Study on optimization of the circumferential and axial wavy geometrical configuration of hydrodynamic journal bearing

Pang, Xiaoping; Chen, Jin; Hussain, Sinan H.

doi:10.1007/s12206-013-0915-z

Cited by 10 publications

(10 citation statements)

References 18 publications

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“…Furthermore, it was found that at m < 1 there is an increase in LCC with maximum enhancement found at m = 0.6. The results are further in agreement with results published by Pang et al (2013) which used a GA algorithm optimized that at axial waviness number m = 0.633 there is a maximum increase in bearing load capacity. Due to the presence of the axial waviness, there is a reduction in COF for m < 1 with a maximum reduction in COF found at m = 0.6.…”

Section: Resultssupporting

confidence: 91%

“…Sheriff and Osman (2010) compared the load capacity of bearing having surface waviness like grooves with the plain bearing and found that due to surface waviness bearing load-capacity was enhanced with a sinusoidal wavy profile. Pang et al (2013) analyzed the configuration of the waviness of journal bearing in the circumferential and axial direction by using a genetic algorithm and optimize the waviness number in the axial direction to improve load capacity over plain bearing. Quiñonez and Morales-Espejel (2016) presented a deterministic solution method to study the influence of roughness with low amplitude in slider bearings.…”

Section: Introductionmentioning

confidence: 99%

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Impact of surface waviness on the static performance of journal bearing with CuO and CeO₂ nanoparticles in the lubricant

Bangotra

Sharma

2022

ILT

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Purpose This study aims to investigate the impact of surface waviness on the static performance parameters of hydrodynamic journal bearings operating with lubricants containing copper oxide (CuO) and cerium oxide (CeO2) nanoparticles. Design/methodology/approach The static performance parameters of bearings with surface waviness and the addition of nanoparticles in lubricants were calculated using the nondimensional form of Reynolds equation and finite element method. Static performance parameters are calculated at different waviness numbers in the circumferential, axial and both directions at various wave amplitudes with variable viscosities of lubricants with nanoparticles using the viscosity equation forming a relationship between the relative viscosity, temperature and weight fraction of nanoparticles in lubricant developed from the experimental results. Findings The computed results indicate that the impact of waviness on the bearing surface enhances the load capacity, reduces friction coefficient, and is more effective in the circumferential direction than in the axial direction or in both directions. The addition of CuO and CeO2 to the lubricant enhanced its viscosity which further improved the steady-state parameters of the wave bearing. Research limitations/implications This study is based on a numerical technique, which has significant limitations, and the simulated results must be tested experimentally. Practical implications The current findings will be beneficial for designers to improve the performance of hydrodynamic journal bearings. Originality/value The calculated results demonstrate that the combined effect of the surface waviness on bearings and the addition of nanoparticles to lubricants can greatly increase the performance of hydrodynamic journal bearings.

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Section: Resultssupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Impact of surface waviness on the static performance of journal bearing with CuO and CeO₂ nanoparticles in the lubricant

Bangotra

Sharma

2022

ILT

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“…The lubricant film thickness h and average viscosity m have been given by Pang et al (2013) as follows:…”

Section: Reynolds Equationmentioning

confidence: 99%

Investigations on influence of groove shapes for the journal bearing in high-speed and heavy-load press system

Chen

Sun

Cao

2018

ILT

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Purpose The purpose of this study is to investigate the hydrodynamic characteristics of journal bearings in a high-speed and heavy-load press system by considering thermal influence and cavitation. Design/methodology/approach A proper and effectual computational method is presented for steady-state analysis of fluid interaction in a rotor-bearing press system by combining computational fluid dynamics techniques. Findings The influences of eccentricity ratio, rotational speed and oil-film thickness on the hydrodynamic behavior of the journal bearing are studied. Originality/value The computational method can be used for creating a precise lubrication design for a journal bearing of a lubrication system.

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“…Sheriff et al 7 compared the load capacity of bearings having surface waviness like grooves with plain bearings and found that due to surface waviness, bearing load capacity was enhanced with a sinusoidal wavy profile. Pang et al 8 analyzed the configuration of the waviness of journal bearings in the circumferential and axial directions by using a genetic algorithm and optimizing the waviness number in the axial direction to improve load capacity over plain bearing. Wang et al 9 conducted a computational analysis of the influence of surface waviness on aerostatic journal-bearing performance using the finite difference method (FDM).…”

Section: Introductionmentioning

confidence: 99%

Performance analysis of journal bearing having surface waviness operating under misaligned condition

Bangotra,

Sharma,

Taufique

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part J:

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In this present study, the effect of surface waviness on the performance of journal bearing operating in misaligned conditions has been investigated. The journal’s misaligned conditions in the present analysis are taken about the circumferential, the axial, and both axes. For computing the pressure of lubricant inside the bearing, the finite element method has been applied to solve the Reynolds equation and thus static parameters are obtained. The static parameters, that is, load carrying capacity and coefficient of friction are evaluated at different waviness variables and are compared with misaligned journal bearing without surface waviness. It is observed that misalignment considered in both axes has the most severe effect on static performance parameters as compared to misalignment only in the circumferential or axial axis. With the increase in circumferential waviness number up to n = 5, the load-carrying capacity increases, and the coefficient of friction decreases under high eccentricity ratios. Change in waviness amplitude also impacts the bearing performance. Axial waviness always deteriorates the bearing performance. Combined waviness increases the load carrying capacity and decreases the coefficient of friction when circumferential waviness number n = 5 and axial waviness number m = 2. The highest performance enhancement ratio is attained at an eccentricity ratio of 0.8 with a circumferential waviness number n of 5, axial waviness number m of 2, and dimensionless waviness amplitude [Formula: see text] of 0.075.

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Study on optimization of the circumferential and axial wavy geometrical configuration of hydrodynamic journal bearing

Cited by 10 publications

References 18 publications

Impact of surface waviness on the static performance of journal bearing with CuO and CeO₂ nanoparticles in the lubricant

Impact of surface waviness on the static performance of journal bearing with CuO and CeO₂ nanoparticles in the lubricant

Investigations on influence of groove shapes for the journal bearing in high-speed and heavy-load press system

Performance analysis of journal bearing having surface waviness operating under misaligned condition

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Study on optimization of the circumferential and axial wavy geometrical configuration of hydrodynamic journal bearing

Cited by 10 publications

References 18 publications

Impact of surface waviness on the static performance of journal bearing with CuO and CeO2 nanoparticles in the lubricant

Impact of surface waviness on the static performance of journal bearing with CuO and CeO2 nanoparticles in the lubricant

Investigations on influence of groove shapes for the journal bearing in high-speed and heavy-load press system

Performance analysis of journal bearing having surface waviness operating under misaligned condition

Contact Info

Product

Resources

About

Impact of surface waviness on the static performance of journal bearing with CuO and CeO₂ nanoparticles in the lubricant

Impact of surface waviness on the static performance of journal bearing with CuO and CeO₂ nanoparticles in the lubricant