The Simulation And Analysis Of Coupling About Electromagnetic Pulse Acting On Shielding Cavity With Holes

The research of the ultra wide band and high power pulse radiation belongs to a kind of the theoretical research in foundation category.Ultra-wideband electromagnetic pulse has high frequency and Large energy,what is more,it has a strong destructive and functional interference.so these function need to adopt a reasonable electromagnetic shielding device to reduce electromagnetic pulse radiation of electronic equipment.This paper first analyzes the propagation of electromagnetic waves,electromagnetic interference patterns and the laws of electromagnetic interference coupling. Secondly it use finite element method numerical analysis method to solve the problem of electromagnetic,and it use computer simulation software for different situations aperture numerical analysis,what is more we can obtaine that electromagnetic pulse with the different external conditions different simulation curves. The results show that electromagnetic pulse hole coupling effects have an different impact with different intensity of electromagnetic pulse, the shape of the gap,the size and location.Finally experimental studies were carried out about aperture coupling problems of shielding cavity. In the experiment,electromagnetic pulse radiation were imposed on the car and computer which were all working.By measuring the data of experiment, Observing operation of car and computer.We can know by detection and analysis that intense electromagnetic pulse can damage shielding cavity though aperture,as the simulation part of the same conclusions.