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Modeling and analysis of a structure semi‐active tuned liquid damper system
Author(s) -
Soliman I. M.,
Tait M. J.,
El Damatty A. A.
Publication year - 2017
Publication title -
structural control and health monitoring
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.587
H-Index - 62
eISSN - 1545-2263
pISSN - 1545-2255
DOI - 10.1002/stc.1865
Subject(s) - thermoluminescent dosimeter , damper , tuned mass damper , vibration , engineering , damping ratio , control theory (sociology) , natural frequency , structural engineering , acoustics , computer science , physics , control (management) , optics , artificial intelligence , radiation , dosimeter
Summary A tuned liquid damper (TLD), which is similar to a tuned mass damper (TMD), is a type of dynamic vibration absorber (DVA) that can be employed to reduce wind induced resonant vibrations of a structure. Improved TLD performance could be realized by equipping TLDs with variable energy dissipating capabilities such as damping screens, which can be adjusted through a certain mechanism, permitting optimal control performance to be maintained over a wide range of loading conditions in a semi‐active mode of control. In this paper, a control strategy based on a gain scheduling scheme is utilized by controlling the inclination angle of the damping screen(s) and consequently the screen loss coefficient value(s). The gain scheduling control strategy is employed on a simple single‐story structure equipped with a semi‐active TLD (SA‐TLD) in order to maintain the optimal damping value ( ζ TLD − opt ) based on averaged or instantaneous structural response tracking and a prescribed look‐up table. Results are assessed using experimental values from tests conducted on conventional passive TLDs. A performance comparison between a semi‐active TLD control system and a conventional passive TLD control system is carried out. The fluid response amplitude for a SA‐TLD is also investigated and compared to that of a passive TLD. Copyright © 2016 John Wiley & Sons, Ltd.