Frequency independent damped outrigger systems for multi-mode seismic control of super tall buildings with frequency independent negative stiffness enhancement

Simple item page
dc.citation.firstpage2731en_US
dc.citation.issueNumber9en_US
dc.citation.journalTitleEarthquake Engineering & Structural Dynamicsen_US
dc.citation.lastpage2754en_US
dc.citation.volumeNumber52en_US
dc.contributor.authorWang, Mengen_US
dc.contributor.authorSun, Fei-Feien_US
dc.contributor.authorKoetaka, Yujien_US
dc.contributor.authorChen, Linen_US
dc.contributor.authorNagarajaiah, Satishen_US
dc.contributor.authorDu, Xiu-Lien_US
dc.date.accessioned2023-07-21T16:13:38Zen_US
dc.date.available2023-07-21T16:13:38Zen_US
dc.date.issued2023en_US
dc.description.abstractDamped outrigger system is effective for improving energy dissipation for tall buildings. However, conventional damped outrigger (CDO) system with viscous damping has two limitations: (i) its maximum damping ratio cannot be improved when outrigger/column stiffness is inadequate; (ii) different modes achieve their maximum damping ratios at different outrigger damping values, and thus the dampers cannot be optimized to simultaneously reduce vibrations of multiple modes of concern to their minimum. In this paper, a purely frequency-independent negative stiffness damped outrigger (FI-NSDO) system is proposed by combining frequency-independent damper (FID) and negative stiffness device (NSD). The damped outrigger with FID can achieve the maximum damping ratio for all modes as compared to frequency-dependent damper like viscous damper. As the NSD has the features of assisting and enhancing motion and frequency-independence, the utilization of NSD will considerably improve the maximum damping ratios when outrigger/column stiffness is inadequate and maintain the frequency-independent feature of the whole system. Therefore, the FI-NSDO has the capability of simultaneously increasing the damping ratios of all target modes to their maximum values. Analysis in frequency domain and time domain, demonstrate that the proposed FI-NSDO performs better in controlling the multi-mode vibration of seismic responses.en_US
dc.identifier.citationWang, Meng, Sun, Fei-Fei, Koetaka, Yuji, et al.. "Frequency independent damped outrigger systems for multi-mode seismic control of super tall buildings with frequency independent negative stiffness enhancement." <i>Earthquake Engineering & Structural Dynamics,</i> 52, no. 9 (2023) Wiley: 2731-2754. https://doi.org/10.1002/eqe.3891.en_US
dc.identifier.digital2023-Wang-2en_US
dc.identifier.doihttps://doi.org/10.1002/eqe.3891en_US
dc.identifier.urihttps://hdl.handle.net/1911/114971en_US
dc.language.isoengen_US
dc.publisherWileyen_US
dc.rightsExcept where otherwise noted, this work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives (CC BY-NC-ND) license.  Permission to reuse, publish, or reproduce the work beyond the terms of the license or beyond the bounds of Fair Use or other exemptions to copyright law must be obtained from the copyright holder.en_US
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/en_US
dc.titleFrequency independent damped outrigger systems for multi-mode seismic control of super tall buildings with frequency independent negative stiffness enhancementen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
2023-Wang-2.pdf
Size:
4.15 MB
Format:
Adobe Portable Document Format
Download
Collections
Faculty Publications
Civil and Environmental Engineering Publications
Materials Science and NanoEngineering Publications
Mechanical Engineering Publications