Vibration of Wind Turbine Blade Modeled as Composite Thin-Walled Closed-Section Structure

Ting Rui Liu; Yong Sheng Ren

doi:10.4028/www.scientific.net/AMR.129-131.23

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 129-131Vibration of Wind Turbine Blade Modeled as...

Vibration of Wind Turbine Blade Modeled as Composite Thin-Walled Closed-Section Structure

Abstract:

Based on a laminated composite structure, vibration and nonlinear stall aeroelastic stability of rotor blades modeled as anisotropic thin-walled closed-section beams are systematically addressed. The analysis is applied to a laminated construction of the circumferentially asymmetric stiffness (CAS) that produces bending-bending-twist coupling. The vibration characteristics of composite beam are determined by the Galerkin Method. The unsteady aerodynamic loads and centrifugal force are integrated with the nolinear aerodynamic model to deal with aeroelastic stability analysis. The influence of some related factors, pretwisted angle, ply-angle rotational speed, and wind speed, is investigated. The paper gives methods of eigenvalue analysis and aeroelastic response, which can determine the stability of the blade forced by the nolinear aerodynamics.

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Periodical:

Advanced Materials Research (Volumes 129-131)

Pages:

23-27

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.129-131.23

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Cite this paper

Online since:

August 2010

Authors:

Ting Rui Liu, Yong Sheng Ren

Keywords:

Bending-Bending-Twist Coupling, Circumferentially Asymmetric Stiffness, Galerkin's Method, Nolinear Aerodynamics, ONERA Model, Strip Theory, Thin-Walled Closed-Section Beam

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