dc.contributor.author Tartibu, LK
dc.contributor.author Kilfoil, M
dc.contributor.author Van Der Merwe, AJ
dc.date.accessioned 2012-11-26T01:54:43Z
dc.date.available 2012-11-26T01:54:43Z
dc.date.copyright 2012-07
dc.date.issued 2012-11-26
dc.identifier.citation International Journal of Advances in Engineering & Technology, vol.4(1), pp.630 - 639 (10)
dc.identifier.uri http://hdl.handle.net/10292/4760
dc.description.abstract In 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.publisher IJAET
dc.relation.uri http://www.archives-ijaet.org/media/62I9-VIBRATION-ANALYSIS.pdf
dc.rights International Journal of Advances in Engineering & Technology - IJAET is an Open Access journal.
dc.subject Variable length blade; Natural frequencies; Vibration; Finite element analysis; Wind turbine
dc.title Vibration analysis of a variable length blade wind turbine
dc.type Journal Article
dc.rights.accessrights OpenAccess
aut.relation.endpage 639
aut.relation.issue 1
aut.relation.pages 10
aut.relation.startpage 630
aut.relation.volume 4
pubs.elements-id 131880

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