Modal testing of a simplified wind turbine blade

Simple item page
aut.relation.endpage660
aut.relation.issue1
aut.relation.pages12
aut.relation.startpage649
aut.relation.volume4
aut.researcherVan Der Merwe, Aletta Johanna
dc.contributor.authorTartibu, LK
dc.contributor.authorKilfoil, M
dc.contributor.authorVan Der Merwe, AJ
dc.date.accessioned2012-11-26T01:59:38Z
dc.date.available2012-11-26T01:59:38Z
dc.date.copyright2012-07
dc.date.issued2012-07
dc.description.abstractThis paper examines the modal analysis techniques applied in experiments using a uniform and a stepped beam. These simplified shapes are representative of the a wind turbine blade. Natural frequencies have been identified, therefore designers can ensure those natural frequencies will not be close to the frequency of the main excitation forces (1P or NbP with Nb being the number of rotor blades) in order to avoid resonance. The turbine blade is approximated by a cantilever, therefore, it is fully constrained where attached to a turbine shaft/hub. Flap-wise, edge-wise and torsional natural frequencies are calculated. The results found have been compared to numerical results and the exact solution of an Euler-Bernoulli beam. Concurrence is found for the frequency range of interest. Although, some discrepancies exist at higher frequencies (above 500 Hz), finite element analysis proves to be reliable for calculating natural frequencies.
dc.identifier.citationInternational Journal of Advances in Engineering & Technology, vol.4(1), pp.649 - 660 (12)
dc.identifier.urihttps://hdl.handle.net/10292/4762
dc.publisherInternational Journal of Advances in Engineering & Technology (IJAET)
dc.relation.urihttp://www.archives-ijaet.org/media/64I9-MODAL-TESTING-OF-A-SIMPLIFIED.pdf
dc.rightsIJAET is an Open Access journal.
dc.rights.accessrightsOpenAccess
dc.subjectModal testing
dc.subjectWind turbine
dc.subjectNatural frequencies
dc.subjectFinite element analysis
dc.subjectEuler Bernoulli beam
dc.titleModal testing of a simplified wind turbine blade
dc.typeJournal Article
pubs.elements-id131882
pubs.organisational-data/AUT
pubs.organisational-data/AUT/Design & Creative Technologies
pubs.organisational-data/AUT/Design & Creative Technologies/School of Computing & Mathematical Science
pubs.organisational-data/AUT/PBRF Researchers
pubs.organisational-data/AUT/PBRF Researchers/Design & Creative Technologies PBRF Researchers
pubs.organisational-data/AUT/PBRF Researchers/Design & Creative Technologies PBRF Researchers/DCT C & M Mathematical Science
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