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利用LS-OPT软件自动标定DNAN/RDX熔注炸药JWL状态方程参数

本站小编 Free考研考试/2021-12-21

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利用LS-OPT软件自动标定DNAN/RDX熔注炸药JWL状态方程参数
Automatic Calibration of JWL Parameters for DNAN/RDX Melt-Cast Explosive Using LS-OPT Software
投稿时间:2019-11-15
DOI:10.15918/j.tbit1001-0645.2019.286
中文关键词:DNAN基熔注炸药JWL状态方程参数数值计算自动标定
English Keywords:DNAN based melt-cast explosivesJWL state equation parametersnumerical calculationautomatic calibration
基金项目:国家自然科学基金资助项目(11772060)
作者单位E-mail
周霖北京理工大学 爆炸科学与技术国家重点实验室, 北京 100081
刘凯北京理工大学 爆炸科学与技术国家重点实验室, 北京 100081
张向荣北京理工大学 爆炸科学与技术国家重点实验室, 北京 100081zhangxr@bit.edu.cn
苗飞超北京理工大学 爆炸科学与技术国家重点实验室, 北京 100081
闫波甘肃银光化学工业集团有限公司, 甘肃, 白银 730900
白玉奇北京奥信化工科技发展有限责任公司, 北京 100083
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中文摘要:
爆轰产物状态方程是预估炸药做功能力的重要手段. 为拟合JWL状态方程参数,使用铜和钨两种阻抗相差较大的金属飞片进行炸药驱动飞片实验,得到两组飞片自由面中心点速度-时间曲线. 使用试错法及LS-OPT软件自动标定两种方法标定了钨飞片工况下的DNAN基熔注炸药(DNAN/RDX 40/60)JWL状态方程参数,试错法得到结果的计算曲线与实验曲线对比误差为16.86%,自动标定的误差为3.04%. 再使用自动标定得到的参数对炸药驱动铜飞片的过程进行数值模拟,与铜飞片的实验曲线进行对比,误差为4.60%. 研究表明,LS-OPT软件自动标定的方法可用于标定DNAN基熔注炸药JWL状态方程参数,与传统拟合方法相比,可避免进行大量的人工计算,得到的结果更为准确.
English Summary:
The state equation of detonation product is an important method for estimating the working capacity of explosives. In order to fit the parameters of JWL state equation, experiments on flyers driven by explosives were conducted by using copper and tungsten, two metals with large impedance differences. The parameters of the JWL state equation of DNAN based melt-cast explosives (DNAN/RDX 40/60) under the condition of tungsten flyer were calibrated by trial and error method and LS-OPT software automatic calibration. The error of the calculated curve obtained by trial and error method was 16.86% compared with that of the experimental curve, and the error of automatic calibration was 3.04%. The parameters obtained by automatic calibration were used to simulate the process of driving the copper flyer, and the experimental curves were compared with those of the copper flyer. The error was 4.60%. The research shows that the LS-OPT software automatic calibration method can be used to calibrate the parameters of the JWL state equation of DNAN based melt-cast explosives. Compared with the traditional fitting method, it can avoid a lot of manual calculations and obtain more accurate results.
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