Investigations on a Periodic Acoustic Metamaterial for Multi-Tonal Noise Attenuation

Authors

  • Zacharie Laly Université de SherbrookeQueen's University, CA
  • Christopher Mechefske Queen's University, CA
  • Sebastian Ghinet National Research Council Canada, CA
  • Behnam Ashrafi National Research Council Canada, CA
  • Charly Kone National Research Council Canada, CA

Abstract

In this paper, a design of an acoustic metamaterial based on a periodic Helmholtz resonator is proposed and its acoustic attenuation performance is studied using the finite element method. The Helmholtz resonator contains a damping material in its cavity in the form of a membrane to which small mass is attached. The resonator with an extended neck within the cavity is periodically embedded within a porous material. The added mass, which is attached to the membrane is a solid material and is modelled as a linear isotropic elastic material as well as the membrane whose boundaries are fixed. The transmission loss of the proposed metamaterial design presents multiple resonant peaks while the conventional resonator shows only one peak. It is demonstrated that the number of the transmission loss peaks and the resonant frequencies can be controlled by the parameters of the attached mass such as its material properties and size. The proposed metamaterial design can attenuate the noise at multiple frequencies simultaneously.

Additional Files

Published

2023-10-09

How to Cite

1.
Laly Z, Mechefske C, Ghinet S, Ashrafi B, Kone C. Investigations on a Periodic Acoustic Metamaterial for Multi-Tonal Noise Attenuation. Canadian Acoustics [Internet]. 2023 Oct. 9 [cited 2024 Nov. 23];51(3):136-7. Available from: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/4046

Issue

Vol. 51 No. 3 (2023): Proceedings of Acoustics Week in Canada 2023 Conference

Section

Proceedings of the Acoustics Week in Canada

License

Author Licensing Addendum

This Licensing Addendum ("Addendum") is entered into between the undersigned Author(s) and Canadian Acoustics journal published by the Canadian Acoustical Association (hereinafter referred to as the "Publisher"). The Author(s) and the Publisher agree as follows:

  1. Retained Rights: The Author(s) retain(s) the following rights:

    • The right to reproduce, distribute, and publicly display the Work on the Author's personal website or the website of the Author's institution.
    • The right to use the Work in the Author's teaching activities and presentations.
    • The right to include the Work in a compilation for the Author's personal use, not for sale.

  2. Grant of License: The Author(s) grant(s) to the Publisher a worldwide exclusive license to publish, reproduce, distribute, and display the Work in Canadian Acoustics and any other formats and media deemed appropriate by the Publisher.

  3. Attribution: The Publisher agrees to include proper attribution to the Author(s) in all publications and reproductions of the Work.

  4. No Conflict: This Addendum is intended to be in harmony with, and not in conflict with, the terms and conditions of the original agreement entered into between the Author(s) and the Publisher.

  5. Copyright Clause: Copyright on articles is held by the Author(s). The corresponding Author has the right to grant on behalf of all Authors and does grant on behalf of all Authors, a worldwide exclusive license to the Publisher and its licensees in perpetuity, in all forms, formats, and media (whether known now or created in the future), including but not limited to the rights to publish, reproduce, distribute, display, store, translate, create adaptations, reprints, include within collections, and create summaries, extracts, and/or abstracts of the Contribution.

Most read articles by the same author(s)

1 2 3 > >>