Reproduction of seismic responses of wind turbine tower by hybrid tests considering shear and bending coupled boundary control
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Le résumé fourni par la source
The dynamic responses of wind turbine towers subjected to earthquakes and winds are very complex and might cause significant damages. However, the reproduction of the dynamic response in a laboratory is not easy because the specimen shall be scaled very small to meet the space limits of wind tunnels and shaking tables. Real-time hybrid testing (RTHT) is an appealing option to solve this difficulty, which takes part of a structure as the specimen, while treats the rest numerically so that large scale specimen could be used. However, the application of RTHT to a wind turbine tower requires more complex boundary coordination to reproduce the coupled shear and bending behavior. This paper proposes a shaking-table substructure testing framework, where the lower part of the tower is fixed on the shaking table at the bottom and the top of the specimen is simultaneously loaded by a two-degree-of-freedom loading device. The loading facilities communicate in real time with the numerical substructure, and the superstructure including the wind turbine and blades is numerically simulated under the external excitations. Displacements and forces at the boundary are transferred between the numerical and physical substructures to realize boundary compatibility and equilibrium. A novel boundary loading device controls two masses to realize bending and shear equilibrium at the same boundary surface. Enhanced three-variable control is proposed to improve the performance of boundary coordination and the error-response negative feedback compensation method is proposed to reduce error transmission in RTHT, as demonstrated and introduced in a series of simulations and conceptual study.
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Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Reproduction of seismic responses of wind turbine tower by hybrid tests considering shear and bending coupled boundary control
- Date Crossref
- 02/06/2022
- Éditeur
- SAGE Publications
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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Heilongjiang Earthquake Agency pays non établi dans la noticeOrganisme public
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Institute of Engineering Mechanics pays non établi dans la noticeOrganisme public
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Ministry of Emergency Management of the People's Republic of China pays non établi dans la noticeOrganisme public
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China Earthquake Administration pays non établi dans la noticeStructure de recherche
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Guangzhou University Earthquake Engineering Research & Test Center pays non établi dans la noticeUniversité ou école supérieure
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Key Laboratory of Earthquake Disaster Mitigation pays non établi dans la noticeStructure de recherche
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Key Laboratory of Earthquake Engineering and Engineering Vibration pays non établi dans la noticeStructure de recherche
Heilongjiang Earthquake Agency, Institute of Engineering Mechanics et Ministry of Emergency Management of the People's Republic of China, avec 4 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.