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dc.contributor.author
Kalderon, Moris
dc.contributor.author
Mantakas, Antonios
dc.contributor.author
Chondrogiannis, Kyriakos Alexandros
dc.contributor.author
Antoniadis, Ioannis A.
dc.contributor.editor
Papadrakakis, Manolis
dc.contributor.editor
Fragiadakis, Michalis
dc.date.accessioned
2023-11-29T15:35:41Z
dc.date.available
2023-11-29T13:48:20Z
dc.date.available
2023-11-29T15:35:41Z
dc.date.issued
2023-10
dc.identifier.isbn
978-618-5827-01-4
en_US
dc.identifier.isbn
978-618-85072-9-6
en_US
dc.identifier.other
10.7712/120123.10452.20430
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/644470
dc.identifier.doi
10.3929/ethz-b-000644470
dc.description.abstract
Phononic structures with periodic unit-cells that exhibit Bragg scattering, have been investigated during the latest years by various researchers due to their extraordinary wave manipulation and filtering properties. One major feature of these metamaterials is their ability to generate stopbands or bandgaps in the frequency domain, hence presenting significant vibration attenuation properties. However, this mechanism presents certain design constraints in generating broadband bandgaps, especially in the low-frequency range, where large masses are required. To this end, a novel dynamic directional amplifier, namely the DDA, is introduced as a means to artificially increase the inertia of an oscillating mass. The DDA is realized by imposing kinematic constraints to the degrees of freedom (DoFs) of the oscillator, hence inertia is increased by coupling the horizontal and vertical motion. In this study, the DDA is implemented in an experimental scaled phononic set-up that is constructed using LEGO® Technic components. Experimental testing is undertaken as a feasibility assessment of the concept and results indicate the low-frequency wave attenuation properties of the structure.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Institute of Structural Analysis and Antiseismic Research School of Civil Engineering, National Technical University of Athens (NTUA)
en_US
dc.rights.uri
http://rightsstatements.org/page/InC-NC/1.0/
dc.subject
Phononic structures
en_US
dc.subject
Metamaterials
en_US
dc.subject
Amplification mechanism
en_US
dc.subject
Experiment
en_US
dc.subject
Vibration control
en_US
dc.title
Experimental study of phononic structures with DDA enhanced unit-cells
en_US
dc.type
Conference Paper
dc.rights.license
In Copyright - Non-Commercial Use Permitted
ethz.book.title
COMPDYN 2023: 9th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering. Proceedings Volume I
en_US
ethz.journal.title
COMPDYN Proceedings
ethz.pages.start
994
en_US
ethz.pages.end
1004
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.event
9th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COMPDYN 2023)
en_US
ethz.event.location
Athens, Greece
en_US
ethz.event.date
June 12-14, 2023
en_US
ethz.grant
Innovative ground interface concepts for structure protection
en_US
ethz.publication.place
Athens
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
en_US
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
en_US
ethz.grant.agreementno
813424
ethz.grant.fundername
EC
ethz.grant.funderDoi
10.13039/501100000780
ethz.grant.program
H2020
ethz.date.deposited
2023-11-29T13:48:20Z
ethz.source
FORM
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2023-11-29T15:35:42Z
ethz.rosetta.lastUpdated
2024-02-03T07:19:24Z
ethz.rosetta.exportRequired
true
ethz.rosetta.versionExported
true
ethz.COinS
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