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Wind and Structures Volume 18, Number 2, February 2014 , pages 103-116 DOI: https://doi.org/10.12989/was.2014.18.2.103 |
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Numerical and analytical study of aeroelastic characteristics of wind turbine composite blades |
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Ahmad Reza Ghasemi, Arezu Jahanshir and Mohammad Hassan Tarighat
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| Abstract | ||
| Aeroelasticity is the main source of instability in structures which are subjected to aerodynamic forces. One of the major reasons of instability is the coupling of bending and torsional vibration of the flexible bodies, which is known as flutter. The presented investigation aims to study the aeroelastic stability of composite blades of wind turbine. Geometry, layup, and loading of the turbine blades made of laminated composites were calculated and evaluated. To study the flutter phenomenon of the blades, two numerical and analytical methods were selected. The finite element method (FEM), and JAR-23 standard were used to perform the numerical studies. In the analytical method, two degree freedom flutter and Lagrange\'s equations were employed to study the flutter phenomena analytically and estimate the flutter speed. | ||
| Key Words | ||
| aeroelasticity; wind turbine; composite blade; flutter; finite element method | ||
| Address | ||
| Ahmad Reza Ghasemi and Mohammad Hassan Tarighat: Department of Mechanical Engineering, University of Kashan, Kashan, Iran Arezu Jahanshir : Department of Physics, Buein ZahraTechnical University, Ghazvin, Iran | ||