Table of Contents Author Guidelines Submit a Manuscript
Mathematical Problems in Engineering
Volume 2017, Article ID 3412723, 7 pages
https://doi.org/10.1155/2017/3412723
Research Article

Structural Optimization Design of Large Wind Turbine Blade considering Aeroelastic Effect

1Key Laboratory of Digital Manufacturing Technology and Application, The Ministry of Education, Lanzhou University of Technology, Lanzhou 730050, China
2College of Mechano-Electronic Engineering, Lanzhou University of Technology, Lanzhou 730050, China

Correspondence should be addressed to Yuqiao Zheng; moc.361@tuloaiquygnehz

Received 27 July 2017; Revised 2 September 2017; Accepted 6 September 2017; Published 10 October 2017

Academic Editor: Chanho Jung

Copyright © 2017 Yuqiao Zheng et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This paper presents a structural optimization design of the realistic large scale wind turbine blade. The mathematical simulations have been compared with experimental data found in the literature. All complicated loads were applied on the blade when it was working, which impacts directly on mixed vibration of the wind rotor, tower, and other components, and this vibration can dramatically affect the service life and performance of wind turbine. The optimized mathematical model of the blade was established in the interaction between aerodynamic and structural conditions. The modal results show that the first six modes are flapwise dominant. Meanwhile, the mechanism relationship was investigated between the blade tip deformation and the load distribution. Finally, resonance cannot occur in the optimized blade, as compared to the natural frequency of the blade. It verified that the optimized model is more appropriate to describe the structure. Additionally, it provided a reference for the structural design of a large wind turbine blade.