电磁波在磁流变液中透射行为的理论研究  

THEORETICAL STUDY OF TRANSMITTIVITY OF ELECTROMAGNETIC WAVE IN MAGNETORHEOLOGICAL FLUIDS

作　　者：范吉军[1] 余南辉[2] 徐雅强[1] 

机构地区：[1]武汉工业学院数理科学系,湖北武汉430023 [2]武汉工业学院机械工程系,湖北武汉430023

出　　处：《武汉工业学院学报》2008年第1期101-104,共4页Journal of Wuhan Polytechnic University

基　　金：湖北省自然科学基金资助项目(2007ABA086)

摘　　要：利用磁流变液在外加磁场的作用下,其内部结构发生改变,其介电常数和磁导率也将发生改变,建立了电磁波穿透磁流变液的理论模型,推导出了电磁波透射率的基本表达形式。理论模拟显示:电磁波透射率随磁流变液介电常数的增加而减小;随磁流变液磁导率的增加而增加;随磁流变液厚度的增加而减小。理论分析认为在外加磁场作用下,磁流变液结构转变致介电性能和磁导率的变化是导致电磁波透射率可调控的主要原因。In this paper, the basic expression for the transmittivity of electromagnetic wave in magnetorheologieal fluids is deduced. The theoretical model shows： the total transmittivity of electromagnetic wave decreases as the dielectric constant of magnetorheologieal fluids grows; it increases as the permeability of magnetorheological fluids grows and it decreases as the thickness of magnetorheologieal fluids grows. The theoretical analysis gives the conclusion： with the influence of external magnetic field, the dielectric property and permeability of magnetorheological fluids vary as the result of the structural change, thus it results in the controllable behavior of the transmittivity of electromagnetic wave.

关 键 词：磁流变液 电磁波透射率 智能材料 

分 类 号：O441.4[理学—电磁学] TB381[理学—物理]