Abstract:Wind turbines are dynamically complex structures. They entail slender towers, flexible foundations, and heavy rotor-nacelle-assembly (RNA). In the context of earthquake analysis, the RNA is often simplified as a rigid point mass which can suppress the modal contribution of blades from the global system dynamics and may further affect the reliability of seismic response of wind turbines. Other high-fidelity finite element (FE) blade models are difficult to implement due to the complex layup of composite materia… Show more
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