jacobs-Cowperthwaite-Zwisler-3 (JCZ3) 6 EoS. The fact that these EoS depend on parameters whose values are calibrated from experimental data has led to several reparametrizations of the same EoS, e.g., BKW-C, 5 BKW-S, 9 BKW-RR, 13 JCZS, 9 and JCZ3-J.…”