Performance analysis of textured journal bearing operating with and without nanoparticles in the lubricant

Purpose This study aims to investigate the performance improvement of journal bearing by applying the arc-shaped textures on various regions of bearing expressly full, second half and pressure increasing regions operating with and without nanoparticles in the lubricant. Design/methodology/approach T...

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Bibliographic Details
Published in:Industrial lubrication and tribology 2022-10, Vol.74 (9), p.1028-1039
Main Authors: Byotra, Deepak, Sharma, Sanjay
Format: Article
Language:English
Subjects:
Additives
Aluminum oxide
Bearing strength
Coefficient of friction
Copper oxides
Finite element method
Friction
Influence
Investigations
Journal bearings
Load carrying capacity
Lubricants
Lubricants & lubrication
Magnetic fields
Nanoparticles
Parameters
Pressure distribution
Regression models
Reynolds equation
Rheology
Viscosity
Yield stress
Zinc oxides
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Summary:Purpose This study aims to investigate the performance improvement of journal bearing by applying the arc-shaped textures on various regions of bearing expressly full, second half and pressure increasing regions operating with and without nanoparticles in the lubricant. Design/methodology/approach The Reynolds equation is solved numerically by using the finite element method to obtain static performance parameters such as load-carrying capacity (LCC) and coefficient of friction (COF), which are then compared with untextured bearing at eccentricity ratios of 0.2 to 0.8. Aluminum oxide (Al2O3) and copper oxide (CuO) nanoparticles additives are used, and viscosity variation due to the addition of additives in the base lubricant is computed for considering the range of temperatures 50 to 90°C at a weight fraction of 0.1 to 0.5% by using an experimentally validated regression model. Findings The results indicate that the maximum LCC and the lower COF are found in the pressure-increasing region. A maximum increase of 34.42% is observed in the pressure-increasing region without nanoparticles, and furthermore, with the addition of Al2O3 and CuO nanoparticles in lubricants in the same region, the LCC increased to 21 and 24%, respectively. Originality/value Designers should use optimal parameters from the present work to achieve high bearing performance.
ISSN:0036-8792
1758-5775
0036-8792
DOI:10.1108/ILT-03-2022-0078