Empirical estimate of detonation parameters in condensed explosives

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Abstract
Based on the available data base on the detonation parameters of existing explosives, an observation was made that by proper normalization with the dynamic pressure - ρoD2 the Chapman-Jouguet states of all explosives converge to a single generic point in the pressure-specific volume plane. With the exception of very few explosives, this point in P-V plane has a variance of less than 1 %. The pressure-particle velocity (P-Up) plot of all Chapman-Jouguet states revealed a simple quadratic relationship between P and Up which, together with the nondimensional identities of the generic point, led to a simple relationship between the initial density (ρo) of an explosive and its detonation velocity (D). Thus, having the values of ρo and D of any explosive, one can easily estimate all of its detonation parameters (PCJ, UCJ, VCJ, and ΓCJ) with an accuracy of less than 3%. However, if the detonation velocity is also not known, it too can be estimated quite accurately, increasing the margin of uncertainty to about 10%.

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