Thermal equation of state for metals intended for dynamic problems of conductor crushing under electrical explosion

摘要

In the work a simple kvazivirial equation of state for metals intended for electric, hydrodynamic and magnetohydrodynamic model of electric explosion of wires is proposed. Dependence of temperature for the elastic component of pressure is determined. It is shown, that the head component of pressure can be expressed through the known thermodynamic parameters of metals - the coefficient of volumetric thermal expansion and isothermal compressibility. The simplified approach which permits to take indirectly into account the influence of phase transients on the values of the equation coefficients. The accuracy of the proposed equation is evaluated in wide temperature range.