海上风电机组三脚架支撑结构疲劳分析方法

陆飞宇; 李成功; 龙凯; DiaeldinYara; 张锦华; 陶涛

doi:10.19912/j.0254-0096.tynxb.2023-0395

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太阳能学报 ›› 2024, Vol. 45 ›› Issue (7) : 699-703. DOI: 10.19912/j.0254-0096.tynxb.2023-0395

海上风电机组三脚架支撑结构疲劳分析方法

陆飞宇¹, 李成功^1,2, 龙凯¹, DiaeldinYara¹, 张锦华³, 陶涛⁴

作者信息 +

FATIGUE ANALYSIS METHOD FOR TRIPOD SUPPORT STRUCUTRE OF OFFSHORE WIND TURBINE

Lu Feiyu¹, Li Chenggong^1,2, Long Kai¹, Diaeldin Yara¹, Zhang Jinhua³, Tao Tao⁴

Author information +

文章历史 +

摘要

为实现海上风电机组支撑结构抗疲劳设计,提出基于整体-局部方式建模的疲劳分析方法。利用该方法对热点局部区域进行详细有限元建模,基于IIW规范采用高精度六面体实体单元离散,其余非重点区域采用梁单元离散,可克服以往运用应力影响矩阵研究中忽略整体结构位移、边界条件不易施加等缺点。基于IEC 61400规范进行整机动力学和载荷计算,对某海上风电机组三脚架支撑结构进行疲劳分析。对比分析不同载荷工况、波高和水深下的累积损伤值,结果验证了所提出的整体-局部建模方法在海上风电机组三脚架支撑结构疲劳分析中的可行性和优越性。

Abstract

To realize the anti-fatigue design of offshore wind turbine support structures, a whole-local modeling-based fatigue analysis method was proposed. A detailed finite element model was established for the local hot spot regions. On the basis of the IIW specification, high-precision hexahedral solid elements were utilized for discretization, whereas beam elements were used to discretize non-critical areas. The proposed method overcomes the deficiencies of previous studies employing stress influence matrix, such as ignoring the displacement of the entire structure and making it difficult to apply the boundary conditions. Using IEC 61400 standards, the dynamic behavior and loads of the entire turbine were calculated and a fatigue analysis of the tripod support structure of an offshore wind turbine was performed. The cumulative damage values caused by various load conditions, wave height and water depth are compared and analyzed. The results demonstrate the viability and superiority of the proposed whole-local modeling method for fatigue analysis of offshore wind turbine tripod support structures.

导出引用

陆飞宇, 李成功, 龙凯, DiaeldinYara, 张锦华, 陶涛. 海上风电机组三脚架支撑结构疲劳分析方法[J]. 太阳能学报. 2024, 45(7): 699-703 https://doi.org/10.19912/j.0254-0096.tynxb.2023-0395

Lu Feiyu, Li Chenggong, Long Kai, Diaeldin Yara, Zhang Jinhua, Tao Tao. FATIGUE ANALYSIS METHOD FOR TRIPOD SUPPORT STRUCUTRE OF OFFSHORE WIND TURBINE[J]. Acta Energiae Solaris Sinica. 2024, 45(7): 699-703 https://doi.org/10.19912/j.0254-0096.tynxb.2023-0395

中图分类号： TH12

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