A New Method for Calculating the Equation of State from Shock Compression DataOptimization of Grneisen Coefficient
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摘要: 本文给出了一种用冲击压缩数据计算Grneisen物态方程参数的方法。它使Grneisen系数沿实验冲击绝热线的计算值与晶格振动理论的计算值达到最优拟合,给出了23种金属的冷能,冷压公式中的0K、Q和q以及Grneisen系数的结果。用这些参数算得的冲击绝热线与实验冲击绝热线之间的平均相对偏差在1%以内。
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关键词:
- 冲击绝热线 /
- 物态方程 /
- Grneisen系数 /
- 最优化
Abstract: In this paper, a new method for calculating the parameters in the Mie-Grneisen equation of state from shock compression data is presented. This method gives the best fit of the Grneisen coefficients calculated along the experimental shock adiabatic with the results from the vibration theory of crystal lattices. The results of 0K, Q, q and Grneisen coefficients for twenty-three materials are shown. The average relative derivation between the shock adiabatic calculated with these parameters and the experiments is within 1%.-
Key words:
- shock adiabatic /
- equation of state /
- Grneisen coefficient /
- optimization
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