Transient Characteristics of the Yield Surface of Electrorheological Clutch

The characteristic of transient yield surface in electrorheological clutch has been studied. It shows that the characteristics of clutch are dependent on the parameterβ, which is in the yield stress formula of ERF, when extra electric field was applied suddenly. In the case ofβ>2, the yield surface generates from the inner cylinder. In the case ofβ<2, the yield surface generates from the outer cylinder. The direct numerical results deriving from the Crank-Nicoson finite difference method with the regulation parameter model are also presented.