Abstract
A prototype magnetorheological (MR) damper was manufactured and its performance was studied. The magnetic circuit in the damper was designed to focus magnetic flux into the orifice by combining ferromagnetic and diamagnetic components and illustrating the magnetic flux lines using FEM. The damping force of the MR damper was experimentally measured for sinusoidal excitation under various amplitudes, frequencies and applied magnetic field strengths. The performance of this damper was analytically and experimentally compared with that of a damper which has the same structure except for not setting diamagnetic components around the piston.
