Internal loads and contact pressure distributions on the main shaft bearing in a modern gearless wind turbine

Zheng, J; Ji, J; Yin, S; Tong, VC

Internal loads and contact pressure distributions on the main shaft bearing in a modern gearless wind turbine

Zheng, J Ji, J

Yin, S Tong, VC

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Publisher:: ELSEVIER SCI LTD
Publication Type:: Journal Article
Citation:: Tribology International, 2020, 141
Issue Date:: 2020-01-01

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Field	Value	Language
dc.contributor.author	Zheng, J
dc.contributor.author	Ji, J https://orcid.org/0000-0003-3280-5463
dc.contributor.author	Yin, S
dc.contributor.author	Tong, VC
dc.date.accessioned	2021-02-22T08:12:11Z
dc.date.available	2021-02-22T08:12:11Z
dc.date.issued	2020-01-01
dc.identifier.citation	Tribology International, 2020, 141
dc.identifier.issn	0301-679X
dc.identifier.issn	1879-2464
dc.identifier.uri	http://hdl.handle.net/10453/146284
dc.description.abstract	© 2019 Elsevier Ltd The double-row tapered roller bearing (TRB) widely used to support the main shaft in a modern gearless wind turbine is one of the main components and its faults can lead to the malfunctions and downtime of wind turbines. Over the past decades, some numerical approaches have been proposed for calculating the contact force and pressure distribution of double-row TRBs. Nevertheless, most of the existing studies did not take the angular misalignment between inner and outer rings and the frictional force between the rollers and raceways into account. This paper presents a comprehensive quasi-static model to investigate the internal load and contact pressure distribution in a double-row TRB by considering the angular misalignment, the combined external loads and frictional force. It is found that a small misalignment angle between inner and outer rings can result in a significant change in the magnitude and distribution of the contact force and pressure. The double-row TRB with crowned roller profile exhibits a substantial improvement in contact pressure distribution by eliminating the occurrence of pressure concentration. Moreover, the peak contact pressure can be significantly reduced on the roller with the crowned profile, even if in the case of misaligned bearing. Comparisons of the simulated contact loads and pressure distributions demonstrate the necessity of considering angular misalignment and frictional force in the modelling of large size and heavily loaded double-row TRB.
dc.language	English
dc.publisher	ELSEVIER SCI LTD
dc.relation.ispartof	Tribology International
dc.relation.isbasedon	10.1016/j.triboint.2019.105960
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0910 Manufacturing Engineering, 0913 Mechanical Engineering
dc.subject.classification	Mechanical Engineering & Transports
dc.title	Internal loads and contact pressure distributions on the main shaft bearing in a modern gearless wind turbine
dc.type	Journal Article
utslib.citation.volume	141
utslib.for	0910 Manufacturing Engineering
utslib.for	0913 Mechanical Engineering
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Mechanical and Mechatronic Engineering
pubs.organisational-group	/University of Technology Sydney
utslib.copyright.status	closed_access	*
dc.date.updated	2021-02-22T08:11:49Z
pubs.publication-status	Published
pubs.volume	141

Abstract:

© 2019 Elsevier Ltd The double-row tapered roller bearing (TRB) widely used to support the main shaft in a modern gearless wind turbine is one of the main components and its faults can lead to the malfunctions and downtime of wind turbines. Over the past decades, some numerical approaches have been proposed for calculating the contact force and pressure distribution of double-row TRBs. Nevertheless, most of the existing studies did not take the angular misalignment between inner and outer rings and the frictional force between the rollers and raceways into account. This paper presents a comprehensive quasi-static model to investigate the internal load and contact pressure distribution in a double-row TRB by considering the angular misalignment, the combined external loads and frictional force. It is found that a small misalignment angle between inner and outer rings can result in a significant change in the magnitude and distribution of the contact force and pressure. The double-row TRB with crowned roller profile exhibits a substantial improvement in contact pressure distribution by eliminating the occurrence of pressure concentration. Moreover, the peak contact pressure can be significantly reduced on the roller with the crowned profile, even if in the case of misaligned bearing. Comparisons of the simulated contact loads and pressure distributions demonstrate the necessity of considering angular misalignment and frictional force in the modelling of large size and heavily loaded double-row TRB.

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http://hdl.handle.net/10453/146284