Vibration of Wind Turbine Blade Modeled as Composite Thin-walled Closed-section Structure

摘要：

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.

关键词： Galerkin method bending-bending-twist coupling circumferentially asymmetric stiffness thin-walled closed-section beam nolinear aerodynamics ONERA model strip theory

作者: Tingrui Liu Yongsheng Ren

作者单位: Mechanical & Electronical Institute,Shandong University of Science & Technology Qingdao 266510,China

会议类型: 国际会议

会议名称: 2010 International Conference on Material and Manufacturing Technology(2010材料与制造技术国际会议 ICMMT2010)

会议地点: 重庆

会议语种:英文

页码: 23-27

在线出版日期: 2010-09-17（万方平台首次上网日期，不代表论文的发表时间）