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dc.contributor.author
Chondrogiannis, Kyriakos Alexandros
dc.contributor.author
Dertimanis, Vasilis
dc.contributor.author
Jeremic, Boris
dc.contributor.author
Chatzi, Eleni
dc.date.accessioned
2023-09-06T08:47:12Z
dc.date.available
2023-09-04T06:43:40Z
dc.date.available
2023-09-06T08:47:12Z
dc.date.issued
2023-12-15
dc.identifier.issn
0020-7403
dc.identifier.other
10.1016/j.ijmecsci.2023.108640
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/629480
dc.identifier.doi
10.3929/ethz-b-000629480
dc.description.abstract
The principle of influencing oscillation amplitudes of a primary system via secondary attachments can be enhanced with inclusion of nonlinear mechanisms towards energy absorption. This work exploits such a scheme, termed the NegSV device, which harnesses a geometrically nonlinear mechanism to create a negative stiffness system for vibration attenuation. The suggested device succeeds in shifting the stiffness characteristics of the primary system and, therefore, alters the overall dynamics without additional mass requirements. The top part of a structure can act as a resonator with respect to the lower by matching the respective resonant frequencies and thus directing energy at specified locations. Analytical solutions demonstrate the improvement of the dynamic performance of a system, which is modified with attachment of the proposed device. Physical testing on a 3 dimensional frame structure is further performed, via shaking table tests, with the proposed nonlinear mechanism mounted at the top storey of the experimental structure. The experiment reveals reduction of acceleration and inter-storey drift response at all levels below the retrofit, while the requirement of increased top-storey drifts is identified. Nonlinear finite element analyses are finally performed on a detailed numerical model, which demonstrate agreement with the experimental measurements and are exploited for additional improvement of the mechanism's design. The proposed nonlinear device shows significant potential in attenuating structural vibration, while further offering the benefit of ease of installation.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Elsevier
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
dc.subject
Vibration attenuation
en_US
dc.subject
Negative stiffness
en_US
dc.subject
Geometric nonlinearity
en_US
dc.title
Design of the negative stiffness NegSV mechanism for structural vibration attenuation exploiting resonance
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 4.0 International
dc.date.published
2023-07-24
ethz.journal.title
International Journal of Mechanical Sciences
ethz.journal.volume
260
en_US
ethz.journal.abbreviated
Int. J. Mech. Sci.
ethz.pages.start
108640
en_US
ethz.size
17 p.
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.grant
Innovative ground interface concepts for structure protection
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
Amsterdam
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02115 - Dep. Bau, Umwelt und Geomatik / Dep. of Civil, Env. and Geomatic Eng.::02605 - Institut für Baustatik u. Konstruktion / Institute of Structural Engineering::03890 - Chatzi, Eleni / Chatzi, Eleni
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02115 - Dep. Bau, Umwelt und Geomatik / Dep. of Civil, Env. and Geomatic Eng.::02605 - Institut für Baustatik u. Konstruktion / Institute of Structural Engineering::03890 - Chatzi, Eleni / Chatzi, Eleni
ethz.grant.agreementno
813424
ethz.grant.fundername
EC
ethz.grant.funderDoi
10.13039/501100000780
ethz.grant.program
H2020
ethz.date.deposited
2023-09-04T06:43:46Z
ethz.source
WOS
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2023-09-06T08:47:13Z
ethz.rosetta.lastUpdated
2024-02-03T03:19:12Z
ethz.rosetta.exportRequired
true
ethz.rosetta.versionExported
true
ethz.COinS
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