Effect of circumferential groove sinusoidal waviness on the load carrying capacity of journal bearing with bio-based lubricant

Sheriff, Jamaluddin Md.; Osman, Kahar; Asral, Asral

doi:10.1109/cssr.2010.5773788

Cited by 4 publications

(3 citation statements)

References 6 publications

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“…Ostayen et al 6 investigated the effect of random track surface waviness on the thrust-bearing load capacity and flow rate. 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.…”

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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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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show abstract

“…Rasheed (1998) examined the journal bearing's performance with surface waviness on bearing bush in circumferential, axial and both directions and observed that with an increase in wave amplitude, the bearing load-capacity increases, and in short bearings, the effect of waviness is more significant. 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.…”

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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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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“…Ostayen et al 15 investigated the effect of random track surface waviness on the thrust bearing load capacity and flow rate. Sheriff et al 16 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 17 analysed the configuration of the waviness of journal bearings in the circumferential and axial directions by using a genetic algorithm and optimising the waviness number in the axial direction to improve load capacity over plain bearing.…”

Section: Introductionmentioning

confidence: 99%

Impact of partial surface waviness on the tribological performance of hydrodynamic journal bearing

Bangotra

Sharma

2022

Lubrication Science

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In this paper, the static performance analysis of journal bearing having full and partial surface waviness has been presented. The surface waviness is to be considered in the full, first half, second half, and pressure-increasing and decreasing regions of the bearing for analysis. The effect of surface waviness is considered by modifying the lubricant flow governing Reynolds equation with the film thickness equation and it is solved with the finite element method to get performance parameters like bearing load capacity, friction coefficient, and so forth operating under eccentricity ratios range of 0.2-0.8. The waviness geometrical parameters like waviness numbers and amplitudes are also considered in circumferential, axial, and both directions in the selected regions. The maximum performance has been found for waviness in the full and pressureincreasing region in the circumferential direction at a high eccentricity ratio.

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Effect of circumferential groove sinusoidal waviness on the load carrying capacity of journal bearing with bio-based lubricant

Cited by 4 publications

References 6 publications

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

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

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

Impact of partial surface waviness on the tribological performance of hydrodynamic journal bearing

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Effect of circumferential groove sinusoidal waviness on the load carrying capacity of journal bearing with bio-based lubricant

Cited by 4 publications

References 6 publications

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

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

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

Impact of partial surface waviness on the tribological performance of hydrodynamic journal bearing

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Product

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