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Forum Acusticum 2026

8–12 Sept 2026
Europe/Vienna timezone

Session

A10.04/A12.04 Numerical methods for acoustic materials and metamaterial

A10.04/A12.04
10 Sept 2026, 14:20

Conveners

A10.04/A12.04 Numerical methods for acoustic materials and metamaterial: S063

  • Olivier Dazel (Le Mans Université)
  • Luís Godinho (University of Coimbra, Dep. Eng. Civil)

Presentation materials

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  1. 4054. Subwavelength Corrugated Surfaces for Planar Focusing: A Parametric Analysis (FA2026/110)
    Letizia Chisari (University of Sussex)
    10/09/2026, 14:20
    A10 Materials and Metamaterials

    Subwavelength corrugated surfaces (SCSs) provide a compact and broadband approach for planar acoustic focusing, enabling efficient wavefront manipulation without relying on bulky curved or refractive elements. While the focusing capabilities of SCSs have been demonstrated experimentally and numerically, a systematic understanding of how geometric parameters influence focal efficiency and...

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  2. 4055. Modelling the interaction between a controllable Helmholtz resonator-based acoustic metamaterial and an enclosure using impedance boundary conditions (FA2026/547)
    Yuan Kit Sim (University of Southampton)
    10/09/2026, 14:40
    A10 Materials and Metamaterials

    Helmholtz resonators (HRs) are widely used in the context of room acoustics to reduce the sound pressure peaks induced by room modes. A shortcoming of HRs is that they are very narrowband and can become ineffective as soon as target room eigenfrequencies change, e.g., due to occupancy changes. To address this, a controllable HR-based acoustic metamaterial (HRAM) with resonance frequencies that...

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  3. 4056. Application of the wave finite element method for dispersion prediction in materials with frequency-dependent properties (FA2026/625)
    Bart Van Damme (Empa, Materials Science and Technology)
    10/09/2026, 15:00
    A10 Materials and Metamaterials

    The study of periodic structures (phononic crystals or locally resonant metamaterials) for noise and vibration reduction has led to a plethora of effective modelling tools. For many purposes, in particular the identification of band gaps, dispersion analysis based on the model of a unit cell is a first step in the assessment of the desired functionality. If the unit cell has a complex shape,...

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  4. 4057. Wave-based analysis of sound transmission through finite-sized thick anisotropic laminates (FA2026/674)
    Edwin P.B. Reynders (KU Leuven, Department of Civil Engineering)
    10/09/2026, 15:20
    A10 Materials and Metamaterials

    Thick anisotropic laminated panels exhibit complex vibro-acoustic behavior in which not only direction-dependent material properties, but also shear and cross-sectional deformations, play a crucial role. These effects are not adequately captured by (equivalent) plate theories and instead require a full three-dimensional elasticity analysis. Although modeling approaches such as the transfer...

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  5. 4058. Hybrid FEM–MFS Modeling of Low‑Height Sonic Crystal Noise Barriers with Embedded Resonators (FA2026/684)
    Luís Godinho (University of Coimbra, Dep. Eng. Civil)
    10/09/2026, 15:40
    A10 Materials and Metamaterials

    This work presents a frequency‑domain numerical model based on the coupling of the Finite Element Method (FEM) and the Method of Fundamental Solutions (MFS) for the analysis and design of low‑height sonic crystal noise barriers with embedded resonators. The application focus is the mitigation of railway‑induced noise from trains and trams, in configurations where the barriers are placed in...

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