| 双破片同时撞击对B炸药冲击起爆的数值模拟研究 |
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| 引用本文： | 贾宪振,陈松,杨建,王建灵.双破片同时撞击对B炸药冲击起爆的数值模拟研究[J].高压物理学报,2011,25(5). |
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| 作者姓名： | 贾宪振 陈松 杨建 王建灵 |
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| 作者单位： | 西安近代化学研究所; |
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| 摘 要： | 采用Lee-Tarver点火增长模型对单钨珠撞击带壳B炸药的过程进行了计算，所得到的不同尺寸钨珠引爆炸药的阈值速度与实验结果吻合良好。数值模拟了双钨珠同时撞击带壳B炸药的过程，计算了破片引爆炸药的阈值速度，分析了炸药的点火增长过程。结果表明：双破片同时撞击炸药时，引爆阈值速度随着破片间距的增大呈抛物线规律增大；当破片间距较大且撞击速度略高于阈值速度、双破片同时撞击时，炸药内部爆轰波的初始形态随破片速度而变化。
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| 关 键 词： | 爆炸力学 冲击起爆 破片撞击 阈值速度 点火增长模型 |
| 收稿时间： | 2010-06-07; |
Numerical Study of Explosives Initiation by Simultaneous Impact from Two Fragments |
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| JIA Xian-Zhen,CHEN Song,YANG Jian,WANG Jian-Ling.Numerical Study of Explosives Initiation by Simultaneous Impact from Two Fragments[J].Chinese Journal of High Pressure Physics,2011,25(5). |
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| Authors: | JIA Xian-Zhen CHEN Song YANG Jian WANG Jian-Ling |
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| Institution: | Xi'an Modern Chemistry Institute, Xi'an 710065, China |
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| Abstract: | The explosives initiation by simultaneous impact from two fragments was simulated based on Lee-Tarver ignition and growth model by using finite element code LS-DYNA.In order to verify the simulation method and parameters,the courses that tungsten spheres with different diameters impacted tantalum covered Composition B charges were simulated,and the critical velocity to ignite Composition B was gained,which accorded well with the experimental results.The problems that two tungsten spheres with three kinds of... |
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| Keywords: | mechanics of explosion shock initiation fragment impact critical velocity ignition and growth model |
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