Geometrically nonlinear beam analysis of composite wind turbine blades based on quadrature element method

Zhou, Xiandong1; Huang, Kefu2; Li, Zheng1

2018-09

10.1016/j.ijnonlinmec.2018.05.007

INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS   影响因子和分区

0020-7462

1878-5638

A new nonlinear beam theory is proposed for the analysis of composite wind turbine blades. The beam theory is developed by extending classical Euler-Bernoulli beam theory to a generalized Timoshenko beam. Mechanics-based variables are used to describe finite rotation such that the problems of the sequence dependence or spatially discontinuity of rotational variables can be avoided. Furthermore, nonlinear beam theory is implemented using the weak-form quadrature element method. Numerical examples of both non-rotating and rotating beams are given and the comparison with analytical and finite element results shows high computational accuracy and efficiency of the proposed nonlinear quadrature element. A simple parametric study of a virtual 5-MW wind turbine blade shows that bend-twist coupling due to both material anisotropy and geometrical nonlinearity affects the dynamic performance of the blade significantly.

Nonlinear Composite beam Quadrature element method Wind turbine blade

SCI ; EI

英语

其他

National Natural Science Foundation of China[11521202]

Mechanics

Mechanics

WOS:000437059500009

PERGAMON-ELSEVIER SCIENCE LTD

20182505345799

Computation theory ; Computational efficiency ; Turbomachine blades ; Wind turbines

Wind Power (Before 1993, use code 611 ):615.8 ; Turbines and Steam Turbines:617 ; Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory:721.1

ENGINEERING

Web of Science

1.Peking Univ, Coll Engn, Dept Mech & Engn Sci, Beijing 100871, Peoples R China
2.Southern Univ Sci & Technol, Dept Mech & Aerosp Engn, Shenzhen 518055, Peoples R China

Zhou, Xiandong,Huang, Kefu,Li, Zheng. Geometrically nonlinear beam analysis of composite wind turbine blades based on quadrature element method[J]. INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS,2018,104:87-99.

Zhou, Xiandong,Huang, Kefu,&Li, Zheng.(2018).Geometrically nonlinear beam analysis of composite wind turbine blades based on quadrature element method.INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS,104,87-99.

Zhou, Xiandong,et al."Geometrically nonlinear beam analysis of composite wind turbine blades based on quadrature element method".INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS 104(2018):87-99.