MODELLING AND SIMULATION OF MR DAMPER USING COMSOL

bringing in application of Magnetorheological fluid in it. Due to the controllable characteristics of the material used in the classical hydraulic damper, the design and application of such devices has been area of recent interest. Considering this requirement, classical damper was modified into MR damper by using an external magnet arrangement without any changes in the internal design of the classical damper. The MR damper was modeled using COMSOL and under varying magnetic and excitations, the results were observed using simulations. Computational Methods: In order to estimate the effect of gap and effect of magnetic field on viscosity of MR fluid behavior of the system, a multi physics FEM model has been developed in the Comsol FemlabTM environment(2). In this model nonNewtonian behavior of the MR fluid has been used. In order to get a smoother characteristic the Carreau model has been used .(1)