P,V,E,T Equation of State for TATB-Based Explosives

Physical model for shock-wave initiation of detonation of plastic-bounded TATB-based explosive

“…We consider the most common case where the HE is loaded by a shock wave, and then unloaded isentropically. Using the thermal equation of state of the HE [3], we can previously calculate the temperature at the shock front (for each value of the initial density and initial temperature of the HE) and approximate the result by a simple analytical function, for example, by the polynomial For the isentropic unloading behind the shock front, the HE temperature is also previously calculated using the thermal equation of state [3] for the HE and the result is represented as the linear function of the pressure…”

“…As regards the equation of state of the HE used in the present study [3], it was constructed with special emphasis on the correct description of the pressure and energy distributions between the thermal and cold components, in particular, taking into account the strong temperature dependence of the thermal conductivity of the HE, which is characteristic of molecular media. Therefore, the accuracy of calculating the temperature of the shock-compressed HE using the equation of state of [3] should be satisfactory.…”

“…The Mie-Grüneisen equations of state was used for the unreacted explosive [8], the HOM type equation [15] for EPs [23], and the model of [24] was employed to calculate the pressure of the HE-EP mixture. For the heated explosive, it was assumed that its porosity did not change under heating and that the observed density variation was determined by the heat expansion of crystalline TATB [3].…”

“…In the present paper, we propose a temperature model for the kinetics of shock-wave initiation of detonation in plastic-bounded TATB explosive based on the thermal equation of state for TATB [3], the hot-spot model [1], and the hypothesis of an electronic mech- 1 Zababakhin Institute of Technical Physics, Snezhinsk 456770; k.f.grebyonkin@vniitf.ru. anism of energy transfer from hot spots [4].…”

“…HE temperature on the shock adiabat and isentropes: the solid curves refer to calculations using the thermal equation of state for the HE[3], and the dashed curves refer to the temperature on the isentropes calculated using the interpolation formula T (p) = T f + A(p − p f ) (A = 8.0).…”