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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/18032
Title: Influence of micropolar lubricants on the performance of an orifice compensated rough hole-entry hybrid journal bearing
Authors: Sharma S.C.
Ram N.
Published in: Proceedings of Society of Tribologists and Lubrication Engineers Annual Meeting and Exhibition 2012
Abstract: The influence of surface roughness on the performance of fluid film bearings has attracted the attention of several researchers in recent times. Usually, the design of hole-entry journal bearing is based on the assumption that both the journal and bearing surfaces are perfectly smooth, however in industrial applications all bearing surfaces are rough to some extent. Thus, the assumption of a smooth bearing surface is not valid for the accurate prediction of the bearing performance. As a consequence of this, the performance of journal bearings gets affected. Further, the lubricant used to lubricate the bearings is additized in order to improve their performance. Lubricant containing a suspension of particles having individual motion, no longer exhibit Newtonian behavior and is characterized as micropolar lubricants. In the present study, the lubricating oil used to lubricate the hole-entry journal bearing has been modeled as micropolar lubricant. The average modified Reynolds equation for micropolar lubrication has been solved by using the Finite Element Method. The study indicates that for a rough bearing lubricated with micropolar lubricant, the value of minimum fluid film thickness is more vis-a-vis smooth bearing lubricated with Newtonian lubricant.
Citation: Proceedings of Society of Tribologists and Lubrication Engineers Annual Meeting and Exhibition 2012, (2012), 113- 117. St. Louis, MO
URI: http://repository.iitr.ac.in/handle/123456789/18032
Issue Date: 2012
Keywords: Hybrid journal bearings
Micropolar lubricant
Orifice restrictor
ISBN: 9.78E+12
Author Scopus IDs: 8142901100
46061314700
Author Affiliations: Sharma, S.C., Department of Mechanical and Industrial Engineering, Indian Institute of Technology, Roorkee, Uttarakhand 247 667, India
Ram, N., Department of Mechanical and Automation Engineering, Indira Gandhi Institute of Engineering and Technology, GGSIPU, Kashmere Gate, Delhi 110006, India
Corresponding Author: Sharma, S.C.; Department of Mechanical and Industrial Engineering, Indian Institute of Technology, Roorkee, Uttarakhand 247 667, India; email: sshmefme@iitr.ernet.in
Appears in Collections:Conference Publications [ME]

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