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dc.contributor.authorTartibu, LK
dc.contributor.authorKilfoil, M
dc.contributor.authorVan Der Merwe, AJ
dc.date.accessioned2012-11-26T01:54:43Z
dc.date.available2012-11-26T01:54:43Z
dc.date.copyright2012-07
dc.date.issued2012-11-26
dc.identifier.citationInternational Journal of Advances in Engineering & Technology, vol.4(1), pp.630 - 639 (10)
dc.identifier.urihttp://hdl.handle.net/10292/4760
dc.description.abstractIn this paper, flap-wise, edge-wise and torsional natural frequencies of a variable length blade have been identified. Therefore designers can ensure that natural frequencies will not be close to the frequency of the main excitation forces in order to avoid resonance. The fixed portion and moveable portion of the variable length blade are approximated respectively by a hollow and a solid beam which can be slid in and out. Ten different configurations of the variable length blade, representing ten different positions of the moveable portion are investigated. A MATLAB program was developed to predict natural frequencies. Similarly three-dimensional models of the variable length blade have been developed in the finite element program Unigraphics NX5. Concurrence between MATLAB and Unigraphics NX5 results has been found for the frequency range of interest. This means that an effective method to compute natural frequencies of a variable length blade was developed.
dc.publisherIJAET
dc.relation.urihttp://www.archives-ijaet.org/media/62I9-VIBRATION-ANALYSIS.pdf
dc.rightsInternational Journal of Advances in Engineering & Technology - IJAET is an Open Access journal.
dc.subjectVariable length blade
dc.subjectNatural frequencies
dc.subjectVibration
dc.subjectFinite element analysis
dc.subjectWind turbine
dc.titleVibration analysis of a variable length blade wind turbine
dc.typeJournal Article
dc.rights.accessrightsOpenAccess
aut.relation.endpage639
aut.relation.issue1
aut.relation.pages10
aut.relation.startpage630
aut.relation.volume4
pubs.elements-id131880


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