Title :
Linking Porosity and Tortuosity to the Performance of a Magneto-Rheological Damper Employing a Valve Filled With Porous Media
Author :
Robinson, R. ; Hu, W. ; Wereley, N.M.
Author_Institution :
Dept. of Aerosp. Eng., Univ. of Maryland, College Park, MD, USA
fDate :
6/1/2010 12:00:00 AM
Abstract :
The effects of porous media selection on the performance of a porous-valve-based magnetorheological (MR) bypass damper are evaluated. Important media parameters affecting the damper performance (i.e., porosity and tortuosity) are identified using flow analysis. The relationship between the controllable force of the damper and porous valve characteristics is studied for packed beds of cylindrical rods and spheres. Damper performance is compared between the different porous media configurations, with primary attention given to the maximum controllable force and damping coefficient.
Keywords :
damping; flow through porous media; intelligent materials; magnetic fluids; magnetorheology; porosity; shock absorbers; valves; vibration control; cylindrical rods; damping coefficient; magnetorheological bypass damper; packed beds; porosity; porous media configurations; porous valve characteristics; smart material; spheres; tortuosity; Coils; Damping; Force control; Joining processes; Magnetic analysis; Magnetic fields; Magnetic liquids; Magnetic materials; Shock absorbers; Valves; Damping; magneto-rheological damper; smart materials;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2010.2043648
