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Communication Dans Un Congrès Année : 2020

Actuation and measurement of nondispersive near-cut-on guided resonances in a sandwich structure

Résumé

In this work, we establish a link between recent investigations on bending-to-shear conversion phenomena in sandwich structures, and the existence of a local group velocity plateau in the near-cut-on bandwidth of high-order guided resonances. The resulting non-dispersiveness allows the actuation and propagation of these elastic waves over a long range, which is unusual for such structures in the low acoustic bandwidth. The experimental setup involves an array of piezoelectric patches, designed to produce a custom wave shape displacement field as predicted by Floquet-Bloch theory.
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Dates et versions

hal-03160050 , version 1 (04-03-2021)

Identifiants

  • HAL Id : hal-03160050 , version 1

Citer

C Droz, M Ichchou, O Bareille, W Desmet. Actuation and measurement of nondispersive near-cut-on guided resonances in a sandwich structure. Proceedings of the International Conference on Noise and Vibration Engineering, ISMA2020, Sep 2020, Leuven, Belgium. ⟨hal-03160050⟩
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