| 爆炸去磁脉冲功率发生器的实验和理论计算 |
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| 引用本文： | 伍俊英,陈朗,冯长根.爆炸去磁脉冲功率发生器的实验和理论计算[J].爆炸与冲击,2007,27(5):398-404. |
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| 作者姓名： | 伍俊英 陈朗 冯长根 |
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| 作者单位： | 1.北京理工大学爆炸科学与技术国家重点实验室，北京 10008 |
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| 摘 要： | 设计了两种结构的爆炸去磁脉冲功率发生器:炸药透镜平面波冲击加载圆柱形磁体和中心装药冲击加载圆环形磁体，磁体材料都采用Nd2Fe14B永磁体。进行了爆炸冲击加载实验，测量了爆炸去磁脉冲发生器的输出电流、电压以及Nd2Fe14B永磁体中的冲击波速度。通过对爆炸去磁脉冲功率发生器基本原理的分析，建立了感生电动势的理论计算方法。用Maxwell 3D电磁场分析软件，对Nd2Fe14B永磁体进行了静磁场分析，给出了Nd2Fe14B永磁体的磁场强度分布规律。实验结果表明:爆炸去磁脉冲功率发生器每匝线圈能够产生约67 V的感生电动势,对于0.56 H的电感负载能够输出脉宽78.3 s、峰值1 212 A的脉冲电流。
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| 关 键 词： | 爆炸力学 脉冲功率技术 爆炸去磁 稀土永磁体 冲击波 |
| 文章编号： | 1001-1455（2007）05-0398-07 |
| 修稿时间： | 2006-04-04 |
Experiments and theoretical calculation of explosive-driven shock wave ferromagnetic generators |
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| WU Jun-ying,CHEN Lang,FENG Chang-gen.Experiments and theoretical calculation of explosive-driven shock wave ferromagnetic generators[J].Explosion and Shock Waves,2007,27(5):398-404. |
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| Authors: | WU Jun-ying CHEN Lang FENG Chang-gen |
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| Affiliation: | 1.State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China |
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| Abstract: | Two types of ferromagnetic generators were designed. For one type, a cylinder Nd2Fe14B rare-earth permanent magnet was used as working body, and a plane shock wave forms the detonation of the explosives moved in the cylinder along the direction of its axis. For the other type, a ring Nd2Fe14B magnet was charged with high energy explosive in the center hole, and the explosives were initiated with two ends at the same time. The initial magnetic flux distribution of the Nd2Fe14B magnet was simulated by the Maxwell 3D code of the electromagnetic analysis software. The calculating method of the electromotive force from the ferromagnetic generators was given. The detonation tests of generators were carried out. The output current and voltage of generators were measured. The shock wave velocity in Nd2Fe14B magnet was measured. The results show that the ferromagnetic generators designed are capable of producing a high current pulse of up to 1 212 A, with the width of 78.3 μs, and the electromotive force obtained is about 67 V/turn. |
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| Keywords: | mechanics of explosion pulse power technology explosive demagnetization rare-earth magnets shock wave |
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