Mechanical Properties of an Ideal Electrorheological Fluid: Metal-Particle/Insulating Oil System
ZHAO He-ping1,3, LIU Zheng-you1, SHEN Jia-rui2, LIU You-yan1,4
1Department of Physics, 2Department of Polymer Materials, South China University of Technology, Guangzhou 510641
3Department of Physics, Jishou University, Jishou, Hu’nan 416000
4International Centre for Materials Physics, Chinese Academy of Sciences, Shenyang 110015
Mechanical Properties of an Ideal Electrorheological Fluid: Metal-Particle/Insulating Oil System
1Department of Physics, 2Department of Polymer Materials, South China University of Technology, Guangzhou 510641
3Department of Physics, Jishou University, Jishou, Hu’nan 416000
4International Centre for Materials Physics, Chinese Academy of Sciences, Shenyang 110015
Abstract： The electrorheological properties of a model system consisting of metal particles with insulating coating in a dielectric oil are analyzed by extending Rayleigh identity based on a multipole expansion theory. Evaluation of the effective dielectric constant is emphasized. The dependence of the shear stress т on the shear strain θ and the shear modulus G for the electrorheological solid is presented. It is found that the model system shows much higher electrorheological performance than the traditional suspensions.
1999, Vol. 16 
