Effect of texture on hydrodynamic journal bearing performance under starvation lubrication

Li, He; Niu, Junkai

doi:10.1088/2051-672x/acaac0

Cited by 2 publications

(2 citation statements)

References 53 publications

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“…Chen et al (2021aChen et al ( , 2021bChen et al ( , 2021c investigated the impact of surface texture on the dynamic performance of sliding bearings and found that reasonable texture parameters and distribution could reduce friction and increase end discharge, with an optimal texture density and region. Li and Niu (2023) studied the influence of texture on the frictional performance of bearings operating under oil-limited lubrication conditions and concluded that texture could improve load-carrying capacity and operational performance under mild lubrication conditions. Feng et al (2021) researched the fluid dynamic pressure performance of partially grooved bearings under water lubrication conditions and discovered that bearings with both grooves and wall slip exhibited improved lubrication performance compared to bearings without grooves and wall slip.…”

Section: Introductionmentioning

confidence: 99%

“…(2021a, 2021b, 2021c) investigated the impact of surface texture on the dynamic performance of sliding bearings and found that reasonable texture parameters and distribution could reduce friction and increase end discharge, with an optimal texture density and region. Li and Niu (2023) studied the influence of texture on the frictional performance of bearings operating under oil-limited lubrication conditions and concluded that texture could improve load-carrying capacity and operational performance under mild lubrication conditions. Feng et al.…”

Section: Introductionmentioning

confidence: 99%

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Effect of composite textured rough surfaces on the lubrication performance of cylindrical roller bearings

Deng,

Su,

Jin

2024

ILT

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Purpose The purpose of this paper is to study the impact of different types of textures on the friction lubrication performance of cylindrical roller bearings. Design/methodology/approach In the present study, the composite texture hydrodynamic lubrication model that takes into account the effects of surface roughness is established, and the Reynolds equation for the oil film is numerically solved using the finite difference method. The study investigates the oil film carrying capacity and maximum pressure of bearings under two different arrangements of four composite textures and conducts a comparative analysis of the oil film characteristics under various texture parameters and surface roughness levels. Findings When the roughness of the inner texture surface and the contact surface are equal, the bearing capacity of the composite texture is intermediate between the two textures. The impact trend of surface roughness on fluid dynamic pressure effects varies with the type of composite texture; the internal roughness of the texture affects the micro-hydrodynamic pressure action. Composite textures with different depths exhibit improved bearing capacities; elliptical cylindrical parallel and elliptical hemispherical parallel textures perform better when their area densities are similar, while other types of composite textures show enhanced bearing performance as the ratio of their area densities increases. Originality/value This paper contributes to the theoretical investigations and analyses on designing the textured rolling bearings with high lubrication performance. Peer review The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-02-2024-0050

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of composite textured rough surfaces on the lubrication performance of cylindrical roller bearings

Deng,

Su,

Jin

2024

ILT

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Effect of cylindrical micro-pit texture on the performance of misaligned radial journal bearing

Li,

He,

Wang

et al. 2024

Preprint

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In order to study the influence of the circumferential distribution position, axial proportion, depth, inclined angle and area rate of cylindrical micro-pit texture on the lubrication and tribological performance of misaligned radial journal bearing, the mathematical model of friction lubrication of journal bearing is established based on the Reynolds equation, and the oil film pressure under the influence of different micro-pit texture parameters is solved iteratively by finite difference method, and the bearing load carrying capacity, friction force and end leakage of bearing under different texture parameters are calculated. The results are as follows: the bearing load carrying capacity is higher when the cylindrical micro-pit texture is distributed in the boost area and the axial ratio is around 55%; compared with smooth bearing, fully textured bearing and bucking zone micro-pit texture bearing, the coefficient of friction of journal bearing of the micro-pit texture in the boost area journal bearing is lower, and there exists an optimal axial proportion and depth of texture, which make the best friction and lubrication performance of the journal bearing; the micro-pit texture has the dual possibility of weakening and enhancing the bearing load carrying capacity, and the existence of the optimal circumferential and axial ratio, depth and inclined angle of the micro-pit texture make the bearing have higher load carrying capacity with less friction coefficient; the area ratio of cylindrical micro-pit texture is linearly correlated with bearing capacity and friction force; the smaller the degree of misalignment of the bearing, the more beneficial it is to improve the friction and lubrication performance of the bearing when machining suitable parameters of micro texture on the smooth bearing surface.

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Effect of texture on hydrodynamic journal bearing performance under starvation lubrication

Cited by 2 publications

References 53 publications

Effect of composite textured rough surfaces on the lubrication performance of cylindrical roller bearings

Effect of composite textured rough surfaces on the lubrication performance of cylindrical roller bearings

Effect of cylindrical micro-pit texture on the performance of misaligned radial journal bearing

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