Shake Table Testing of a Utility-Scale Wind Turbine

Autor:	Lanhui Guo, Ian Prowell, Chia-Ming Uang, Ahmed Elgamal, J. Enrique Luco
Rok vydání:	2012
Předmět:	Engineering business.industry Rotor (electric) Mechanical Engineering Network for Earthquake Engineering Simulation Stiffness Structural engineering Turbine law.invention Power rating Mechanics of Materials law medicine Earthquake shaking table Torque medicine.symptom business Tower
Zdroj:	Journal of Engineering Mechanics. 138:900-909
ISSN:	1943-7889 0733-9399
DOI:	10.1061/(asce)em.1943-7889.0000391
Popis:	Shake table tests were undertaken on a full-scale wind turbine (65-kW rated power, 22.6-m hub height, and 16-m rotor diameter) using the Network for Earthquake Engineering Simulation Large High Performance Outdoor Shake Table at the University of California, San Diego. Structural response characteristics and modal parameters are presented for base shaking imparted in two configurations, both parallel (configuration 1) and perpendicular (configuration 2) to the axis of rotation of the rotor. Results are summarized for a series of progressively stronger motions imparted in configuration 1, with analysis identifying damage sources leading to an overall loss in stiffness. Two sources of observed softening are identified and quantified: (1) degradation of grout at the tower base, and (2) loss of bolt torque at the connections between tower segments. Results showed that the two configurations had little difference in structural response and demand parameters. For the tested turbine, with appropriate con...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ca3b21c1aa4400e3ff5b8f51ef754def https://doi.org/10.1061/(asce)em.1943-7889.0000391 Zobrazit plný text záznamu