Gas foil bearings with radial injection: Multi-domain stability analysis and unbalance response

Osmanski, Sebastian von; Santos, Ilmar

doi:10.1016/j.jsv.2021.116177

Cited by 15 publications

(7 citation statements)

References 59 publications

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“…adjusted the performance of a gas-foil bearing with hydrostatic injections that regulate the attitude angle and eccentricity of the bearing. They experimentally verified that air-injector valves increase the onset speed of instability while suppressing subsynchronous vibrations [113] (figure 20(b)). However, the precise injection amount to the air-injector valves is not easily quantified.…”

Section: Active Strategies For Ensuring Rotordynamic Stabilitymentioning

confidence: 86%

“…Enlarges the system boundary and consumes a large amount of energy Actively breaking the continuity of a gas film Actuated GFB with air-injector valves [113] Injector valves provide a high-pressure gas flow Injection amount difficult to quantify Piezoelectric actuated GFB [114] A high voltage is applied on piezoelectric actuators to generate radial preloads…”

Section: Activementioning

confidence: 99%

Section: Active Strategies For Ensuring Rotordynamic Stabilitymentioning

confidence: 99%

Section: Active Strategies For Ensuring Rotordynamic Stabilitymentioning

confidence: 99%

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Design and optimization of fluid lubricated bearings operated with extreme working performances—a comprehensive review

Zhang,

Huang,

Chen

et al. 2024

Int. J. Extrem. Manuf.

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Fluid lubricated bearings have been widely adopted for supporting components of high-end equipments in the field of metrology, semi-conductor, aviation, strategic defense, ultra-precision manufacturing, medical treatment and power generations. These fields all involve extreme working conditions such as ultra-high moving precision, ultra-high rotation speed, ultra-heavy bearing load, ultra-high environmental temperature, high radiation and high vacuum, which present challenges for the design and optimization of reliable fluid lubricated bearings. Breakthrough of any related bottlenecks will promote the development course of high-end equipments. To further promote the advancement of high-end equipments, this paper reviews the design and optimization of fluid lubricated bearings operated with typical extreme working performances. Targeting on the realization of extreme working perfor mances, the current challenges, the current solutions, the underlying deficiencies and the promising developing directions regarding to the design and optimization of fluid lubricat ed bearings are systematically pointed out. This paper can provide guidance for choosing suitable fluid lubricated bearings and optimizing their structures based on required extremeworking performances.

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Section: Active Strategies For Ensuring Rotordynamic Stabilitymentioning

confidence: 86%

Section: Activementioning

confidence: 99%

Section: Active Strategies For Ensuring Rotordynamic Stabilitymentioning

confidence: 99%

Section: Active Strategies For Ensuring Rotordynamic Stabilitymentioning

confidence: 99%

See 2 more Smart Citations

Design and optimization of fluid lubricated bearings operated with extreme working performances—a comprehensive review

Zhang,

Huang,

Chen

et al. 2024

Int. J. Extrem. Manuf.

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“…According to von Osmanski [4], after defining the circumferential and axial coordinates θ and ∼ z, the isothermal, compressible, and transient modified Reynolds equation (MRE) for an ideal gas can be written as…”

Section: Theory Of Fluid Film Bearingsmentioning

confidence: 99%

Fluid Film Bearings and CFD Modeling: A Review

Pérez-Vigueras,

Colín-Ocampo,

Blanco-Ortega

et al. 2023

Machines

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This paper is a review of the literature about CFD modeling and analysis of journal, thrust, and aerostatic bearings; the advantages and disadvantages of each are specified, and the bearing problems that have been analyzed are discussed to improve their designs and performance. A CFD transient analysis of journal bearings was conducted using the dynamic mesh method together with movement algorithms while keeping a structured mesh of a good quality in the ANSYS Fluent software to determine the equilibrium position of the journal and calculate the dynamic coefficients. Finally, areas of opportunity for analyzing and designing fluid film bearings to improve their performance are proposed.

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A Presentation of Control Theory Applied to the Design of Controllable Segmented Gas Foil Bearings

Jensen

Santos

2023

Lecture Notes in Mechanical Engineering

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Gas foil bearings with radial injection: Multi-domain stability analysis and unbalance response

Cited by 15 publications

References 59 publications

Design and optimization of fluid lubricated bearings operated with extreme working performances—a comprehensive review

Design and optimization of fluid lubricated bearings operated with extreme working performances—a comprehensive review

Fluid Film Bearings and CFD Modeling: A Review

A Presentation of Control Theory Applied to the Design of Controllable Segmented Gas Foil Bearings

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