FATIGUE DAMAGE ASSESSMENT METHOD FOR TOWER BOLTS CONSIDERING WAKE AND YAW

Liu Mingxing; Geng Rongrong; Wang Jiaqing; Long Kai; Lu Feiyu; Tao Tao

doi:10.19912/j.0254-0096.tynxb.2024-0567

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (8) : 65-70. DOI: 10.19912/j.0254-0096.tynxb.2024-0567

FATIGUE DAMAGE ASSESSMENT METHOD FOR TOWER BOLTS CONSIDERING WAKE AND YAW

Liu Mingxing^1,2, Geng Rongrong³, Wang Jiaqing^1,2, Long Kai³, Lu Feiyu³, Tao Tao⁴

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Abstract

To correctly assess the influence of wake and yaw effects on the fatigue characteristics of the turbine, a fatigue evaluation approach using the fatigue damage calculated by time series load is proposed. The wind turbine tower bolts are taken as the research object. By comparing the radar diagrams of equivalent fatigue load and accumulated damage, and the feasibility and reasonableness of the proposed methodology are proved by analyzing the results. The proposed method is also applied to investigate the effects of various yaw angles,wind speeds and turbulence on the fatigue cumulative damage of the tower bolts while the corresponding rule of change is obtained.

Key words

offshore wind turbines / wakes / bolts / fatigue / preload

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Liu Mingxing, Geng Rongrong, Wang Jiaqing, Long Kai, Lu Feiyu, Tao Tao. FATIGUE DAMAGE ASSESSMENT METHOD FOR TOWER BOLTS CONSIDERING WAKE AND YAW[J]. Acta Energiae Solaris Sinica. 2025, 46(8): 65-70 https://doi.org/10.19912/j.0254-0096.tynxb.2024-0567

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