Volume 7, Issue 1, March 2019, Page: 1-9
Analysis of Squeeze Films Between Rough Circular Plates Lubricated with Rabinowitsch Fluids
Udaya Pratap Singh, Department of Mathematics, Rajkiya Engineering College, Sonbhadra, India
Received: May 12, 2019;       Accepted: Jun. 10, 2019;       Published: Jun. 25, 2019
DOI: 10.11648/j.ajma.20190701.11      View  117      Downloads  25
Abstract
The present theoretical work investigates the combined impacts of non-Newtonian (pseudoplastic and dilatant) lubricants and surface roughness on the performance of squeeze films lubrication between two rough circular plates. The modified Reynolds equation has been derived on the basis of Christensen’s stochastic theory of hydrodynamic lubrication for rough surfaces. The lubricant model adopted for the analysis is Rabinowitsch fluid model – an experimentally verified fluid model for lubricated bearing systems. Two types of one-dimensional roughness patterns (radial and azimuthal) have been considered in the analysis. An asymptotic solution for squeeze film pressure, load carrying capacity and squeeze film time are obtained. The numerical results for dimensionless film pressure, load carrying capacity and film squeezing time have been calculated for various values of fluid and operating parameters. The results for dimensionless film pressure, load capacity and squeezing time of the lubricant film have been discussed with clear graphical presentation for different values of parameters of pseudoplasticity and roughness. It was observed that the radial roughness decreases the film pressure, load capacity and squeezing time of lubricant, while increased values of these properties were observed for azimuthal roughness. It was also observed that the pseudoplastic lubricants decrease the film pressure and load capacity, while the dilatant lubricants increase these properties. Also, the variations in these results are highly significant.
Keywords
Surface Roughness, Circular Plates, Squeeze Film, Non-newtonian Fluids
To cite this article
Udaya Pratap Singh, Analysis of Squeeze Films Between Rough Circular Plates Lubricated with Rabinowitsch Fluids, American Journal of Mechanics and Applications. Vol. 7, No. 1, 2019, pp. 1-9. doi: 10.11648/j.ajma.20190701.11
Copyright
Copyright © 2019 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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