Experimental investigation of utilizing TLD with baffles in a scaled down 5-story benchmark building

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dc.contributor.author Zahrai, SM
dc.contributor.author Abbasi, S
dc.contributor.author Samali, B
dc.contributor.author Vrcelj, Z
dc.date.accessioned 2012-10-12T03:33:55Z
dc.date.issued 2012-01
dc.identifier.citation Journal of Fluids and Structures, 2012, 28 (1), pp. 194 - 210
dc.identifier.issn 0889-9746
dc.identifier.other C1 en_US
dc.identifier.uri http://hdl.handle.net/10453/18333
dc.description.abstract A tuned liquid damper (TLD) is a special type of auxiliary damping device, which relies on the sloshing of a liquid (water) in a container to counteract the forces acting on the structure. Damping in the TLD is introduced as a result of liquid sloshing and wave breaking. A conventional TLD is generally tuned to the main frequency of the building and is less efficient in other frequencies. Because of this limitation, the TLD is usually used to control the structural response of structures, which could be simulated as a SDOF structure, and mostly due to wind forces. In this paper a new kind of tuned liquid damper with some installed rotatable baffles is studied experimentally. The main idea behind installing such baffles is to compensate the effects of probable mistuning of the TLD and also it is an effort toward making the TLD more controllable, i.e. a semi-active damper. Response of a five story benchmark building was utilized to investigate the contributions of these baffles on efficiency of tuned liquid damper under dynamic and earthquake excitations. By observing the performance of TLD with baffles, the study investigates the influence of a number of parameters, include the following: baffles angles, frequency ratio, mass ratio and especially the effects of probable mistuning with changing the depth of water and orientation of baffles. The damping ratios of the building for a range of baffles angles were evaluated using logarithmic decrement technique. The results that are obtained in this paper show that the displacement and acceleration responses of the structure under the free vibration test utilizing the baffles reduced up to 2.5% and 3.9%, respectively, when compared with the case where no baffles are employed. Also the dynamic magnification factor under harmonic excitation reduced up to 2.7% proportional to baffles angles. Damping of the structure equipped with this type of TLD increased in a range of 3.93-6.38% when compared to the case of using no damper.
dc.publisher Academic Press
dc.relation.isbasedon 10.1016/j.jfluidstructs.2011.08.016
dc.subject Passive control Tuned liquid damper Rotatable baffle Damping ratio Benchmark building, Fluids & Plasmas
dc.subject Passive control Tuned liquid damper Rotatable baffle Damping ratio Benchmark building; Fluids & Plasmas
dc.title Experimental investigation of utilizing TLD with baffles in a scaled down 5-story benchmark building
dc.type Journal Article
dc.parent Journal of Fluids and Structures
dc.journal.volume 1
dc.journal.volume 28
dc.journal.number 1 en_US
dc.publocation United Kingdom en_US
dc.publocation Los Alamitos
dc.identifier.startpage 194 en_US
dc.identifier.endpage 210 en_US
dc.cauo.name FEIT.School of Civil and Environmental Engineering en_US
dc.conference Verified OK en_US
dc.conference IEEE/WIC/ACM International Conference on Web Intelligence
dc.for 0913 Mechanical Engineering
dc.for 0905 Civil Engineering
dc.personcode 0000064853 en_US
dc.personcode 0000064855 en_US
dc.personcode 870186 en_US
dc.personcode 0000064854 en_US
dc.percentage 50 en_US
dc.classification.name Civil Engineering en_US
dc.classification.type FOR-08 en_US
dc.edition en_US
dc.custom en_US
dc.date.activity en_US
dc.date.activity 2005-09-19
dc.location.activity en_US
dc.location.activity Compiegne, France
dc.description.keywords Passive control Tuned liquid damper Rotatable baffle Damping ratio Benchmark building en_US
dc.description.keywords ATTENTION
dc.description.keywords Passive control Tuned liquid damper Rotatable baffle Damping ratio Benchmark building
dc.description.keywords Passive control Tuned liquid damper Rotatable baffle Damping ratio Benchmark building
dc.description.keywords Passive control Tuned liquid damper Rotatable baffle Damping ratio Benchmark building
dc.description.keywords Passive control Tuned liquid damper Rotatable baffle Damping ratio Benchmark building
dc.description.keywords Passive control Tuned liquid damper Rotatable baffle Damping ratio Benchmark building
pubs.embargo.period Not known
pubs.organisational-group /University of Technology Sydney
pubs.organisational-group /University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group /University of Technology Sydney/Strength - Built Infrastructure


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