| 戚俊成,高子博,马博翔,范宏辉,刘登峰,张惠芳.强电磁干扰下引信体屏蔽效能特性[J].装备环境工程,2024,21(8):9-16. QI Juncheng,GAO Zibo,MA Boxiang,FAN Honghui,LIU Dengfeng,ZHANG Huifang.Shielding Efficiency Characteristics of Fuze under Strong Electromagnetic Interference[J].Equipment Environmental Engineering,2024,21(8):9-16. |
| 强电磁干扰下引信体屏蔽效能特性 |
| Shielding Efficiency Characteristics of Fuze under Strong Electromagnetic Interference |
| 投稿时间：2024-06-29 修订日期：2024-08-12 |
| DOI：10.7643/issn.1672-9242.2024.08.002 |
| 中文关键词: 引信 电磁防护 电磁干扰 电磁屏蔽 屏蔽效能 麦克斯韦方程组中图分类号:TJ430.1 O441.4 文献标志码:A 文章编号:1672-9242(2024)08-0009-08 |
| 英文关键词:fuze electromagnetic protection electromagnetic interference electromagnetic shielding shielding efficiency Maxwell equations |
| 基金项目:国家自然科学基金(62201522)；山西省基础研究计划资助项目(202203021212157). |
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| Author | Institution |
| QI Juncheng | School of Information and Communication Engineering,Taiyuan 030051, China |
| GAO Zibo | School of Mechanical and Electrical Engineering, North University of China, Taiyuan 030051, China |
| MA Boxiang | School of Mechanical and Electrical Engineering, North University of China, Taiyuan 030051, China |
| FAN Honghui | School of Mechanical and Electrical Engineering, North University of China, Taiyuan 030051, China |
| LIU Dengfeng | School of Mechanical and Electrical Engineering, North University of China, Taiyuan 030051, China |
| ZHANG Huifang | School of Mechanical and Electrical Engineering, North University of China, Taiyuan 030051, China |
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| 中文摘要: |
| 目的 针对引信系统外壳上的开孔和贯通线引起的电磁兼容问题，分析外部强电磁干扰对引信内部的耦合规律，研究开孔参数对引信屏蔽效能的影响。方法 根据麦克斯韦方程组和边界条件等经典电磁理论，利用有限元仿真分析软件，研究外部强电磁干扰下，引信上不同的尺寸的通孔对引信内部电场分布的影响，进一步提出相应的屏蔽措施。结果 当引信上开20 mm孔洞时，当外界电磁波频率大于圆孔的截止频率时，引信内部电场强度最强可以达到4 000 V/m，减小引信上的孔洞后，引信内部的电场强度整体下降3 000 V/m左右。在使用导电橡胶填充通信孔洞后，引信内部电场强度急剧下降，增加了套管之后，腔体内部的电场强度显著降低，屏蔽效果非常显著。结论 引信上的开孔的形状和大小等因素均对屏蔽效果有较大影响，在引信生产和设计中，均需采用导电橡胶填充、增加套管和多个小孔代替一个大孔等措施提高引信的电磁兼容能力。 |
| 英文摘要: |
| In view of the electromagnetic compatibility problem caused by the open hole and through wire on the shell of fuze system, the work aims to analyze the coupling law of external strong electromagnetic interference to the interior of fuze, and study the effect of hole parameters on the shielding efficiency of the fuze. According to the classical electromagnetic theory such as Maxwell equations and boundary conditions, the finite element simulation analysis software was adopted to study the effect of different sizes of through holes on the fuze on the internal electric field distribution under the strong external electromagnetic interference, and the corresponding shielding measures were further put forward. When a 20 mm hole was opened in the fuze and the frequency of external electromagnetic wave was greater than the cut-off frequency of the circular hole, the strongest electric field intensity in the fuze could reach 4 000 V/m. After the hole in the fuze was reduced, the electric field intensity in the fuze decreased by about 3 000 V/m as a whole. After the communication hole was filled with conductive rubber, the electric field intensity inside the fuze dropped sharply, and after the sleeve was added, the electric field intensity inside the cavity dropped significantly, and the shielding effect was remarkable. The shape and size of the open hole on the fuze have great effect on the shielding efficiency. In the production and design of the fuze, it is necessary to fill the hole with conductive rubber, increase the sleeve and several small holes instead of a large hole to improve the electromagnetic compatibility of the fuze. |
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