Numerical analysis of honeycomb structure with embedded membrane For tranmission loss improvement

Authors

  • Zacharie Laly
  • Christopher Mechefske
  • Sebastian Ghinet
  • Behnam Ashrafi
  • Charly T. Kone

Abstract

Honeycomb structures find use in many applications because of their high stiffness to weight ratio and excellent mechanical
impact energy absorption. However, their acoustic performance is poor. Li et al [1] studied the transmission loss (TL) of lightweight multilayer honeycomb membrane-type acoustic metamaterials experimentally and observed that the sandwich panel acoustic metamaterials exhibit good TL. A lightweight and yet sound-proof honeycomb acoustic metamaterial is investigated by Sui et al. [2] and Lu et al. [3]. The metamaterial structure is made of a lightweight flexible rubber material layer sandwiched between two layers of honeycomb cell plates. They demontrated excellent TL with minimum weight penalty. Li et al. [4] presented a theoretical model to estimate the TL of acoustic micro-membranes, which demonstrate improved TL at low frequency. In this study, the transmission loss of a honeycomb structure with embedded membranes is investigated using the finite element method. It is shown that the transmission loss of the honeycomb structure is significantly improved by the embedded membrane while the TL of the honeycomb structure core alone is zero. The influence of the honeycomb structure cell size is illustrated as well as the effect on the membrane material properties. The investigated structure presents good TL especially at low frequencies.

Additional Files

Published

2023-08-21

How to Cite

1.
Laly Z, Mechefske C, Ghinet S, Ashrafi B, T. Kone C. Numerical analysis of honeycomb structure with embedded membrane For tranmission loss improvement. Canadian Acoustics [Internet]. 2023 Aug. 21 [cited 2024 Nov. 3];50(3):22-3. Available from: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/3966

Issue

Vol. 50 No. 3 (2022)

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 > >>