基于基因遗传算法和γ律状态方程的JWL状态方程参数计算

发布时间：2018-06-05 06:57

本文选题：爆炸力学 + 基因遗传算法　；参考：《兵工学报》2017年S1期

【摘要】：JWL状态方程参数的快速、准确计算对新型炸药研究具有重要意义。给出了利用基因遗传算法根据C-J条件和Hugoniot关系式确定的3个相容方程,对炸药爆轰产物γ律状态方程p-V曲线进行拟合,得到JWL状态方程参数的计算方法。研究结果表明,拟合确定的JWL状态方程pV曲线比γ律状态方程p-V曲线更接近标准的JWL状态方程p-V曲线。利用AUTODYN软件,采用拟合得到的5种炸药的JWL状态方程和标准JWL状态方程对密闭空间内爆炸进行数值模拟,两者超压值误差不超过5%.通过数值模拟证明了所提出的基于基因遗传算法和γ律状态方程的JWL状态方程参数计算方法是合理的。
[Abstract]:The fast and accurate calculation of the parameters of JWL equation of state is of great significance to the study of new explosives. The p-V curve of 纬 law equation of state of explosive detonation product was fitted by genetic algorithm according to C-J condition and Hugoniot equation of state, and the parameters of JWL equation of state were calculated. The results show that the fitted p-V curve of the JWL equation of state is closer to the standard p-V curve of the JWL equation of state than the p-V curve of the 纬 -law equation of state. By using AUTODYN software, the JWL equation of state and the standard JWL equation of state of five kinds of explosives are used to simulate the explosion in closed space. The error of overpressure between them is not more than 5. It is proved by numerical simulation that the proposed method based on genetic algorithm and 纬 -law equation of state is reasonable for calculating the parameters of JWL equation of state.
【作者单位】：北京理工大学爆炸科学与技术国家重点实验室;
【基金】：国家自然科学基金项目(11325209) 科学挑战专题资助项目(TZ2016001)
【分类号】：TQ560.1

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