Development and validation of a nonlinear dynamic model for tuned liquid multiple columns dampers

dc.contributor.author Cao, Liang
dc.contributor.author Gong, Yongqiang
dc.contributor.author Ubertini, Filippo
dc.contributor.author Laflamme, Simon
dc.contributor.author Wu, Hao
dc.contributor.author Chen, An
dc.contributor.author Laflamme, Simon
dc.contributor.department Civil, Construction and Environmental Engineering
dc.contributor.department Electrical and Computer Engineering
dc.contributor.department Center for Nondestructive Evaluation (CNDE)
dc.date 2020-08-13T18:26:46.000
dc.date.accessioned 2021-02-24T22:21:53Z
dc.date.available 2021-02-24T22:21:53Z
dc.date.copyright Wed Jan 01 00:00:00 UTC 2020
dc.date.issued 2020-11-24
dc.description.abstract <p>The tuned liquid column damper (TLCD), a passive damping device consisting of a large U-tube with oscillating liquid, has been shown to be effective at mitigating structural responses under natural hazards. Aside from their bandwidth-limited mitigation capabilities, a key limitation of TLCDs is in their large geometries that occupy large space often at prime locations. A solution is to implement multi-columned versions, termed tuned liquid multiple columns dampers (TLMCDs), which have the potential to be tuned to multiple frequencies and occupy less space by leveraging the multiple columns to allow fluid movement. However, mathematical models characterizing their dynamic behavior must be developed enabling proper tuning and sizing in the design process. In this paper, a new analytical model characterizing a TLMCD as a multiple degrees-of-freedom coupled nonlinear system is presented. The frequencies of free vibration and vibration modes of a TLMCD are identified in closed-form formulations. Results are validated using computational fluid dynamics simulations, and show that the analytical model can predict the damper’s liquid surface movements as well as its capability to reduce structural vibration when the structure is subjected to harmonic excitations. A parametric study is conducted to investigate the effect of head loss coefficients, column spacing, cross-section area ratios, and column numbers on mitigating structural response. It is found that, while TLMCDs are less effective than traditional TLCDs under an equal liquid mass, they can provide enhanced performance under geometric restrictions.</p>
dc.description.comments <p>This is a manuscript of an article published as Cao, Liang, Yongqiang Gong, Filippo Ubertini, Hao Wu, An Chen, and Simon Laflamme. "Development and validation of a nonlinear dynamic model for tuned liquid multiple columns dampers." <em>Journal of Sound and Vibration</em> 487 (2020): 115624. DOI: <a href="https://doi.org/10.1016/j.jsv.2020.115624" target="_blank">10.1016/j.jsv.2020.115624</a>. Posted with permission.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/ccee_pubs/282/
dc.identifier.articleid 1283
dc.identifier.contextkey 18904641
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath ccee_pubs/282
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/93618
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/ccee_pubs/282/2020_LaflammeSimon_DevelopmentValidation.pdf|||Fri Jan 14 23:10:47 UTC 2022
dc.source.uri 10.1016/j.jsv.2020.115624
dc.subject.disciplines Acoustics, Dynamics, and Controls
dc.subject.disciplines Electrical and Computer Engineering
dc.subject.disciplines Structural Engineering
dc.subject.keywords Tuned liquid column damper
dc.subject.keywords structural control
dc.subject.keywords damping
dc.subject.keywords passive control
dc.subject.keywords analytical solution
dc.subject.keywords computational fluid dynamics
dc.title Development and validation of a nonlinear dynamic model for tuned liquid multiple columns dampers
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isAuthorOfPublication 84547f08-8710-4934-b91e-ba5f46ab9abe
relation.isOrgUnitOfPublication 933e9c94-323c-4da9-9e8e-861692825f91
relation.isOrgUnitOfPublication a75a044c-d11e-44cd-af4f-dab1d83339ff
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