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A conical passive magnetic bearing with constant stiffness

A nested conical passive magnetic bearing is presented. The bearing consists of a nested conical rotor inside a conical stator, i.e. two coaxial tilted rings of permanent magnets, both with a rectangular cross section. Varying the cone or tilt angle of the rotor and stator we determine the rotor rad...

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Detalles Bibliográficos
Autores principales: Bjørk, R., Bahl, C. R. H.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8904453/
https://www.ncbi.nlm.nih.gov/pubmed/35260720
http://dx.doi.org/10.1038/s41598-022-07988-6
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author Bjørk, R.
Bahl, C. R. H.
author_facet Bjørk, R.
Bahl, C. R. H.
author_sort Bjørk, R.
collection PubMed
description A nested conical passive magnetic bearing is presented. The bearing consists of a nested conical rotor inside a conical stator, i.e. two coaxial tilted rings of permanent magnets, both with a rectangular cross section. Varying the cone or tilt angle of the rotor and stator we determine the rotor radius that provides the highest force for three different magnetization cases. For this optimal rotor radius, we show that the bearing with the highest volume normalized force also has the highest stiffness, and furthermore often also the highest varying stiffness with axial displacement. Finally, we show that a conical bearings with a tilt angle of [Formula: see text] has an almost constant stiffness and a linearly varying force with axial displacement, making it ideal as a bearing.
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spelling pubmed-89044532022-03-09 A conical passive magnetic bearing with constant stiffness Bjørk, R. Bahl, C. R. H. Sci Rep Article A nested conical passive magnetic bearing is presented. The bearing consists of a nested conical rotor inside a conical stator, i.e. two coaxial tilted rings of permanent magnets, both with a rectangular cross section. Varying the cone or tilt angle of the rotor and stator we determine the rotor radius that provides the highest force for three different magnetization cases. For this optimal rotor radius, we show that the bearing with the highest volume normalized force also has the highest stiffness, and furthermore often also the highest varying stiffness with axial displacement. Finally, we show that a conical bearings with a tilt angle of [Formula: see text] has an almost constant stiffness and a linearly varying force with axial displacement, making it ideal as a bearing. Nature Publishing Group UK 2022-03-08 /pmc/articles/PMC8904453/ /pubmed/35260720 http://dx.doi.org/10.1038/s41598-022-07988-6 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Bjørk, R.
Bahl, C. R. H.
A conical passive magnetic bearing with constant stiffness
title A conical passive magnetic bearing with constant stiffness
title_full A conical passive magnetic bearing with constant stiffness
title_fullStr A conical passive magnetic bearing with constant stiffness
title_full_unstemmed A conical passive magnetic bearing with constant stiffness
title_short A conical passive magnetic bearing with constant stiffness
title_sort conical passive magnetic bearing with constant stiffness
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8904453/
https://www.ncbi.nlm.nih.gov/pubmed/35260720
http://dx.doi.org/10.1038/s41598-022-07988-6
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