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多元炸药装药冲击起爆的数值模拟

Numerical simulation of shock initiation in multivariate explosive charge
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摘要 对多元炸药装药的冲击起爆过程进行了数值模拟研究,得到了改变炸药装药层叠顺序后的压力时程曲线.通过分析比较发现:当起爆过程从高爆速炸药传入低爆速炸药时,压力波形过渡平稳,在低爆速炸药到达CJ点时会出现短暂的超压爆轰现象;当起爆过程从低爆速炸药传入高爆速炸药时,会出现回爆现象,压力波形出现双峰,这对于被驱动系统的二次加载是有价值的. The shock initiation of multivariate explosive charges is investigated by numerical simulation. The time-histories of pressure are obtained through changing the installation order of charges. It seems from the anal- ysis that : when the process of shock initiation goes from the high-speed explosive to the low, the pressure wave- form transition is smooth, and when the low-speed explosive reaches its C-J point there will be the short over- pressure detonation, when the process of shock initiation goes from the low-speed explosive to the high, the reto- nation phenomenon will appear, the pressure waveform has two peaks, and that is valuable to the twice-loading of the charge system.
出处 《广州大学学报(自然科学版)》 CAS 2012年第3期27-31,共5页 Journal of Guangzhou University:Natural Science Edition
基金 国家自然科学基金项目(10972060)资助
关键词 炸药装药 冲击起爆 数值模拟 explosive charge shock initiation numerical simulation
分类号 O831 [理学]
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