Energy Release behind the Jouguet Point during Detonation of Plasticized PETN from the Results of Experiments by the T-20 Method
I. V. Kuz'mitskii, V. M. Bel'skii, A. N. Shuikin, V. V. Shutov, R. A. Ibragimov, V. V. Pul', I. A. Sviridova, and A. L. Stadnik
Institute of Experimental Physics, Federal Nuclear Center
Sarov, 607190 Russia
Keywords: T-20 method, plasticized PETN, calculation of the velocity of shells using the EGAK and MASTER (Izumrud) codes, energy release behind the Jouguet point, estimates of the velocity and pressure from analytical dependences
Abstract
The trajectory of motion of a copper shell, the velocity of its flight, and the pressure of the explosion products on the inside of the copper shell were simulated. It was found that there is a significant difference in pressure behavior between experiments and calculations performed using the standard equations of state of explosives and explosion products. Most likely, there is a significant contribution of kinetic processes to the energy release behind the Jouguet point. In this case, the conversion of explosives to explosion products apparently include not only exothermic reactions but also endothermic processes.
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