The Stability of Spiral-Grooved Air Journal Bearings in Ultrahigh Speeds

The spiral-grooved structure has been proposed for promoting the load capacity and stiffness of hybrid air journal bearings. In this paper, the dynamic characteristics of spiral-grooved hybrid bearings are first calculated. The stability criteria of the bearings are proposed and analyzed with differ...

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Detalles Bibliográficos
Autores principales: Song, Laiyun, Yuan, Guoqin, Zhang, Hongwen, Ding, Yalin, Cheng, Kai
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8911854/
https://www.ncbi.nlm.nih.gov/pubmed/35268991
http://dx.doi.org/10.3390/ma15051759
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author Song, Laiyun
Yuan, Guoqin
Zhang, Hongwen
Ding, Yalin
Cheng, Kai
author_facet Song, Laiyun
Yuan, Guoqin
Zhang, Hongwen
Ding, Yalin
Cheng, Kai
author_sort Song, Laiyun
collection PubMed
description The spiral-grooved structure has been proposed for promoting the load capacity and stiffness of hybrid air journal bearings. In this paper, the dynamic characteristics of spiral-grooved hybrid bearings are first calculated. The stability criteria of the bearings are proposed and analyzed with different groove structure parameters using frequency domain analysis. It is found that the length of the spiral-groove has significant influence on the stability of the spindle system. Finally, the critical speed of the spiral-grooved hybrid bearing and rotor system is analyzed, and an experiment is carried out to validate the proposed model, finding that groove structure can promote the stability of the air bearing systems.
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spelling pubmed-89118542022-03-11 The Stability of Spiral-Grooved Air Journal Bearings in Ultrahigh Speeds Song, Laiyun Yuan, Guoqin Zhang, Hongwen Ding, Yalin Cheng, Kai Materials (Basel) Article The spiral-grooved structure has been proposed for promoting the load capacity and stiffness of hybrid air journal bearings. In this paper, the dynamic characteristics of spiral-grooved hybrid bearings are first calculated. The stability criteria of the bearings are proposed and analyzed with different groove structure parameters using frequency domain analysis. It is found that the length of the spiral-groove has significant influence on the stability of the spindle system. Finally, the critical speed of the spiral-grooved hybrid bearing and rotor system is analyzed, and an experiment is carried out to validate the proposed model, finding that groove structure can promote the stability of the air bearing systems. MDPI 2022-02-25 /pmc/articles/PMC8911854/ /pubmed/35268991 http://dx.doi.org/10.3390/ma15051759 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Song, Laiyun
Yuan, Guoqin
Zhang, Hongwen
Ding, Yalin
Cheng, Kai
The Stability of Spiral-Grooved Air Journal Bearings in Ultrahigh Speeds
title The Stability of Spiral-Grooved Air Journal Bearings in Ultrahigh Speeds
title_full The Stability of Spiral-Grooved Air Journal Bearings in Ultrahigh Speeds
title_fullStr The Stability of Spiral-Grooved Air Journal Bearings in Ultrahigh Speeds
title_full_unstemmed The Stability of Spiral-Grooved Air Journal Bearings in Ultrahigh Speeds
title_short The Stability of Spiral-Grooved Air Journal Bearings in Ultrahigh Speeds
title_sort stability of spiral-grooved air journal bearings in ultrahigh speeds
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8911854/
https://www.ncbi.nlm.nih.gov/pubmed/35268991
http://dx.doi.org/10.3390/ma15051759
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