Abstract

Experiments investigating earthquake response of structures traditionally use conventional wired instruments such as strain gauges, displacement transducers, and accelerometers deployed at key areas of interest throughout structure. for wind turbines the rotor is one of these key areas, but due to rotation it is not possible to use wired instruments without a special slip ring. in a recent experiment conducted using the Network for Earthquake Engineering Simulation (NEES) Large High Performance Shake Table (LHPOST) at the University of California, San Diego (UCSD) the global response of a full scale 65-kW turbine (22 m hub height) was monitored using a novel combination of traditional instrumentation in conjunction with point tracking videogrammetry. using this approach, conventional strain, displacement, and acceleration instruments monitored the response of the turbine tower, and the rotor was monitored by observing 16 target points placed on each blade which successfully provided insight not previously available for the global response of a turbine to earthquake shaking while spinning. Excellent correlation was observed between the conventional measurements and results from videogrammetry. This paper presents the methodology used and key response parameters. Such information is extremely valuable for validation of numerical simulation of combined earthquake and wind loads for wind turbines. Copyright © 2011 by Ian Prowell.

Department(s)

Civil, Architectural and Environmental Engineering

Publication Status

Full Access

Comments

National Science Foundation, Grant None

International Standard Book Number (ISBN)

978-160086951-8

International Standard Serial Number (ISSN)

0273-4508

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2024 American Institute of Aeronautics and Astronautics, All rights reserved.

Publication Date

01 Dec 2011

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