Inclination angle effect of tribological performance for hydrostatic bearing having tilting oil pad under variable viscosity conditions

Yu, Xinquan; Wu, Guang‐Peng; Wenkai, Zhou; Hongwei, Bi; Wang, Yu; Gao, Weicheng; Wang, Junfeng; Jiao, Jianhua; Jiang, Hui

doi:10.1007/s40430-021-02946-1

Cited by 13 publications

(7 citation statements)

References 7 publications

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“…Additionally, the temperature of the lubricant rises due to the frictional heat generated during the operation of wind turbine bearings. This rise in temperature can further impact the stability of the lubricant film and pressure distribution [157].…”

Section: Analysis Of Bearing Lubrication Statusmentioning

confidence: 99%

Review of Wind Power Bearing Wear Analysis and Intelligent Lubrication Method Research

Peng,

Zhao,

Shangguan

et al. 2023

Coatings

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With the significant penetration of wind generation, wind turbines require higher and higher lubrication performance for bearings. To improve the lubrication performance of wind power bearings, this study takes wind power bearings as the research object and comprehensively analyzes the wear forms of wind power bearings as well as intelligent lubrication methods. Firstly, the main roles and wear forms of wind turbine bearings are sorted out and analyzed. Secondly, the common lubrication problems of wind power bearings are analyzed from the bearing grease selection, lubrication mode, and lubrication status, highlighting the important influence of lubrication on bearings. Thirdly, the wind turbine bearing wisdom lubrication method research and organization, mainly including the wind power generation bearing lubrication materials, lubrication devices and monitoring methods, and other issues of research and analysis. Finally, current challenges and future development directions are summarized, which are designed to provide theoretical reference and technical support for the related research and engineering practice in the field of wind power engineering.

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Section: Analysis Of Bearing Lubrication Statusmentioning

confidence: 99%

Review of Wind Power Bearing Wear Analysis and Intelligent Lubrication Method Research

Peng,

Zhao,

Shangguan

et al. 2023

Coatings

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“…Nevertheless, when the thrust bearing operates under high-speed and heavy-load conditions, the strong shearing and squeezing forces from the workbench will affect the flow state of lubricating oil. This will not only cause the temperature of the oil film to increase and the load capacity to decrease but may even cause dry friction problems in extreme cases (Shi et al, 2023;Yu et al, 2021). Therefore, enhancing the load capacity and lowering the temperature rise has always been the main focus of thrust bearing research.…”

Section: Introductionmentioning

confidence: 99%

“…This will not only cause the temperature of the oil film to increase and the load capacity to decrease but may even cause dry friction problems in extreme cases (Shi et al. , 2023; Yu et al. , 2021).…”

Section: Introductionmentioning

confidence: 99%

Effect of texture parameters on the lubrication performance of static and dynamic pressure thrust bearings and multi-objective optimization

Yu,

Shi,

Jiang

et al. 2024

ILT

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Purpose This paper aims to study the influence of cylindrical texture parameters on the lubrication performance of static and dynamic pressure thrust bearings (hereinafter referred to as thrust bearings) and to optimize their lubrication performance using multiobjective optimization. Design/methodology/approach The influence of texture parameters on the lubrication performance of thrust bearings was studied based on the modified Reynolds equation. The objective functions are predicted through the BP neural network, and the texture parameters were optimized using the improved multiobjective ant lion algorithm (MOALA). Findings Compared with smooth surface, the introduction of texture can improve the lubrication properties. Under the optimization of the improved algorithm, when the texture diameter, depth, spacing and number are approximately 0.2 mm, 0.5 mm, 5 mm and 34, respectively, the loading capacity is increased by around 27.7% and the temperature is reduced by around 1.55°C. Originality/value This paper studies the effect of texture parameters on the lubrication properties of thrust bearings based on the modified Reynolds equation and performs multiobjective optimization through an improved MOALA.

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“…Their results depicted that the viscous temperature effects would reduce the annular shaft speed ratio and stability of the rotor. Yu et al 30 derived the load carrying capacity, flow rate, oil film thickness and stiffness equations of hydrostatic hybrid bearings under variable viscosity conditions based on tribological principles and lubrication theory. The distribution of oil film temperature and pressure fields were also analyzed.…”

Section: Introductionmentioning

confidence: 99%

Analysis of lubrication performance and flow field for lead-bismuth bearings considering the temperature-viscosity effect

Yun,

Zhao,

Sun

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part J:

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Lead-bismuth bearing performance and dynamic properties are crucial for ensuring the steady operation of lead-bismuth liquid metal pumps since they are one of the primary supporting elements in the lead-bismuth cold fast reactor system. To study and analyze the lubrication performance of lead-bismuth bearings as well as the influence of the viscous-temperature property of lead-bismuth medium on the bearing load performance, a hydrodynamic model based on CFD (Computational Fluid Dynamics) is established. The performance of lubrication comprises addressing the static and dynamic properties of lead-bismuth bearings. The pressure and temperature flow fields of the Lead-bismuth bearing under various working conditions were determined by solving the N-S equation and energy equation. The numerical findings demonstrate a clear strip-like distribution in the temperature and pressure flow fields of the lead-bismuth bearing. The pressure flow distribution in the working and feedback grooves is symmetrical, the temperature flow distribution is isotropic, and the temperature increase is mostly proportional to the rotation speed. As the rotation speed becomes larger, the force in the y-direction, power loss, and leakage flow rate all increase. Bearings with small radius clearance and greater rotation speeds have superior stability than those with big radius clearance and lower speeds. The findings of this paper serve as a point of reference for the study of the viscosity-temperature effect and lubrication theory of lead-bismuth bearings and supply the foundation for subsequent rotor dynamics calculations.

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Inclination angle effect of tribological performance for hydrostatic bearing having tilting oil pad under variable viscosity conditions

Cited by 13 publications

References 7 publications

Review of Wind Power Bearing Wear Analysis and Intelligent Lubrication Method Research

Review of Wind Power Bearing Wear Analysis and Intelligent Lubrication Method Research

Effect of texture parameters on the lubrication performance of static and dynamic pressure thrust bearings and multi-objective optimization

Analysis of lubrication performance and flow field for lead-bismuth bearings considering the temperature-viscosity effect

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