Performance investigation of micro-pocketed textured pad thrust bearing

Purpose The purpose of this paper is to conceive a new surface texture incorporating a tiny shape among the micro-pockets (with circular, rectangular, trapezoidal and triangular cross-sections) and dimples (cylindrical, hemispherical and ellipsoidal) for exploring to enhance the maximum possible per...

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Bibliographic Details
Published in:Industrial lubrication and tribology 2018-11, Vol.70 (8), p.1388-1395
Main Authors: Aggarwal, Shipra, Pandey, R.K
Format: Article
Language:English
Subjects:
Bearing strength
Cavitation
Coefficient of friction
Computer simulation
Cross-sections
Dimpling
Film thickness
Finite difference method
Friction
Heat
Iterative methods
Laplace equation
Load
Load carrying capacity
Lubricants & lubrication
Performance enhancement
Researchers
Reynolds equation
Surface layers
Texture
Thrust bearings
Velocity
Viscosity
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Summary:Purpose The purpose of this paper is to conceive a new surface texture incorporating a tiny shape among the micro-pockets (with circular, rectangular, trapezoidal and triangular cross-sections) and dimples (cylindrical, hemispherical and ellipsoidal) for exploring to enhance the maximum possible performance behaviors of sector shape pad thrust bearing. Design/methodology/approach Numerical simulation of hydrodynamically lubricated sector shape textured pad thrust bearing has been presented incorporating thermal and cavitation effects. The coupled solution of governing equations (Reynolds equation, film thickness expression, viscosity–temperature relation, energy equation and Laplace equation) has been achieved using finite difference method and Gauss–Seidel iterative scheme. Findings With new textured pads, higher load-carrying capacity and lower coefficient of friction are obtained in comparison to plain sector shape pad. Texture pattern comprising square cross-sectional pockets yields higher load-carrying capacity and lower coefficient of friction in comparison to other cross-sectional shapes (circular, trapezoidal and triangular) of pockets considered herein. Originality/value This study reports a new texture, which involves micro-pockets of square cross-sectional shapes to improve the performance behavior of sector shape pad thrust bearing. About 75 per cent increase in load carrying capacity and 42 per cent reduction in coefficient of friction have been achieved with pad having new texture in comparison to conventional pad.
ISSN:0036-8792
1758-5775
DOI:10.1108/ILT-10-2017-0302