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A Simple Method for Calculating the Detonation Pressure of Ideal and Non-Ideal Explosives Containing Aluminum and Ammonium Nitrate

Jafari M., Keshavarz M. H.

Central European Journal of Energetic Materials

2017

Vol. 14, no. 4

966--983

A general and simple method has been developed for calculating the detonation pressure of different kinds of ideal and non-ideal explosives containing aluminum (Al) and ammonium nitrate (AN). The new model can be applied to CHNO and CHNOFCl explosives in pure form or as mixtures as well as non-ideal mixed explosives including Al and AN. It can also be used for different plastic bonded explosives (PBXs). There is no need for any prior knowledge about the measured or calculated properties of the explosive. The only data needed are the standard enthalpy of formation and the loading density of the desired explosive. The predicted detonation pressures were compared with other predictive methods and outputs of BKWS-EOS, in both full and partial equilibrium. Different statistical parameters as well as cross validation parameters showed that the new model is precise, accurate, well-defined, and robust for predicting the detonation pressures of CHNOFCl(Al/AN) energetic materials.

An Improved Simple Method for the Calculation of the Detonation Performance of CHNOFCl, Aluminized and Ammonium Nitrate Explosives

Keshavarz M. H., Kamalvand M., Jafari M., Zamani A.

Central European Journal of Energetic Materials

2016

Vol. 13, no. 2

381--396

An improved simple method is presented for calculation of the detonation velocity of CHNO and CHNOFCl explosives, as well as non-ideal explosives containing aluminum (Al) and ammonium nitrate (AN) additives. In contrast to the available complex computer codes, where the estimated detonation velocities of non-ideal explosives for equilibrium and steady state calculations show significant differences from the measured data, this simple method gives more reliable results. Suitable decomposition paths are suggested in which the partial interaction of Al with the gaseous products and the decomposition of AN are assumed for composite explosives containing Al/AN additives. The predicted detonation velocities using the new method are good compared to those from one of the well-known empirical methods and from computer codes using full and partial equilibrium of Al/AN.