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image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Engineering Structur...arrow_drop_down
image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
Engineering Structures
Article . 2021 . Peer-reviewed
License: Elsevier TDM
Data sources: Crossref
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Self-centering hybrid dampers for improving seismic resilience

Authors: Junlin Li; Wei Wang; Zong Cao;

Self-centering hybrid dampers for improving seismic resilience

Abstract

Abstract A comprehensive study on self-centering hybrid dampers (SCHDs) for improving seismic resilience is presented. The considered damper is composed of a pre-compressed friction spring part and a viscous fluid part. The pre-compressed friction spring part provides moderate strength, energy dissipating capacity and favorable recentering capacity, while the viscous fluid part implements additional energy dissipating capacity. The hybrid energy dissipating mechanism derives from the combination of frictional and viscous forces. The mechanical performance of friction spring and viscous damper is firstly introduced, preliminary experimental studies are conducted as validations. Then the working principle and fabrication process of the proposed damper are introduced subsequently. This is followed by cyclic tests on a SCHD specimen under multiple sinusoidal excitations. The specimen exhibits anticipated and reliable hysteretic behaviors under dynamic excitations with different frequencies. Following the experimental study, performance based seismic design is adapted to self-centering hybrid damping braced frames (SCHDFs). Nonlinear response history analyses (NRHA) are conducted to validate the practicability and adequacy of the proposed design procedure. Results of NRHA reveal that the considered system designed based on the proposed design procedure can meet both transient and residual inter-story deformation requirements. Moreover, NRHA are also performed on buckling restrained braced frames (BRBFs) and self-centering friction spring braced frames (RSBFs) designed with the same objectives. Results validate the preferable resilience of SCHDFs. The proposed system exhibits better recentering mechanism compared with BRBFs, and reduces the intense floor velocity and acceleration responses of RSBFs.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
45
Top 1%
Top 10%
Top 1%
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