Optimization of magneto-rheological damper:

                           Magnetorheological Fluid Dampers (MR damper) have provided technology that has enabled effective semi-active control in a number of real world applications like vibration isolation of systems etc. This paper throws light on the design optimization of a high-efficiency magnetorheological (MR) damper based on the non-dimensional damping coefficientsfor various damper geometries to reduce the vibrations in the tool. The MR damper is composed of a core, a wound coil, and a cylinder-shaped flux return. The core and flux return form the annulus through which the MR fluid flows.  The MR damper was constrained within a cylindrical volume of fixed height and diameter. Within this volume, candidate geometries were constructed on the basis of the number of wire coils desired in the valve. These candidate geometries were imported into anANSYS magnetic finite element analysis (FEA) routine and the magnetic flux densities through the MR damper was calculated. We have fabricated and found experimentally that the magnitude of the vibration has been reduced by 30% than the existing damper..