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Article

Dynamic Analysis of Composite Wind Turbine Blades as Beams: An Analytical and Numerical Study

1
Department of Mechanical Engineering, Imperial College London, London SW7 2AZ, UK
2
Faculty of Mechanical Engineering, Istanbul Technical University, Istanbul 34437, Turkey
3
Department of Aerospace Engineering, University of Bristol, Bristol BS8 1TR, UK
*
Authors to whom correspondence should be addressed.
Received: 29 October 2020 / Revised: 9 December 2020 / Accepted: 21 December 2020 / Published: 24 December 2020
(This article belongs to the Special Issue Dynamics of Composite Wind Turbine Rotor Blades)
This study focuses on the dynamic modelling and analysis of the wind turbine blades made of multiple layers of fibre reinforced composites and core materials. For this purpose, a novel three-dimensional analytical straight beam model for blades is formulated. This model assumes that the beam is made of functionally graded material (FGM) and has a variable and asymmetrical cross section. In this model, the blades are assumed to be thin, slender and long with a relatively straight axis. They have two main parts, namely the core and the shell. The so-called core consists of a lightweight isotropic foam material, which also adds significant damping to the system. The core material is covered by the shell, which is modelled using homogenous and orthotropic material assumptions as the structure is reinforced with continuous fibres. Therefore, the blades are modelled under a straight beam with varying cross-section assumptions, in which the effective elastic properties are acquired by homogenizing the cross section. The beam formulation for modelling the system is performed both analytically and numerically with the finite element method. The results of both methods are in well agreement. The maximum deviation between the results is found below 4%. View Full-Text
Keywords: wind turbine; composite blades; modal analysis; analytical solution; finite element method wind turbine; composite blades; modal analysis; analytical solution; finite element method
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MDPI and ACS Style

Tüfekci, M.; Genel, Ö.E.; Tatar, A.; Tüfekci, E. Dynamic Analysis of Composite Wind Turbine Blades as Beams: An Analytical and Numerical Study. Vibration 2021, 4, 1-15. https://0-doi-org.brum.beds.ac.uk/10.3390/vibration4010001

AMA Style

Tüfekci M, Genel ÖE, Tatar A, Tüfekci E. Dynamic Analysis of Composite Wind Turbine Blades as Beams: An Analytical and Numerical Study. Vibration. 2021; 4(1):1-15. https://0-doi-org.brum.beds.ac.uk/10.3390/vibration4010001

Chicago/Turabian Style

Tüfekci, Mertol, Ömer E. Genel, Ali Tatar, and Ekrem Tüfekci. 2021. "Dynamic Analysis of Composite Wind Turbine Blades as Beams: An Analytical and Numerical Study" Vibration 4, no. 1: 1-15. https://0-doi-org.brum.beds.ac.uk/10.3390/vibration4010001

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