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FROM:
Yuqiao Zheng (1), Rongzhen Zhao (2) and Hong Liu (1)
(1) Key Laboratory of Digital Manufacturing Technology and Application, The Ministry of Education, Lanzhou University of Technology, Lanzhou 730050, China
(2) School of Mechanical and Electronical Engineering, Lanzhou University of Technology, Lanzhou 730050, China
“Optimization Method for Girder of Wind Turbine Blade”, Mathematical Problems in Engineering, Volume 2014, Article ID 898736, 5 pages, http://dx.doi.org/10.1155/2014/898736
ABSTRACT: This paper presents a recently developed numerical multidisciplinary optimization method for design of wind turbine blade. The objective was the highest possible blade weight under specified atmospheric conditions, determined by the design giving girder layer and location parameter. Wind turbine blade on box-section beams girder is calculated by ply thickness, main girder and trailing edge. In this study, a realistic 30 m blade from a 1.2 MW wind turbine model of blade girder parameters is established. The optimization evolves a structure which transforms along the length of the blade, changing from a design with spar caps at the maximum thickness and a trailing edge mass to a design with spar caps toward the tip. In addition, the cross-section structural properties and the modal characteristics of a 62 m rotor blade were predicted by the developed beam finite element. In summary, these findings indicate that the conventional structural layout of a wind turbine blade is suboptimal under the static load conditions, suggesting an opportunity to reduce blade weight and cost.
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