Electronic edition ISSN 1574-0579

Static and dynamic study of ferrofluid lubricated wide exponential slider bearing

R. C. Shah

Department of Applied Mathematics, Faculty of Technology and Engineering, The Maharaja Sayajirao University of Baroda, Vadodara -- 390 001, Gujarat State, India

Abstract
In designing hydrodynamic bearings it is known that their static and dynamic characteristics play a key role. With this aim, the present paper discusses these characteristics for the wide exponential slider bearing considering squeeze velocity and ferrofluid (FF) lubricant using a static constant transversely strong magnetic field. By implementing a small perturbation technique, modified Reynolds equations are derived. The results for dimensionless load-carrying capacity ([(W)]_s) are studied for static performances, whereas the results for dimensionless stiffness coefficient (K) and damping coefficient (D) are studied for dynamic performances. By comparing with previous research based on conventional lubricants, higher values of [(W)]_s, K and D are predicted for a higher volume concentration of the magnetic particles in FF. Tables 3, Figs 7, Refs 16.