Mixed-lubrication analysis of misaligned bearing considering turbulence

Lv, Fangrui; Jiao, Chunxiao; Ta, Na; Rao, Zhushi

doi:10.1016/j.triboint.2017.10.030

Cited by 70 publications

(36 citation statements)

References 18 publications

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“…Lubrication is required for all bearings during the operation, and it can reduce friction between bearing components [26,27]. Moreover, the lubrication condition is vital during bearing operation.…”

Section: E Ect Of Oil Supply On the Radiation Noisementioning

confidence: 99%

The Effect of Factors on the Radiation Noise of High‐Speed Full Ceramic Angular Contact Ball Bearings

Yan

et al. 2018

Shock and Vibration

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Ceramic angular contact ball bearing is widely used in a high-speed motorised spindle because of their excellent properties such as wear resistance, high temperature resistance, and corrosion resistance. In this study, the characteristics and influencing factors of the radiation noise for a full ceramic angular contact ball bearing applied in the motorised spindle are investigated. Based on a single factor test method, the variations of bearing noise with preload, oil supply, and rotation speed were investigated, and then, the optimal preload and oil supply under the specific speed were obtained. The sound field directivity in the circumferential distribution of the bearing noise was discussed, and the reasons for the uneven distribution of the sound field were elucidated. According to the experimental results, a prediction model on the radiation noise of a full ceramic angular contact ball bearing under certain conditions was proposed. The conclusions will provide a reference for reducing the radiation noise of full ceramic angular contact ball bearings in high-speed operation and improving the bearing performance.

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Section: E Ect Of Oil Supply On the Radiation Noisementioning

confidence: 99%

The Effect of Factors on the Radiation Noise of High‐Speed Full Ceramic Angular Contact Ball Bearings

Yan

et al. 2018

Shock and Vibration

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“…Lv et al. 12 combined the Patir–Cheng model with the Ng–Pan turbulence model to investigate the steady lubrication characteristics with turbulence and roughness effects.…”

Section: Introductionmentioning

confidence: 99%

“…Kim et al 11 evaluated the effect of the surface roughness on the steady properties of the journal bearing based on Patir-Cheng model and asperities contact model. Lv et al 12 combined the Patir-Cheng model with the Ng-Pan turbulence model to investigate the steady lubrication characteristics with turbulence and roughness effects.…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis on the start behavior of rough journal bearings during the gear pump meshing cycle

Zhu

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part J:

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In this paper, the transient lubrication characteristics of hydrodynamic journal bearings during the external gear pump meshing cycle are studied. In the bearings lubrication calculation part, a numerical model is developed to assess the transient lubrication during the initial start-up of an aero gear pump. The model takes into account the effects of surface topography, asperities contact, and pump start-up speed. In the pump simulation part, the flow inside pump and bearing load environment are analyzed by a computational fluid dynamics model. Then a simulation method is presented to solve the problem of pump-bearings system, considering the pump’s influence during bearings lubrication calculation. To gain insight, results of a series of simulations with illustrative examples are presented. The variation of the startup lubrication performance under load conditions corresponding to the pump internal flow field is acquired. The results show that bearings operate from mixed-lubrication to hydrodynamic-lubrication state with changed load-supporting effects during the startup. The load-supporting effects and film rupture boundary are directly related to the pump load fluctuation, but the center trace is slightly influenced except on the hydrodynamic-lubrication state.

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“…26 obtained the fitting equation about the equivalent supporting point location by large number of numerical simulations. Then, mixed-lubrication analysis of misaligned bearing was presented by considering turbulence 27 and wall slip. 28 Zhang et al.…”

Section: Introductionmentioning

confidence: 99%

Comparison of the characteristics of aerostatic journal bearings considering misalignment under pure-static and hybrid condition

Zhang

Zou

2018

Proceedings of the Institution of Mechanical Engineers, Part J:

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In this paper, the steady-state characteristics, including film pressure, load capacity, stiffness, misalignment moment of aerostatic bearings considering two types of misalignment (along vertical direction [Formula: see text] and along horizontal direction [Formula: see text]) are studied under pure-static and hybrid condition. The journal misalignment effects on the steady-state characteristics under pure-static condition and hybrid condition are studied comparatively. The results show that the load capacity and stiffness increase with the increase in the degree of journal misalignment under hybrid condition, while they decrease with the increase in the degree of journal misalignment under pure-static condition. Moreover, the journal misalignment along two perpendicular direction effects on the performances of aerostatic bearings are also investigated comparatively and the performances of bearing are found to be more sensitive to the misalignment along horizontal direction.

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Mixed-lubrication analysis of misaligned bearing considering turbulence

Cited by 70 publications

References 18 publications

The Effect of Factors on the Radiation Noise of High‐Speed Full Ceramic Angular Contact Ball Bearings

The Effect of Factors on the Radiation Noise of High‐Speed Full Ceramic Angular Contact Ball Bearings

Numerical analysis on the start behavior of rough journal bearings during the gear pump meshing cycle

Comparison of the characteristics of aerostatic journal bearings considering misalignment under pure-static and hybrid condition

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