| BIC实验的数值模拟研究 |
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| 引用本文： | 赵梓君,毕世华.BIC实验的数值模拟研究[J].北京理工大学学报,2015,35(6):556-559. |
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| 作者姓名： | 赵梓君 毕世华 |
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| 作者单位： | 北京理工大学宇航学院,北京,100081;北京理工大学宇航学院,北京,100081 |
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| 摘 要： | 为研究低速撞击作用下炸药点火机理,采用非线性动力学LS-DYNA程序和Visco-SCRAM本构模型数值模拟弹道撞击室实验. 计算得到了5.35 m/s初始撞击条件下炸药发生点火反应,与文献中的实验结果比较吻合. 计算结果表明,炸药整体温升并不能导致其点火反应,而裂纹面摩擦生热形成热点能使炸药发生点火反应,计算结果可为低速撞击条件下炸药装药发生非冲击点火反应机理提供新的依据和支撑.
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| 关 键 词： | 弹道撞击室实验 整体热 热点 |
| 收稿时间： | 2013/11/15 0:00:00 |
Numerical Simulation on Ballistic Impact Chamber Test |
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| ZHAO Zi-jun and BI Shi-hua.Numerical Simulation on Ballistic Impact Chamber Test[J].Journal of Beijing Institute of Technology(Natural Science Edition),2015,35(6):556-559. |
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| Authors: | ZHAO Zi-jun and BI Shi-hua |
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| Institution: | School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China |
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| Abstract: | To study ignition mechanism of explosive under low velocity, code of LS-DYNA and Visco-SCRAM model were taken as numerical simulation on ballistic impact chamber test. The ignition reaction was attained at the initial velocity of 5.35 m/s which was consistent with test results from literature. The results show that the bulk rise of temperature wasn't mechanism of explosive ignition, but hot spots from cracks frictional were mechanism of ignition. The results provide new basis and support for non-shock ignition of explosive under low impact. |
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| Keywords: | ballistic impact chamber bulk heat hot spot |
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