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Architected Lattices for Simultaneous Broadband Attenuation of Airborne Sound and Mechanical Vibrations in All Directions

Bilal, Osama R. and Ballagi, David and Daraio, Chiara (2018) Architected Lattices for Simultaneous Broadband Attenuation of Airborne Sound and Mechanical Vibrations in All Directions. Physical Review Applied, 10 (5). Art. No. 054060. ISSN 2331-7019. http://resolver.caltech.edu/CaltechAUTHORS:20181212-123259440

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Abstract

Phononic crystals and acoustic metamaterials are architected lattices designed to control the propagation of acoustic or elastic waves. In these materials, the dispersion properties and the energy transfer are controlled by selecting the geometry of the lattices and their constitutive material properties. Most designs, however, only affect one mode of energy propagation, transmitted either as acoustic airborne sound or as elastic structural vibrations. Here, we present a design methodology to attenuate both acoustic and elastic waves simultaneously in all polarizations. We experimentally realize a three-dimensional load-bearing architected lattice, composed of a single material, that responds in a broadband frequency range in all directions and polarizations for airborne sound and elastic vibrations simultaneously.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1103/PhysRevApplied.10.054060DOIArticle
https://arxiv.org/abs/1809.01252arXivDiscussion Paper
ORCID:
AuthorORCID
Bilal, Osama R.0000-0003-3803-5084
Daraio, Chiara0000-0001-5296-4440
Additional Information:© 2018 American Physical Society. Received 31 August 2018; published 27 November 2018.
Record Number:CaltechAUTHORS:20181212-123259440
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20181212-123259440
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:91730
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:12 Dec 2018 20:53
Last Modified:12 Dec 2018 20:53

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