Recent technical efforts at Sandia National Laboratories have identified a need for broadband high-frequency vibration isolation spanning a wide range of ultrasonic frequencies. To fill this need, phononic pseudocrystal isolators based upon a structure with cyclic symmetry and radial self-similarity was developed that can potentially suppress frequency transmission across a range far larger than that observed for normal phononic crystals. To enable calculation of transmission characteristics for these articles, boundary conditions enabling half-channel calculations are proposed and their validity demonstrated for both longitudinal and shear waves. These boundary conditions also apply to conventional phononic crystals and can result in significant savings when properly applied for normal incidence longitudinal and shear waves. Additionally, this paper demonstrates and gives formulas for implementing energy density methods that can be used to track wave extinction within phononic pseudocrystals as well as canonical phononic crystal structures.
Skip Nav Destination
Article navigation
8 May 2022
184th Meeting of the Acoustical Society of America
8–12 May 2023
Chicago, Illinois
Computational Acoustics: Paper 4pCA2
October 22 2024
Computational modeling of phononic pseudocrystal isolators
S. Hales Swift;
S. Hales Swift
1
Department of Photonic and Phononic Microsystems, Sandia National Laboratories
, Albuquerque, NM, 87114, USA
; hales.swift@gmail.com
Search for other works by this author on:
Chandler B. Smith;
Chandler B. Smith
2
Simulation Modeling Sciences, Sandia National Laboratories
, Albuquerque, NM, 89123, USA
; chasmit@sandia.gov
Search for other works by this author on:
Ihab F. El-Kady;
Ihab F. El-Kady
4
Department of Photonic and Phononic Microsystems, Sandia National Laboratories
, Albuquerque, NM, 87123, USA
; ielkady@sandia.gov
Search for other works by this author on:
Jerry W. Rouse
Jerry W. Rouse
5
Sandia National Laboratories, Analytical Structural Dynamics
, Albuquerque, NM, 87123, USA
; jwrouse@sandia.gov
Search for other works by this author on:
Proc. Mtgs. Acoust. 51, 022007 (2023)
Article history
Received:
September 24 2024
Accepted:
October 03 2024
Connected Content
This is a companion to:
Modeling the performance of a family of phononic pseudo-crystal interposers
Citation
S. Hales Swift, Chandler B. Smith, Rick A. Kellogg, Ihab F. El-Kady, Jerry W. Rouse; Computational modeling of phononic pseudocrystal isolators. Proc. Mtgs. Acoust. 8 May 2023; 51 (1): 022007. https://doi.org/10.1121/2.0001968
Download citation file:
14
Views
Citing articles via
Flyback sonic booms from Falcon-9 rockets: Measured data and some considerations for future models
Mark C. Anderson, Kent L. Gee, et al.
Tunable lenses with liquid-based phasing for ultrasonic beamforming
Sina Rostami, Joel Mobley
Related Content
Large-scale simulation of high-intensity focused ultrasound with Sierra/SD
Proc. Mtgs. Acoust. (October 2023)