Damping of flexural vibrations in rectangular plates using the acoustic black hole effect

By D. O'Boy, V. Krylov, V. Královič. 2010

147 citations recorded by the source corpus.

The reduction of flexural vibration in plate structures has been investigated using the recently reported acoustic black hole effect for flexural wave reflection in plates with the local thickness varying according to h(x) = epsilon x(m) and m >= 2. Since sharp edges of such plates (wedges) are always truncated before x=0, the real reflection coefficients are relatively high, therefore the application of a small amount of damping is required to achieve large reductions in vibration amplitude. This paper presents a numerical model of a plate incorporating an acoustic black hole wedge, with predictions for vibration amplitudes. These are compared to equivalent experimental measurements for a range of applied damping layers. It is concluded that the above-mentioned power-law wedges can be used as effective vibration dampers in plate structures over a wide frequency range of interest. (C) 2010 Elsevier Ltd. All rights reserved.

Subfields: Biomedical Engineering, Computational Mechanics, Control and Systems Engineering

View Paper: https://www.semanticscholar.org/paper/73978938662e7baf2c7e910e6483782666ecc8e3

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In Biomedical Engineering

1. Fabio Semperlotti
2. A. Pelat
3. Francois Gautier
4. S. Conlon

In Computational Mechanics

1. Fabio Semperlotti
2. A. Pelat
3. Francois Gautier
4. S. Conlon

Citations in the corpus

• The acoustic black hole: A review of theory and applications (2020, methodology): “Interpretation of the ABH trapping effect from the multimodal approach [26,27]”