风机故障识别的确定性退化建模——模态曲率法

IF 3 Q2 ENGINEERING, CIVIL
Yung-Chiang Lin, C. Chiang, Chih-Peng Yu, K. Hsu
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引用次数: 2

摘要

摘要自从风力涡轮机开始安装在海上为世界大部分地区供电以来,已建成的风力资源量大幅增加。与风力涡轮机相关的主题鼓励研究人员更加努力地开发建模方法、分析理论和评估技术。通过建立某些模型和新发现,可以提出关于结构健康监测和无损评估的潜在想法,值得探索。基于考虑土壤-结构相互作用的Timoshenko构件的谱公式,本工作对风力涡轮机的模拟模型进行了研究,以量化缺陷和基础刚度对塔架动力响应的各种影响。本文利用第一振型的模态曲率数据对塔架结构进行了分析。初步结果表明,所提出的方法中定义的曲率指数不仅能够指示塔架的损坏区域,而且能够指示基础系统可能遇到的刚度软化程度。所提出的方法证明了作为一种可行的分析方法应用于风力涡轮机塔架基于振动的评估方案的潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Deterministic deterioration modeling of wind turbines toward the failure identification – a modal curvature approach
ABSTRACT The amount of built wind resource has greatly increased since wind turbines have started to get installed offshore in order to power much of the world. Topics relating to wind turbine have encouraged researchers to put in greater efforts towards developing modeling methodologies, analytical theories, assessment techniques. Through the establishment of certain models and new findings, potential ideas regarding structural health monitoring and non-destructive evaluations may be proposed and worthy of exploration. Based on the spectral formulation of a Timoshenko member with the consideration of soil–structure interaction, the simulated model of a wind turbine was investigated in this work in order to quantify the various effects due to defects as well as foundation stiffness on the dynamic responses of the tower. This paper focuses on the analysis of the tower structure using the modal curvature data of the first vibration mode. Preliminary results show that the curvature index defined in the proposed method is capable of indicating not only the damaged region of the tower, but also the degree of stiffness softening that the foundation system may have encountered. The presented methodology demonstrates potential as a feasible analysis method to be applied in a vibration-based assessment scheme for the wind turbine tower.
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来源期刊
CiteScore
3.90
自引率
9.50%
发文量
24
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