Modeling of mechanical behavior of a rotating magnetorheological damper

The issue of this paper is analysis and evaluation of the mechanical behavior of an optimized rotating magnetorheological damper. The present damper consists of one rotating disc that placed in the closed cylindrical box and filled with magnetorheological fluid and rotates about its axis with constant speed. By applying an electric current through the coil which is wrapped about the cylinder, a magnetic field is produced inside the cylinder. It leads to change the nominal viscosity in magnetorheological fluid and consequently changes the resistant torque against disc rotation. This behavior can conduct us to manage damping ratio by controlling the input electric current. For the purpafter optimizing the geometric parameters of a designed damper, the effect of electric current intensity on mechanical behavior of damper is modeled.