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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/10862
Title: A study of misaligned micropolar lubricated membrane compensated hybrid journal bearing system
Authors: Sharma, Satish Chandra
Nicodemus E.R.
Ram N.
Published in: Journal of Tribology
Abstract: The present work aims to analytically study the performance of misaligned four-pocket, membrane compensated, hybrid journal bearing system operating with micropolar lubricant. In the present study, the flow characteristic of the lubricating oil containing additives and contaminants has been modeled using Erigen's micropolar theory. The journal misalignment which may occur as a result of noncentral loading, improper assembly, shaft deflection due to elasticity and thermal distortions, etc. has been accounted for in the present study by defining a pair of misalignment parameters in vertical and horizontal directions (i.e., δ and σ).The modified Reynolds equation governing the flow of micropolar lubricant in the clearance space of a misaligned bearing has been solved using FEM and Newton Raphson method along with the appropriate boundary conditions. The numerically simulated results suggest that the effect of journal misalignment is to cause degradation in bearing performance, whereas the influence of micropolar effect of lubricant is to enhance the bearing performance. Therefore, it is imperative to account for the effect of misalignment and lubricant behavior during the design process in order to generate accurate bearing characteristics data. © 2011 American Society of Mechanical Engineers.
Citation: Journal of Tribology (2011), 133(3): -
URI: https://doi.org/10.1115/1.4004456
http://repository.iitr.ac.in/handle/123456789/10862
Issue Date: 2011
Keywords: hybrid journal bearing
membrane restrictor
micropolar lubricant
misalignment
ISSN: 7424787
Author Scopus IDs: 8142901100
36239087600
46061314700
Author Affiliations: Sharma, S.C., Tribology Laboratory, Department of Mechanical and Industrial Engineering, Indian Institute of Technology, Roorkee, Uttarakhand 247667, India
Nicodemus, E.R., Tribology Laboratory, Department of Mechanical and Industrial Engineering, Indian Institute of Technology, Roorkee, Uttarakhand 247667, India
Ram, N., Tribology Laboratory, Department of Mechanical and Industrial Engineering, Indian Institute of Technology, Roorkee, Uttarakhand 247667, India
Corresponding Author: Nicodemus, E.R.; Tribology Laboratory, Department of Mechanical and Industrial Engineering, Indian Institute of Technology, Roorkee, Uttarakhand 247667, India; email: rajasekhar_mvgr@yahoo.co.in
Appears in Collections:Journal Publications [ME]

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