Effect of surface waviness on the static performance of aerostatic journal bearings

Wang, Xinkuan; Xu, Qiao; Wang, Baorui; Zhang, Lianxin; Yang, Huanxing; Peng, Zhike

doi:10.1016/j.triboint.2016.07.026

Cited by 75 publications

(40 citation statements)

References 27 publications

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“…To simplify the model of surface waves, we assume that the form of waves fits the function of sinusoidal; thus, the waviness in circumferential direction can be described as the following form [10,24]:…”

Section: Numerical Solution Of Gas Pressure Distributionmentioning

confidence: 99%

“…And thus, the performance of bearing can be enhanced by the proper selection of the roughness pattern parameter. Wang et al [10] studied the influence of the waves of bearing surface on the static and dynamic performance of the aerostatic journal bearing. e results showed that the wave amplitudes significantly affect the static and dynamic performance of the bearing.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effects of Surface Waviness on the Nonlinear Vibration of Gas Lubricated Bearing‐Rotor System

Sheng

et al. 2018

Shock and Vibration

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This paper presents the effects of the surface waviness on the nonlinear dynamic performance of a gas bearing-rotor system. The coupled vibration with the elastomer is taken into consideration to fit the actual engineering application. The effects of the directions, the amplitudes, and the numbers of waves to the nonlinear dynamic performance are investigated. The results show that the existence of the surface waviness in the circumferential direction can improve the stability of the system obviously. But the surface waviness in the axial direction is damage to the system. The nonlinear dynamic performance of the system is insensitive to the number of surface waviness. The increase of the amplitude of the waviness in circumferential direction can improve the stability of the system.

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Section: Numerical Solution Of Gas Pressure Distributionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of Surface Waviness on the Nonlinear Vibration of Gas Lubricated Bearing‐Rotor System

Sheng

et al. 2018

Shock and Vibration

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show abstract

“…Therefore, it was necessary to investigate the different types of gas systematically. The performance of microbearings gas bearing usually had a smaller and more precise geometric structure and the rotating speed of which (greater than 10 5 rpm in most cases) was usually larger than traditional gas bearing [20]. Therefore, the flow characteristic of traditional gas bearing was simpler than that of microbearings due to its very small Knudsen number.…”

Section: Introductionmentioning

confidence: 99%

Influence of Temperature Effect on the Static and Dynamic Performance of Gas-Lubricated Microbearings

Liu

Wang

et al. 2020

Micromachines

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Gas-lubricated microbearings are widely applied in multiple fields due to their advantages of high-speed, low friction level and other features. The operating environment of microbearings is complex, and the difference of temperature has an important influence on their comprehensive performance. In this investigation, FEM (finite element method) is employed to investigate the static, dynamic and limit characteristics of microbearings lubricated by different kinds of gas at different temperatures. The results show that the rise of temperature leads to the decline of equivalent viscosity of gas, which weakens the load capacity of microbearings, and furthermore, affects the operating stability of microbearings. The dynamic performances of microbearings at different temperatures are very different, and the two dynamic limit characteristics are more sensitive to temperature when it changes.

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“…Sharma SC [18] investigated the impact of misalignment and wear on radial bearings, and the results showed that the orifice compensator bearing was more sensitive to wear depth changes compared to the capillary compensated bearing. Wang X et al [19,20] studied the influence of surface waviness on gas bearing and found that the surface waviness in different directions had different effects on the static and dynamic characteristics of the bearing. Feng K [21] studied the performance of micro spherical spiral groove gas bearings with surface roughness considering temperature effects.…”

Section: Introductionmentioning

confidence: 99%

Probabilistic Sensitivity Analysis of Wear Property for MEMS Gas Bearing

Zhang

Xie

2019

Applied Sciences

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In this study, the sensitivity of MEMS gas bearing’ performance to the wear in different axial and circumferential positions is investigated in detail. Rarefaction effect is introduced into the transient and steady lubrication equation, and then the finite element method (FEM) is employed to solve the equations. The stochastic process is adopted to simulate wear distribution and view of probability is proposed to describe the change laws of the static and dynamic performance of the bearing. Then, the static and dynamic characteristics of the bearing in 50 wear conditions are calculated for each case. Furthermore, the standard deviations and correlation coefficients of the bearing performance sample points are analyzed to demonstrate the influence degree of wear in different positions.

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Effect of surface waviness on the static performance of aerostatic journal bearings

Cited by 75 publications

References 27 publications

Effects of Surface Waviness on the Nonlinear Vibration of Gas Lubricated Bearing‐Rotor System

Effects of Surface Waviness on the Nonlinear Vibration of Gas Lubricated Bearing‐Rotor System

Influence of Temperature Effect on the Static and Dynamic Performance of Gas-Lubricated Microbearings

Probabilistic Sensitivity Analysis of Wear Property for MEMS Gas Bearing

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