Electrorheological(ER) fluid is a mixed fluid , which consists of a fluid, non-elctronic particles, and some additive. ER fluid causes the strong interest in the material field due to the particular Electrorheological effect. This paper discusses the mechanical property of ER fluid and presents a constitutive model to describe the rheological property with an applied electronic field based on a simple mechanical partten.The experimental result agrees with the model of ER fluid.
