低频电磁脉冲对复杂电大目标耦合效应
Coupling effect of low-frequency electromagnetic pulse on complex electrically large object
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摘要: 针对复杂电大目标电磁脉冲耦合效应缺乏定量研究的问题,基于时域有限差分方法(FDTD)建立了一套电磁脉冲耦合效应建模与评估分析流程,开展了低频电磁脉冲激励下的仿真试验,获取和分析了特性数据,进而提出了一种表面加载透明导电材料的低频电磁脉冲激励防护方法。试验结果表明:基于功率密度的易损性分析具有良好的工程适用性,而且防护方法对低频电磁脉冲激励具有较好的屏蔽效能。Abstract: The coupling effect of the low-frequency nonnuclear electromagnetic pulse (EMP) on the electrically large complex object is analyzed. A method of modeling and analysis for the coupling effect is presented based on finite-difference time-domain (FDTD) method. A simulation experiment of low-frequency EMP excitation is carried out on a model with a scale of 1∶1, the coupling characteristic data are analyzed, and a protective method is proposed. The results show the engineering applicability of the modeling and analysis method and the shielding efficiency of the transparent conductive material to coupling effect.
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