Improving the load capacity of journal bearings with chevron textures on the shaft surface

Anjos, Luis Fernando dos; Jaramillo, Alfredo; Buscaglia, Gustavo C.; Nicoletti, Rodrigo

doi:10.1016/j.triboint.2023.108561

Cited by 9 publications

(2 citation statements)

References 25 publications

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“…Figures 5(a) and (b) display the effect of the texture angle on the load-carrying g effect caused by the V-shaped texture on the lubricant flow. Specifically, the flow is pumped to the center of the bearing due to the journal rotational motion, increasing the amount of fluid in the bearing centerline and, thereby increasing the load carrying capacity and reducing the leakage [35][36][37][38]. (Although a double row V-pattern is involved in the present study, the fluid will not only reach the centerline, it will be concentrated in the trailing edge area of each V [37]).…”

Section: Effect Of Texture Parameters On Load-carrying Capacity Frict...mentioning

confidence: 99%

Co-optimization for hydrodynamic lubrication and leakage of V-shape textured bearings via linear weighting summation

Guo,

Ding,

Wang

et al. 2023

Phys. Scr.

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In this study, the linear weighting summation method is adopted for the co-optimization of V-shape textured bearings to maximize the load-carrying capacity and minimize the leakage and friction. Optimal parameters including texture angle and depth and ratio of the texture width are identified based on the established numerical model. Moreover, to improve the comprehensive performance, especially leakage reduction, two profile modifications are introduced: micro-slope and micro-step. The results show that the two proposed modifications are effective for improving the comprehensive performance of V-shape textured journal bearings, and optimal values exist for both the modifications. Furthermore, the overall performance of a bearing with micro-step modification is superior to that of a bearing with micro-slope modification, but the bearing with micro-slope modification is more sensitive to leakage. In summary, this study aims to provide theoretical foundation for the multi-objective optimization design of V-shape textured bearings.

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Section: Effect Of Texture Parameters On Load-carrying Capacity Frict...mentioning

confidence: 99%

Co-optimization for hydrodynamic lubrication and leakage of V-shape textured bearings via linear weighting summation

Guo,

Ding,

Wang

et al. 2023

Phys. Scr.

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“…This texturing technique is widely used in various sliding bearings, as evidenced by numerous publications [4][5][6][7][8][9] and their references. However, there are significantly fewer publications dedicated to shaft texturing [10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Criteria for Evaluating the Tribological Effectiveness of 3D Roughness on Friction Surfaces

Stelmakh,

Fu,

Kolienov

et al. 2024

Lubricants

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A new technique for finishing the surfaces of friction pairs has been proposed, which, in combination with the original test method, has shown a significant influence of the initial roughness configuration (surface texture) on friction and wear. Two types of finishing processing of the shaft friction surfaces were compared, and it was found that the friction and wear coefficients differ by more than 2–5 and 2–4 times, respectively. Based on a new methodology for analyzing standard roughness parameters, the tribological efficiency criteria (in the sense of reducing friction and wear) are proposed for the initial state of the friction surface of a radial plane sliding bearing shaft relative to the friction direction, which is consistent with its frictional characteristics. Comparison of the laboratory test results with the surface tribological efficiency criteria showed that these criteria are very promising for controlling existing technologies and optimizing new technologies for friction surface finishing in various friction systems.

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A second-order in time and space model to solve the coupled Reynolds–Rayleigh–Plesset equations for the dynamics of cavitated hydrodynamic journal bearings

Palavecino,

Cavalieri,

Márquez Damián

2024

Tribology International

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Improving the load capacity of journal bearings with chevron textures on the shaft surface

Cited by 9 publications

References 25 publications

Co-optimization for hydrodynamic lubrication and leakage of V-shape textured bearings via linear weighting summation

Co-optimization for hydrodynamic lubrication and leakage of V-shape textured bearings via linear weighting summation

Criteria for Evaluating the Tribological Effectiveness of 3D Roughness on Friction Surfaces

A second-order in time and space model to solve the coupled Reynolds–Rayleigh–Plesset equations for the dynamics of cavitated hydrodynamic journal bearings

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