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Forum Acusticum 2026

8–12 Sept 2026
Europe/Vienna timezone

Session

A23.00 Vibro-Acoustics

A23.00
10 Sept 2026, 15:00

Conveners

A23.00 Vibro-Acoustics: P425

  • Christian Adams (Graz University of Technology)

A23.00 Vibro-Acoustics: S161

  • Christian Adams (Graz University of Technology)

Presentation materials

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  1. 4666. Symmetric and Asymmetric Embroidered Mass Patterns in Membrane Vibration Modes (FA2026/35)
    Ahmed Mehrem (German Institutes of Textile and Fiber)
    10/09/2026, 15:00
    A23 Vibro-Acoustics

    This study investigates the transverse vibration of tensioned membranes with spatially periodic surface-mass variations that represent embroidered fabrics. A two-dimensional membrane model is discretized using finite differences with fixed boundary conditions. The resulting generalized eigenvalue problem accounts for heterogeneous surface mass density and is evaluated for four representative...

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  2. 4667. Effects of Distorted Geometric Scaling on Rectangular Plates (FA2026/348)
    Giada Cardellino (Graz University of Technology)
    11/09/2026, 14:20
    A23 Vibro-Acoustics

    Geometric scaling is widely employed in structural dynamics to predict the behaviour of systems that are too large, costly, or impractical to test at full scale. Under uniform scaling, where all spatial dimensions are scaled by the same factor, well-established and global similitude relationships allow a direct correspondence between modal properties. However, when different scaling factors...

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  3. 4668. Acoustic Classification of Visually Identical Materials Using Impact Emissions (FA2026/55)
    Anna Maly (Joanneum Research Forschungsgesellschaft mbH)
    11/09/2026, 14:40
    A23 Vibro-Acoustics

    Human hearing can reliably distinguish materials based on impact sounds, and machine learning methods can replicate this ability when acoustic differences are pronounced. However, discriminating between materials that sound highly similar even to the human ear remains challenging.In this study, we demonstrate that glass and metal can be effectively separated using simple thresholding of...

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  4. 4669. A Seismic Barrier Strategy Using an Improved Ring-Resonator Periodic Material (RRPM) Based on 2D WFEM (FA2026/66)
    Yunhe XI (ISAE-Supméca)
    11/09/2026, 15:00
    A23 Vibro-Acoustics

    With the rapid expansion of urbanization, an increasing number of high-rise structures require protection from earthquake-induced damage through seismic isolation systems. However, current technologies lack effective isolation barriers capable of mitigating horizontal seismic waves. This study proposes an improved ring-resonator Unit Cell (UC) for two-dimensional (2D) periodic materials is...

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  5. 4670. Discrete Approximation of Continuous Relaxation Spectra in Vibrating Structures (FA2026/353)
    Christian Adams (Graz University of Technology)
    11/09/2026, 15:20
    A23 Vibro-Acoustics

    Continuous relaxation spectra accurately describe how vibrating materials dissipate energy across scales. The fractional wave equation models this behaviour, yet engineering practice often collapses damping into a single structural parameter, obscuring its intrinsic multi-scale nature. Herein, we present a discrete approximation of continuous relaxation spectra based on a superposition of...

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