In this work the derivation of a vibration model for an H-rotor/Giromill blade is investigated. The blade is treated as a uniform straight elastic Euler-Bernoulli beam under transverse bending and twisting deformation. The derivation of the energy equations for the bending and twisting blade and a simplified aerodynamic model is issued. Lagrange’s equations are applied to assumed modal coordinates to obtain nonlinear equations of motion for bend and twist. A single quasi-steady airfoil theory is applied to obtain the aeroelastic loads. The behavior of the linearized equation for bend only is examined.
Volume Subject Area:
28th Conference on Mechanical Vibration and Noise
Topics:
Blades,
Vibration analysis,
Wind turbines,
Airfoils,
Deformation,
Nonlinear equations,
Rotors,
Stress,
Vibration
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