DESIGN STUDY OF BIONIC INTERNAL RIB STRUCTURE OF IEA 15 MW WIND TURBINE BLADE

Fan Shijie; Shou Haonan; Miao Weipao; Zhu Haibo; Li Chun; Yue Minnan

doi:10.19912/j.0254-0096.tynxb.2024-1311

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Acta Energiae Solaris Sinica ›› 2026, Vol. 47 ›› Issue (2) : 398-407. DOI: 10.19912/j.0254-0096.tynxb.2024-1311

DESIGN STUDY OF BIONIC INTERNAL RIB STRUCTURE OF IEA 15 MW WIND TURBINE BLADE

Fan Shijie¹, Shou Haonan¹, Miao Weipao^1,2, Zhu Haibo¹, Li Chun^1,2, Yue Minnan^1,2

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Abstract

The development of super-large wind turbines will lead to the contradiction between the blade quality and structural performance requirements of blades. Therefore, referring to the leaf vein structure of plant blade, a bionic internal rib configuration for 15 MW wind turbine blade is proposed, and combined with the pavement design to realize the lightweight and structural reinforcement of the blade design. The modal, stiffness, strength and stability of the blade are analyzed by the one-way fluid-solid coupling. The results show that the bionic internal rib configuration can improve the blade flapwise and torsion stiffness, avoiding the collision between the blade and the tower, but the edgewise stiffness is reduced; the surface stress of the bionic blade is improved compared with that of the conventional blade, but they do not reach the limit of the material; the buckling factor of the bionic blade is improved, and the overall buckling of the blade does not occur, so it meets the stability requirements.

Key words

wind turbine blades / lightweight / bionics / composite materials / structural analysis

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Fan Shijie, Shou Haonan, Miao Weipao, Zhu Haibo, Li Chun, Yue Minnan. DESIGN STUDY OF BIONIC INTERNAL RIB STRUCTURE OF IEA 15 MW WIND TURBINE BLADE[J]. Acta Energiae Solaris Sinica. 2026, 47(2): 398-407 https://doi.org/10.19912/j.0254-0096.tynxb.2024-1311

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