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Generative Design of Acoustic and Mechanical Metamaterials

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Advanced Composites".

Deadline for manuscript submissions: closed (20 January 2024) | Viewed by 1948

Special Issue Editor


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Guest Editor
Computed Materiality, 95 Edmund Street, St. Heliers, Auckland 1071, New Zealand
Interests: acoustic and mechanical metamaterials; additive manufacturing; wave manipulation

Special Issue Information

Dear Colleagues,

In recent decades, we have witnessed a rapid growth in the study of metamaterials, which have attracted increasing attention from researchers not only from the academic community seeking to further understand metamaterials, but also from industries seeking to apply this technology to products. As a kind of novel artificial material, metamaterials exhibit many unusal physical properties and exotic functionalities, such as a negative refraction index, compression–torsion effect, and a negative Possion’s ratio and stiffness, which shows an unprecedented ability to arbitrarily manipulate the properties of waves, including their amplitude, phase, and wave propagation. These features, together with advanced manufacturing methods, such as 3D/4D printing technology, make acoustic and mechanical metamaterials a class of promising materials or structures in physics, materials science, and engineering.

The main theme of this Special Issue is to create a platform for researchers and engineers to promote the research in the exciting field of the design and application of acoustic and mechanical metamaterials. The topics will include, but are not limited to:

  • Acoustic and mechanical metamaterials/metasurface;
  • Large-scale and hybrid metamaterials design and fabrication;
  • Tunable, reconfigurable, and programmable metamaterials;
  • Artificial-intelligence-driven metamaterials and device designs;
  • Advance in cloaking and invisibility;
  • Metamaterials for acoustic sensing and detecting;
  • Metamaterials for noise and vibration control;
  • Topological insulators.

Dr. Emilio Calius
Guest Editor

Manuscript Submission Information

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Keywords

  • acoustic metamaterials
  • wave manipulation
  • vibration and noise control
  • topological insulators

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Published Papers (1 paper)

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Research

22 pages, 3386 KiB  
Article
A Power-Based Framework for Quantifying Parameter Uncertainties in Finite Vibroacoustic Metamaterial Plates
by Heiko Atzrodt, Arun Maniam, Marvin Droste, Sebastian Rieß and Moritz Hülsebrock
Materials 2023, 16(14), 5139; https://doi.org/10.3390/ma16145139 - 21 Jul 2023
Viewed by 1371
Abstract
Vibroacoustic metamaterials (VAMMs) are artificial materials that are specifically designed to control, direct, and manipulate sound waves by creating a frequency gap, known as the stop band, which blocks free wave propagation. In this paper, a new power-based approach that relies on the [...] Read more.
Vibroacoustic metamaterials (VAMMs) are artificial materials that are specifically designed to control, direct, and manipulate sound waves by creating a frequency gap, known as the stop band, which blocks free wave propagation. In this paper, a new power-based approach that relies on the active structural intensity (STI) for predicting the stop band behavior of finite VAMM structures is presented. The proposed method quantifies the power loss in a locally resonant finite VAMM plate in terms of percentage, such as STI99% and STI90%, for stop band prediction. This allows for the quantitative analysis of the vibration attenuation capabilities of a VAMM structure. This study is presented in the context of a two-dimensional VAMM plate with 25 resonators mounted in the middle section of the plate. It has been demonstrated that this method can predict the stop band limits of a finite VAMM plate more accurately than using negative effective mass, unit cell dispersion analysis, or the frequency response function methods. The proposed approach is then implemented to establish a framework for investigating the influence of parameter uncertainties on the stop band behavior of the VAMM plate. Based on the STI99% method, which aims for significant vibration reduction, stricter tolerances in the mass fabrication process are required to ensure the robustness of VAMM. Conversely, the STI90% method suggests that larger fabrication tolerances can be leveraged to achieve a broader stop band range while still meeting the desired performance level, leading to cost savings in manufacturing. Full article
(This article belongs to the Special Issue Generative Design of Acoustic and Mechanical Metamaterials)
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