Equation of State for Calculating RDX Temperature

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Abstract

In the work on the example of hexogen, an approach to determining the constants in the equation of state of molecular crystals was tested, which allows calculating the isothermal compression pressure. When implementing this approach, an algorithm was proposed to recalculate experimental or calculated data on isothermal compression to the shock adiabat of hexogen, which makes it possible to obtain pressure values at the shock wave front that are in good agreement with known experimental data. When calculating the temperatures of shock-wave compression, an analysis of various models of the dependence of heat capacity at a constant volume on temperature was carried out, which made it possible to significantly simplify the equations of state.

About the authors

M. A. Biryukova

Russian Federal Nuclear Center – Zababakhin All-Russia Research Institute of Technical Physics

Email: bma_vniitf@mail.ru
Snezhinsk, Russia

D. V. Petrov

Russian Federal Nuclear Center – Zababakhin All-Russia Research Institute of Technical Physics

Snezhinsk, Russia

Y. M. Kovalev

South Ural State University (National Research University)

Chelyabinsk, Russia

M. A. Shestakov

South Ural State University (National Research University)

Chelyabinsk, Russia

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