Cargando…
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...
Autores principales: | , |
---|---|
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 |
_version_ | 1784664952867389440 |
---|---|
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. |
format | Online Article Text |
id | pubmed-8904453 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
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 |
work_keys_str_mv | AT bjørkr aconicalpassivemagneticbearingwithconstantstiffness AT bahlcrh aconicalpassivemagneticbearingwithconstantstiffness AT bjørkr conicalpassivemagneticbearingwithconstantstiffness AT bahlcrh conicalpassivemagneticbearingwithconstantstiffness |