Performance of Tuned Liquid Dampers
Publication: Journal of Engineering Mechanics
Volume 134, Issue 5
Abstract
This paper investigates the performance of unidirectional and bidirectional tuned liquid dampers (TLDs) under random excitation. The performance of the tuned liquid dampers is measured in terms of efficiency and robustness. A series of experimental tests are conducted on model scale structure-tuned liquid damper systems to evaluate their performance, which is then compared to that of the well known tuned mass damper. The effective damping is calculated for each test conducted and the efficiency and robustness are subsequently examined. The performance of a mistuned TLD is experimentally investigated to highlight the robustness of these passive dynamic vibration absorbers. A nonlinear numerical model is used to conduct an extensive parametric study on the performance of a tuned liquid damper. This study has resulted in the development of performance charts for a tuned liquid damper. These charts allow the efficiency of a tuned liquid damper to be examined for a number of varying parameters, which include the excitation amplitude, water depth, and building frequency. These charts are particularly useful for the initial design of a tuned liquid damper when the precise frequency of the structure is not known.
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Acknowledgments
The writers would like to thank the technical staff at the Boundary Layer Wind Tunnel Laboratory at the University of Western Ontario for their assistance during experimental testing. This study was partially supported by the Natural Sciences and Engineering Council of Canada (NSERC)NRC and McMaster University’s Centre for Effective Design of Structures funded through the Ontario Research and Development Challenge Fund (ORCDF).
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Information & Authors
Information
Published In
Journal of Engineering Mechanics
Volume 134 • Issue 5 • May 2008
Pages: 417 - 427
Copyright
© 2008 ASCE.
History
Received: Dec 28, 2005
Accepted: Sep 10, 2007
Published online: May 1, 2008
Published in print: May 2008
Notes
Note. Associate Editor: Andrew W. Smyth
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