Ice-Induced Vibration Analysis of Fixed-Bottom Wind Turbine Towers

被引:1
|
作者
Wang, Bin [1 ,2 ]
Yin, Haoyang [3 ]
Gao, Shan [1 ,2 ]
Qu, Yan [3 ]
Chuang, Zhenju [4 ]
机构
[1] Key Lab Far Shore Wind Power Technol Zhejiang Prov, Hangzhou 311122, Peoples R China
[2] Powerchina Huadong Engn Corp Ltd, Hangzhou 311122, Peoples R China
[3] South China Univ Technol, Sch Marine Sci & Engn, Int Campus, Guangzhou 511442, Peoples R China
[4] Dalian Maritime Univ, Naval Architecture & Ocean Engn Coll, Dalian 116026, Peoples R China
基金
中国国家自然科学基金;
关键词
frequency lock-in; ice-structure interactions; wind turbine in ice regions; continuous brittle crushing; monopile offshore wind turbines; ice-induced vibration; ductile damage-collapse;
D O I
10.3390/jmse12071159
中图分类号
U6 [水路运输]; P75 [海洋工程];
学科分类号
0814 ; 081505 ; 0824 ; 082401 ;
摘要
This research tackles the challenge of ice-induced vibrations in fixed-bottom offshore wind turbines, particularly the risk of frequency lock-in (FLI), a critical loading condition arising from slow ice movement against structures. We introduce an innovative FLI analysis process grounded in the ductile damage-collapse (DDC) mechanism, which offers a more accurate and significantly lower probability of FLI occurrence than conventional methods. Through dynamic evaluations employing a time-domain ice load model and FLI displacement analyses, we demonstrate that FLI can lead to higher structural vibrations than those caused by continuous brittle ice crushing. A case study of a 5 MW monopile wind turbine tower utilising Abaqus confirms the necessity for incorporating FLI considerations into structural design to ensure safety and performance in ice-prone environments. Comparing the DDC mechanism with the ISO method, our study reveals that the DDC approach predicts higher displacement and acceleration values during FLI, nearly an order of magnitude greater than those induced by ice loads with a 50-year return period. The research underscores the importance of robust ice-load integration in design strategies for offshore wind turbines, especially in regions susceptible to ice. It highlights the DDC mechanism as a novel strategy for enhancing structural resilience against ice-induced hazards.
引用
收藏
页数:14
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