不同加载压力下炸药冲击起爆过程实验和数值模拟研究
Experimental and Numerical Study on the Shock Initiation of PBXC03 Explosive under the Different Loading Pressure
查看参考文献19篇
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文摘
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采用炸药平面透镜爆轰加载及空气与隔板综合衰减技术,建立基于锰铜压阻传感器的一维拉格朗日实验分析系统,得到了3种加载压力下两种颗粒度PBXC03炸药冲击起爆不同拉格朗日位置的压力历史,以及加载压力对炸药冲击起爆过程的影响规律。采用DYNA2D程序,对两种颗粒度PBXC03炸药的冲击起爆过程进行数值模拟,计算结果与实验结果趋势一致。结果均表明:加载压力减小,炸药中前导冲击波速度增长变慢,压力增长变缓,炸药的到爆轰距离增加。数值模拟得到的两种颗粒度PBXC03炸药起爆压力和到爆轰距离的关系与文献[15]的POP图曲线吻合较好,验证了文献[14]建立的PBX炸药冲击起爆细观反应速率模型的合理性。 |
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其他语种文摘
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The shock initiation experiments on the PBXC03 explosives in two different formulations, namely,the medium and the coarse one,are performed to obtained in-situ manganin piezoresistive pressure gauge data at various shock pressure. The loading technique of explosive plane-wave lens and the attenuation technique produced by both air-gap and Al-gap are used in the one-dimensional Lagrangian experimental system. The Numerical simulation on the shock initiation of the two kinds of PBXC03 explosives are performed by using the two-dimensional hydrodynamics software DYNA2D. The computational propagation trajectory and pressure growth process of the shock front agree well with the experimental data, and the computational run-distance-to-detonation points show good agreement with previously published Pop-plot data,which confirms that the mesoscopic reaction rate model used in this paper is reasonable. |
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来源
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兵工学报
,2013,34(3):283-288 【核心库】
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DOI
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10.3969/j.issn.1000-1093.2013.03.005
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关键词
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爆炸力学
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冲击起爆
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拉格朗日测量技术
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PBX炸药
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加载压力
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地址
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1.
北京理工大学, 爆炸科学与技术国家重点实验室, 北京, 100081
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国防科学技术大学理学院技术物理研究所, 湖南, 长沙, 410073
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1000-1093 |
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学科
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力学 |
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基金
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国家自然科学基金重点项目
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文献收藏号
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CSCD:4819572
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