CAJ | 학술논문

频率选择表面(FSS)被广泛用于各个领域.很多情况下,频率选择表面会受到外力的作用,例如:嵌在集成桅杆外壳或者雷达吸波一承载复合材料结构中的频率选择表面.文章研究了在力的作用下,频率选择表面的电磁性能是否会改变、如何改变.首先,分析了力影响频率选择表面电磁性能的机理;然后,使用力学有限元法和电磁学有限元法分析了不同大小、不同方向的力作用下,频率选择表面电磁性能改变的模式和大小.计算获得的电磁性能-力关系曲线显示:电磁性能的改变主要表现为电磁波响应频率的偏移和透射带宽的改变;在不同方向的力作用下,电磁性能的改变程度不一样.为了降低力对频率选择表面电磁性能的影响,在布置频率选择表面时,应使受力的方向避开频率选择表面的最敏感方向,同时带圆角的开孔型频率选择表面值得研究.
빈솔선택표면(FSS)피엄범용우각개영역.흔다정황하,빈솔선택표면회수도외력적작용,례여:감재집성외간외각혹자뢰체흡파일승재복합재료결구중적빈솔선택표면.문장연구료재력적작용하,빈솔선택표면적전자성능시부회개변、여하개변.수선,분석료력영향빈솔선택표면전자성능적궤리;연후,사용역학유한원법화전자학유한원법분석료불동대소、불동방향적력작용하,빈솔선택표면전자성능개변적모식화대소.계산획득적전자성능-력관계곡선현시:전자성능적개변주요표현위전자파향응빈솔적편이화투사대관적개변;재불동방향적력작용하,전자성능적개변정도불일양.위료강저력대빈솔선택표면전자성능적영향,재포치빈솔선택표면시,응사수력적방향피개빈솔선택표면적최민감방향,동시대원각적개공형빈솔선택표면치득연구.
The frequency selective surface (FSS) is applied widely.In many circumstances,the FSS is subjected to all kinds of forces, such as the FSS embedded in the shell of integrated mast and microwave absorber structure.In this paper,a research is conducted to find out whether and how the electromagnetic property of FSS changes when the FSS is subjected to force.Firstly,an analysis is conducted on the mechanism of the influence of force on the electromagnetic property of FSS.Then,by using both mechanics finite element method and electromagnetics finite element method,an investigation is conducted to find out the pattern and magnitude of the change of FSS's EM property caused by forces various in direction and magnitude.The curve of EM property-force gotten shows:the change mainly lies in the excursion of the resonant frequency and the altering of the bandwidth;the sensitivity of EM property to the force alters greatly when the direction of force changes.In order to depress the influence of the force on the EM property,the disposal of the FSS should ensure the direction,in which the forces are loaded,to avoid the ones which may make greater influence occur;the FSS with round-cornered aperture is needed to be researched.