| 引用本文: | 崔元博,孔德仁,张学辉,等.典型炸药爆炸过程中电磁辐射特性分析.[J].国防科技大学学报,2022,44(6):70-80.[点击复制] |
| CUI Yuanbo,KONG Deren,ZHANG Xuehui,et al.Analysis of electromagnetic radiation characteristics during typical explosives explosion[J].Journal of National University of Defense Technology,2022,44(6):70-80[点击复制] |
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| 典型炸药爆炸过程中电磁辐射特性分析 |
| 崔元博,孔德仁,张学辉,张逸飞 |
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(南京理工大学 机械工程学院, 江苏 南京 210094)
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| 摘要: |
| 设计了一套基于短波全向天线、超宽带全向天线的电磁辐射测量装置,对不同质量TNT爆炸产生的电磁辐射进行测量,通过数据处理得到电磁辐射特性。结果表明,炸药质量对爆炸产生的电磁辐射时域特性有显著影响,质量越大,电磁信号延迟响应越短,持续时间越长,峰值出现时间越早。60 kg TNT爆炸产生的电磁辐射信号频率主要集中在100 MHz以下,在0~50 MHz频段能量最集中,炸药成分对频谱分布的影响最大,不同成分的炸药爆炸产生的电磁辐射频谱分布有明显特异性。炸药爆炸产生的电磁辐射强度呈现与爆心距离较强的相关性,随着距离增大而递减,且递减幅度较大。装药构型和起爆方式会使炸药在爆炸过程中的几何运动模式发生变化,导致爆炸电磁辐射传播呈现非均匀性特征。 |
| 关键词: 炸药 电磁辐射 天线 信号分析 数值模拟 |
| DOI：10.11887/j.cn.202206009 |
| 投稿日期：2020-12-02 |
| 基金项目:国家自然科学基金资助项目(11372143)；国防科工局技术基础科研资助项目(995-14021006010401) |
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| Analysis of electromagnetic radiation characteristics during typical explosives explosion |
| CUI Yuanbo, KONG Deren, ZHANG Xuehui, ZHANG Yifei |
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(School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China)
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| Abstract: |
| A set of electromagnetic radiation measurement devices based on short-wave omnidirectional antennas and ultra-wideband omnidirectional antennas was designed to measure the electromagnetic radiation generated by TNT explosions, and the data was processed to obtain electromagnetic radiation characteristics.The results show that the explosive mass has a significant effect on the time domain characteristics of the electromagnetic radiation generated by the explosion. The greater the mass, the shorter the delayed response of the electromagnetic signal, the longer the duration, and the earlier the peak time. 60 kg TNT explosion generated electromagnetic radiation signal frequency is mainly concentrated below 100 MHz, the most concentrated energy is in the 0～50 MHz band, the explosive composition has the largest effect on the spectrum distribution, and the electromagnetic radiation spectrum distribution generated by different components of the explosive explosion has obvious specificity. Electromagnetic radiation intensity generated by dynamite explosion shows a strong correlation with the distance from the burst center. The intensity decreases with the distance increasing, and the magnitude of the decrease is large. Charge configuration and detonation mode will change the geometric movement pattern of the explosive during the explosion process, resulting in the non-uniformity characteristics of the explosion electromagnetic radiation propagation. |
| Keywords: explosives electromagnetic radiation antenna signal analysis numerical simulation |
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