An Electrorheological Fluid in Squeeze Mode

摘要: Electrorheological (ER) fluids may be regarded as smart materials, in the sense that their mechanical properties can affected by an applied electrical field. This paper describes experiments performed a unit containing circular plates which are placed parallel, with ER fluid (silicone oil dispersed plastic spheres) between them, so is forced radial direction when move towards each other. termed “squeeze mode operation.” Force obtained at least one order of magnitude larger than shear (plates moving parallel to other). Results show damping well stiffness A constitutive equation derived, describing force function displacement and velocity plates. Models micro-mechanical behaviour proposed. They provide efficient tool for interpreting test results predictions shown agree these. Only DC fields were studied. The respons...