Vibration and dynamic response of hybrid wind turbine blades
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As the scale of wind turbine blades continue to expand, economical and practical considerations lead us to explore the use of hybrid carbon/glass fiber (CF/GF) reinforced composites. Herein, we investigate the feasibility of introducing modular composite tubulars to replace the traditional shear web construction to tailor specific stiffness and strength. Computational simulations are undertaken to understand the static and dynamic regimes; specifically, displacements, stresses, and vibration modes. Hybrid reinforcement and the dynamic response studies will be extended to address potential damage mechanisms due to impact. Preliminary results indicate insubstantial stiffness-weight ratio. Further tailoring and geometric configuration will be necessary to compensate for local torsional stiffness and high stress concentrations at the tubular joints.