Gas Lubricated Bearings

A special issue of Lubricants (ISSN 2075-4442).

Deadline for manuscript submissions: 31 May 2025 | Viewed by 850

Special Issue Editors


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Guest Editor
Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China
Interests: gas lubricated bearings; rotor dynamics; supercritical carbon dioxide lubricated bearings

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Guest Editor
School of Control Science and Engineering, Dalian University of Technology, Dalian 116024, China
Interests: gas foil bearing; magnetic levitation bearing; oil-free turbomachinery; rotor dynamics

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Guest Editor
College of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, China
Interests: non-contact bearings; flow field control; ultra-precision components

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Guest Editor
TaiHang Laboratory, Chengdu 610213, China
Interests: aerostatic bearings; nonlinear dynamics

Special Issue Information

Dear Colleagues,

Gas lubricated bearings use gas to achieve complete non-contact suspension lubrication, offering advantages such as low friction loss, high precision, adaptability to various working environments, and exceptional stability. Gas lubricated bearings meet the demanding requirements of equipment with extreme performance needs, including ultra-high speeds, precise operation, high efficiency, and long lifespan. Gas lubricated bearings hold promising applications in advanced equipment such as high-speed electric spindles, hydrogen fuel cells, micro-gas turbines, and hydrogen expanders. As the application environments for gas lubricated bearings become increasingly complex, there is a growing emphasis on factors like the lubrication medium, bearing capacity, stability, and adaptability. Lubrication technology for gas bearings encompasses various research areas, including lubrication mechanisms, multi-field coupling flows, structural design and optimization, high-performance manufacturing, performance testing, and system integration.

Dr. Dongjiang Han
Dr. Fangcheng Xu
Dr. Wenjun Li
Dr. Jianbo Zhang
Guest Editors

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Keywords

  • gas foil bearing
  • aerostatic bearing
  • squeeze air film bearing
  • hydrostatic porous gas bearings
  • hybrid lubricated bearings
  • bearings lubricated by other gaseous fluids

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Published Papers (1 paper)

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Research

17 pages, 14618 KiB  
Article
Analysis of the Influencing Factors of Aerostatic Bearings on Pneumatic Hammering
by Yifei Li, Weiping Huang and Ran Sang
Lubricants 2024, 12(11), 395; https://doi.org/10.3390/lubricants12110395 - 16 Nov 2024
Viewed by 468
Abstract
In this study, in order to reveal the influence mechanism of bearing parameters on pneumatic hammering, an aerostatic bearing with a multi-orifice-type restrictor is analyzed. Firstly, the flow field is investigated, and the vortex-induced excitation is discussed in both the frequency and time [...] Read more.
In this study, in order to reveal the influence mechanism of bearing parameters on pneumatic hammering, an aerostatic bearing with a multi-orifice-type restrictor is analyzed. Firstly, the flow field is investigated, and the vortex-induced excitation is discussed in both the frequency and time domains. Then, the frequency-related displacement impedance is analyzed, and the effects of vortex-induced excitation on pneumatic hammering are discussed. Experiments are also conducted for verification. Moreover, the influence of damping on pneumatic hammering is identified. The results show that with larger damping, the risk of pneumatic hammering can be reduced. Finally, the impacts of design parameters on the damping are discussed in detail using an approximate model. Design optimization is considered to achieve the maximum damping, i.e., the minimum risk of pneumatic hammering. The results show that both the air supply pressure and the pocket volume should be minimized. The analysis process provides a reference for the design of bearings to reduce pneumatic hammering. Full article
(This article belongs to the Special Issue Gas Lubricated Bearings)
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