Dynamic and aeroelastic analyses of a wind turbine blade modeled as a thin-walled composite beam

Serhat Yilmaz, Seher Eken, Metin O. Kaya

Araştırma sonucu: ???type-name???Yazıbilirkişi

Özet

In this paper, dynamic and aeroelastic analysis of a wind turbine blade modeled as an anisotropic composite thin-walled box beam is carried out. The analytical formulation of the beam is derived for the flapwise bending, chordwise bending and transverse shear deformations. The derivation of both strain and kinetic energy expressions are made and the equa-tions of motion are obtained by applying the Hamilton's prin-ciple. The equations of motion are solved by applying the ex-tended Galerkin method (EGM) for anti-symmetric lay-up con-figuration that is also referred as Circumferentially Uniform Stiffness (CUS). As a result various coupled vibration modes are exhibited. This type of beam features two sets of independent couplings: i) extension-torsion coupling, ii) flapwise/chordwise bending-flapwise/chorwise transverse shear coupling. For both cases, the natural frequencies are validated by making compar-isons with the results in literature and effects of coupling, trans-verse shear, ply-angle orientation, and rotational speed on the natural frequencies are examined and the mode shapes of the ro-tating thin-walled composite beams are further obtained. Blade element momentum theory (BEMT) is utilized to model the wind turbine blade aerodynamics. After combining the structural and the aerodynamic models, the aeroelastic analysis are performed and flutter boundaries are obtained.

Orijinal dilİngilizce
DOI'lar
Yayın durumuYayınlandı - 2014
EtkinlikASME 2014 International Mechanical Engineering Congress and Exposition, IMECE 2014 - Montreal, Canada
Süre: 14 Kas 201420 Kas 2014

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???event.eventtypes.event.conference???ASME 2014 International Mechanical Engineering Congress and Exposition, IMECE 2014
Ülke/BölgeCanada
ŞehirMontreal
Periyot14/11/1420/11/14

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Publisher Copyright:
Copyright © 2014 by ASME.

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