Staff Members - Benha University
Coupled Vibration Analysis of Composite Wind Turbine Blade
4th International Conference of Engineering Division, National Research Center, Cairo, Egypt • 2018
Publication Information
Authors
Karam Y. Maalawi and Gerges E. Beshay
Keywords
Wind energy, Wind turbine, Composite blade, Natural frequencies, Transfer matrix
Journal
4th International Conference of Engineering Division, National Research Center, Cairo, Egypt
Publisher
National Research Center, Cairo, Egypt
Volume
Not Available
Issue
Not Available
Pages
Not Available
publication.type
Local
Paper Link
Not Available
Supplementary Materials
Not Available
Abstract
An analytical model for the free vibration of non-uniform, anisotropic, thin-walled wind turbine blade is presented. The blade
is constructed from laminated fibrous composite materials with variable thickness and stiffness. The study focuses on the blade
spar that represents the main supporting structure within a wind turbine blade. Two specific lay-up configurations; namely,
Circumferentially Asymmetric Stiffness (CAS) and Circumferentially Uniform Stiffness (CUS) are analyzed. The transfer
matrix method is used to study the vibration behavior of a tapered spar by dividing it into multiple uniform segments, each of
which has different length, cross sectional dimensions and material properties. The influence of coupling on the vibration
modes is identified and the functional behavior of the frequencies with the lamination parameters is thoroughly investigated
and discussed.
is constructed from laminated fibrous composite materials with variable thickness and stiffness. The study focuses on the blade
spar that represents the main supporting structure within a wind turbine blade. Two specific lay-up configurations; namely,
Circumferentially Asymmetric Stiffness (CAS) and Circumferentially Uniform Stiffness (CUS) are analyzed. The transfer
matrix method is used to study the vibration behavior of a tapered spar by dividing it into multiple uniform segments, each of
which has different length, cross sectional dimensions and material properties. The influence of coupling on the vibration
modes is identified and the functional behavior of the frequencies with the lamination parameters is thoroughly investigated
and discussed.