STUDY ON FAILURE MECHANISM OF BOLTED CONNECTION CONFIGURATION OF WIND TURBINE SEGMENTED BLADES

Xiang Jiahao; Shi Kezhong; Wu Honghui; Song Juanjuan; Li Qing'an; Zhong Xiaohui

doi:10.19912/j.0254-0096.tynxb.2024-0865

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (9) : 152-161. DOI: 10.19912/j.0254-0096.tynxb.2024-0865

STUDY ON FAILURE MECHANISM OF BOLTED CONNECTION CONFIGURATION OF WIND TURBINE SEGMENTED BLADES

Xiang Jiahao^1~4, Shi Kezhong^1~4, Wu Honghui^1~4, Song Juanjuan^1~4, Li Qing'an^1~4, Zhong Xiaohui^1~4

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Abstract

To obtain the failure mechanism of the segmented blade bolt connection, failure models of various composite materials are first established and compared through experiments and simulations to obtain the most suitable failure theory. Then, on this basis, the bolt connection structure model is established and numerical simulation is carried out. The results show that： Compared with the Hashin and Tsai-Wu failure criteria, the LaRC failure criterion is more applicable to characterizing composite materials failure in bolt connections of segmented blade bolt connections; During the process of bolt loading, the composite material is more prone to failure, but it does not lead to the failure of the overall structure. The bolt failure that occurs in the subsequent process is the main cause of the failure of the connection structure.

Key words

wind turbine / segmented blades / composite material / bolt connection / failure mechanism / finite element simulation

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Xiang Jiahao, Shi Kezhong, Wu Honghui, Song Juanjuan, Li Qing'an, Zhong Xiaohui. STUDY ON FAILURE MECHANISM OF BOLTED CONNECTION CONFIGURATION OF WIND TURBINE SEGMENTED BLADES[J]. Acta Energiae Solaris Sinica. 2025, 46(9): 152-161 https://doi.org/10.19912/j.0254-0096.tynxb.2024-0865

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