Dynamic Instability of a Wind Turbine Blade Due to Large Deflections: An Experimental Validation

Andrés T. López-López, J. Robles-Ocampo, P. Sevilla-Camacho, Orlando Lastres-Danguillecourt, Jesús Muñiz, B. Pérez-Sariñana, Sergio de la Cruz
{"title":"Dynamic Instability of a Wind Turbine Blade Due to Large Deflections: An Experimental Validation","authors":"Andrés T. López-López, J. Robles-Ocampo, P. Sevilla-Camacho, Orlando Lastres-Danguillecourt, Jesús Muñiz, B. Pérez-Sariñana, Sergio de la Cruz","doi":"10.5545/sv-jme.2020.6678","DOIUrl":null,"url":null,"abstract":"Wind turbine blades are designed to be thin and flexible elements. Because unstable dynamic behaviour can affect the life of the rotor, it is crucial to understand the instability of non-linear behaviour caused by large deflections. The present study undertakes both a stability analysis of the non-linear response and an experimental validation of a simplified model for a wind turbine blade based on a cantilever beam. The model is formulated taking into account large geometric deflections and assuming a Galerkin approach. The model is validated experimentally in a wind tunnel with aluminium beams of differing geometry. Analysis of the dynamic response using phase planes reveals that the degree of instability is related to the amplitude of the excitation and the stiffness characteristics.","PeriodicalId":135907,"journal":{"name":"Strojniški vestnik – Journal of Mechanical Engineering","volume":"7 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2020-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Strojniški vestnik – Journal of Mechanical Engineering","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.5545/sv-jme.2020.6678","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 3

Abstract

Wind turbine blades are designed to be thin and flexible elements. Because unstable dynamic behaviour can affect the life of the rotor, it is crucial to understand the instability of non-linear behaviour caused by large deflections. The present study undertakes both a stability analysis of the non-linear response and an experimental validation of a simplified model for a wind turbine blade based on a cantilever beam. The model is formulated taking into account large geometric deflections and assuming a Galerkin approach. The model is validated experimentally in a wind tunnel with aluminium beams of differing geometry. Analysis of the dynamic response using phase planes reveals that the degree of instability is related to the amplitude of the excitation and the stiffness characteristics.
风力机叶片大挠度动态不稳定性的实验验证
风力涡轮机的叶片被设计成薄而灵活的元件。由于不稳定的动力特性会影响转子的寿命,因此了解大挠度引起的非线性特性的不稳定性是至关重要的。本研究对基于悬臂梁的风力发电机叶片进行了非线性响应稳定性分析和简化模型的实验验证。该模型的制定考虑了大的几何偏转,并假设了伽辽金方法。该模型在不同几何形状的铝梁风洞中进行了实验验证。采用相平面法对系统的动态响应进行分析,发现系统的失稳程度与激励幅值和刚度特性有关。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
自引率
0.00%
发文量
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信