Abstract

A low-parameter equation of state of aluminum is constructed based on the proposed dependence of the Grüneisen coefficient on the specific volume and temperature. The characteristics of the state of aluminum in the region of high pressures and temperatures are determined: zero and normal isotherms; heat capacity; isentropic bulk compression modulus; the family of shock adiabats corresponding to different initial densities; secondary compression and discharge curves; and the speed of sound. The calculated values are close to the available experimental data. This indicates the adequacy of the proposed approach to the construction of a thermodynamically consistent equation of state of aluminum before three- to fourfold compression.

中文翻译：

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铝的低参数状态方程

摘要

根据建议的Grüneisen系数对比容和温度的依赖关系，构造了铝的低参数状态方程。确定了高压和高温区域中铝的状态特征：等温线为零和正常；等温线为零。热容量 等熵体积压缩模量 对应于不同初始密度的冲击绝热体家族；二次压缩和排放曲线；和声音的速度。计算值接近可用的实验数据。这表明所提出的方法在三到四倍压缩之前构造铝的热力学一致状态方程是足够的。