Open AccessPrestressed Modal Analysis of Wind Turbine Blade Considering Fluid-solid Coupling
Author(s) -
Shanyao Li,
Yingbo Wang,
Haixiang Sun,
Changle Sun,
Xiaolin Zhang,
Tingrui Liu
Publication year - 2022
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2173/1/012031
Subject(s) - flapping , turbine blade , structural engineering , vibration , blade (archaeology) , turbine , stress (linguistics) , wake , modal analysis , rotor (electric) , stress field , modal , engineering , coupling (piping) , blade pitch , chimney (locomotive) , aerodynamics , materials science , mechanical engineering , acoustics , finite element method , physics , aerospace engineering , composite material , linguistics , philosophy , wing , inlet
Wind turbine blade is a kind of slender elastic body structure, which is prone to vibration and deformation during operation, seriously affecting the smooth operation of wind turbine. Taking the 1.5MW wind turbine blade as the research object, the three-dimensional shell model of the blade is established based on Solidworks, and the composite material layer design of the blade is carried out in ANSYS ACP. The stress and deformation of the blade in the flow field are studied based on the fluid structure coupling method. The first six natural frequencies and modes of the blade are obtained by taking the stress of the structural field as the prestress of the modal analysis. The results show that flapping and shimmy are the main vibration forms of the blade. When resonance occurs, the fluctuation of the blade in the flapping direction is the largest, and the maximum stress appears near the blade root.