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Advances in Tribology
Volume 2012 (2012), Article ID 148281, 12 pages
http://dx.doi.org/10.1155/2012/148281
Research Article

Magnetic Fluid-Based Squeeze Film Behaviour in Curved Porous-Rotating Rough Annular Plates and Elastic Deformation Effect

1Department of Mathematics, BVM Engineering College-Vallabh Vidyanagar, Gujarat, Anand 388120, India
2Department of Mathematics, Sardar Patel University, Anand, Gujarat, Vallabh Vidyanagar 388120, India

Received 7 December 2011; Revised 20 June 2012; Accepted 16 July 2012

Academic Editor: Patrick De Baets

Copyright © 2012 M. E. Shimpi and G. M. Deheri. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Efforts have been directed to study and analyze the squeeze film performance between rotating transversely rough curved porous annular plates in the presence of a magnetic fluid lubricant considering the effect of elastic deformation. A stochastic random variable with nonzero mean, variance, and skewness characterizes the random roughness of the bearing surfaces. With the aid of suitable boundary conditions, the associated stochastically averaged Reynolds' equation is solved to obtain the pressure distribution in turn, which results in the calculation of the load-carrying capacity. The graphical representations establish that the transverse roughness, in general, adversely affects the performance characteristics. However, the magnetization registers a relatively improved performance. It is found that the deformation causes reduced load-carrying capacity which gets further decreased by the porosity. This investigation tends to indicate that the adverse effect of porosity, standard deviation and deformation can be compensated to certain extent by the positive effect of the magnetic fluid lubricant in the case of negatively skewed roughness by choosing the rotational inertia and the aspect ratio, especially for suitable ratio of curvature parameters.