Experimental Investigations into CLCD with Identification of Tuning and Damping Effects
Publication: Journal of Structural Engineering
Volume 143, Issue 9
Abstract
In this paper, the results of an experimental investigation on the characterization of a compliant liquid column damper (CLCD) are presented to validate its tuning criterion and to establish the damping mechanism of the system. The experimentally obtained frequencies are found to be very close to those obtained from a coupled eigenvalue analysis of the CLCD model. The orifice head-loss coefficient is evaluated and thereby the CLCD damping is estimated. It is established that effective damping is provided by the oscillating liquid column through the orifice(s) even at the nonresonant liquid frequency. A SDOF structure-CLCD system is also excited experimentally. The experimentally evaluated structural response mitigation achieved by the CLCD is satisfactory and quite close to the results obtained by a simulation study.
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Acknowledgments
This study was supported by Science Foundation Ireland (SFI) under the International Strategic Cooperation Award (Grant No. SFI/12/ISCA/2493) and Department of Science and Technology (DST), Government of India (Sanction Order No. SR/S3/MERC-0017/2012). The financial support is greatly appreciated.
References
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Published In
Journal of Structural Engineering
Volume 143 • Issue 9 • September 2017
Copyright
©2017 American Society of Civil Engineers.
History
Received: Nov 24, 2015
Accepted: Dec 21, 2016
Published online: Apr 26, 2017
Published in print: Sep 1, 2017
Discussion open until: Sep 26, 2017
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