Architected frames for elastic wave attenuation: Experimental validation and local tuning via affine transformation
File(s)
Published version
Author(s)
Type
Journal Article
Abstract
We experimentally demonstrate the capability of architected plates, with a frame-like cellular structure, to inhibit the propagation of elastic flexural waves. By leveraging the octet topology as a unit cell to design the tested prototypes, a broad and easy-to-tune bandgap is experimentally generated. The experimental outcomes are supported by extensive numerical analyses based on 3D solid elements. Drawing from the underlying dynamic properties of the octet cell, we numerically propose a tailorable design with enhanced filtering capabilities. We transform the geometry of the original unit cell by applying a uniaxial scaling factor that, by breaking the in-plane symmetry of the structure, yields independently tuned struts and consequently multiple tunable bandgaps within the same cell. Our findings expand the spectrum of available numerical analyses on the octet lattice, taking it a significant step closer to its physical implementation. The ability of the octet lattice to control the propagation of flexural vibrations is significant within various applications in the mechanical and civil engineering domains, and we note such frame-like designs could lead to advancements in energy harvesting and vibration protection devices (e.g., lightweight and resonance-tunable absorbers).
Date Issued
2022-11-14
Date Acceptance
2022-10-25
Citation
Applied Physics Letters, 2022, 121 (20)
ISSN
0003-6951
Publisher
American Institute of Physics
Journal / Book Title
Applied Physics Letters
Volume
121
Issue
20
Copyright Statement
© 2022 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/)
License URL
Identifier
https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000885262000026&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=a2bf6146997ec60c407a63945d4e92bb
Subjects
BAND-GAPS
FREQUENCY
HOMOGENIZATION
MICROLATTICES
Physical Sciences
Physics
Physics, Applied
PROPAGATION
Science & Technology
Publication Status
Published
Article Number
ARTN 201702