THE COMBINED EFFECT OF MAGNETIC FLUIDS WITH COUPLE STRESSES, VARIABLE VISCOSITY AND VELOCITY-SLIP ON THE LUBRICATION OF FINITE JOURNAL BEARINGS
Tyrone D. Dass1, Sreedhara Rao Gunakala2* and Donna M.G. Comissiong3
1Foundations and Prior Learning, University of Trinidad and Tobago,
2,3Department of Mathematics and Statistics, the University of the West Indies, St. Augustine, Trinidad and Tobago
1Email: tyrone.dass@utt.edu.tt
2Email: sreedhara.rao@sta.uwi.edu* (Corresponding author)
3Email: donna.comissiong@sta.uwi.edu
Abstract:
In this paper, we examine the combined effect of a non-Newtonian couple-stress lubricant, and a magnetic fluid, together with velocity-slip and piezo-viscosity, has on the lubrication characteristics of a finite journal bearing. Using the Stokes micro-continuum theorem and the Barus formula with an artificial (homogeneous) slip surface, we investigate the load-carrying ability, pressure distribution, and frictional coefficient of the bearing. Our results indicate that the piezo-viscosity parameter improves the maximum magnetic and hydrodynamic pressures of the journal bearing. The combined effect also significantly enhances the bearing characteristics.
Keywords: couple-stress lubricant, finite journal bearing, magnetic fluid, variable viscosity, velocity-slip.
https://doi.org/10.47412/YNFJ8443
