Natural frequency analysis of a spar-type offshore wind turbine tower with end mass components

Ye, K; Ji, J

Natural frequency analysis of a spar-type offshore wind turbine tower with end mass components

Ye, K

Ji, J

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Publication Type:: Journal Article
Citation:: Journal of Offshore Mechanics and Arctic Engineering, 2018, 140 (6)
Issue Date:: 2018-12-01

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	2018-04-19-tower-ASME-review03-Ver-F-10.pdf	Accepted Manuscript Version	668.89 kB	Adobe PDF	View/Open

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Field	Value	Language
dc.contributor.author	Ye, K https://orcid.org/0000-0001-7109-2334	en_US
dc.contributor.author	Ji, J https://orcid.org/0000-0003-3280-5463	en_US
dc.date.issued	2018-12-01	en_US
dc.identifier.citation	Journal of Offshore Mechanics and Arctic Engineering, 2018, 140 (6)	en_US
dc.identifier.issn	0892-7219	en_US
dc.identifier.uri	http://hdl.handle.net/10453/125926
dc.description.abstract	© 2018 by ASME. Different from the fixed-based wind turbines, the floating type wind turbines are regarded as under a free-free end operating condition. The tower structure of a floating offshore wind turbine is an integrated part connecting the nacelle and support platform. An analytic solution is presented in this technical brief for the free-vibration of the tower structure of a spar-type offshore wind turbine. The tower structure is modeled as a free-free beam based on Euler-Bernoulli beam-column theory. The platform and the nacelle are considered as two large mass components connected by torsion springs at two tower ends with different stiffness. The effects of system parameters on the natural frequencies are investigated under a range of variables, including the tower structure parameters, platform and nacelle parameters, and the connection types. Nonlinear relationships between those variables and the natural frequency of the tower structure are numerically found and some design issues are discussed for the spar-type floating wind turbines.	en_US
dc.relation.ispartof	Journal of Offshore Mechanics and Arctic Engineering	en_US
dc.relation.isbasedon	10.1115/1.4040240	en_US
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject.classification	Civil Engineering	en_US
dc.subject.classification	Energy	en_US
dc.title	Natural frequency analysis of a spar-type offshore wind turbine tower with end mass components	en_US
dc.type	Journal Article
utslib.citation.volume	6	en_US
utslib.citation.volume	140	en_US
utslib.for	0913 Mechanical Engineering	en_US
utslib.for	0905 Civil Engineering	en_US
utslib.for	0911 Maritime Engineering	en_US
utslib.for	0914 Resources Engineering and Extractive Metallurgy	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
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
utslib.copyright.status	closed_access	*
pubs.issue	6	en_US
pubs.publication-status	Published	en_US
pubs.volume	140	en_US

Abstract:

© 2018 by ASME. Different from the fixed-based wind turbines, the floating type wind turbines are regarded as under a free-free end operating condition. The tower structure of a floating offshore wind turbine is an integrated part connecting the nacelle and support platform. An analytic solution is presented in this technical brief for the free-vibration of the tower structure of a spar-type offshore wind turbine. The tower structure is modeled as a free-free beam based on Euler-Bernoulli beam-column theory. The platform and the nacelle are considered as two large mass components connected by torsion springs at two tower ends with different stiffness. The effects of system parameters on the natural frequencies are investigated under a range of variables, including the tower structure parameters, platform and nacelle parameters, and the connection types. Nonlinear relationships between those variables and the natural frequency of the tower structure are numerically found and some design issues are discussed for the spar-type floating wind turbines.

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http://hdl.handle.net/10453/125926