Abstract
This paper presents a dynamic response analysis of the blade of horizontal axis wind turbines using finite element method. The blade is treated as a thin-walled beam based on the classical lamination theory, and accounts for arbitrary material layup and non-linear anisotropic fibre-reinforced composites. Applying the proposed method,A 29 m rotor blade, previously reported in specialized literature, was chosen as a case study the dynamic behaviour built in a FEM software tool. It is developed to predict natural frequencies and corresponding vibration modes in rotating blade in-plane and out-of-plane. Numerical results are serve as a design tool for the large composite wind turbine blade structure required during design and optimization.
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