| Issue |
MATEC Web Conf.
Volume 283, 2019
The 2nd Franco-Chinese Acoustic Conference (FCAC 2018)
|
|
|---|---|---|
| Article Number | 09003 | |
| Number of page(s) | 6 | |
| Section | Vibroacoustics and Noise Reduction | |
| DOI | https://doi.org/10.1051/matecconf/201928309003 | |
| Published online | 28 June 2019 | |
The acoustic insulation performance of infinite and finite locally resonant metamaterial and phononic crystal plates
1 KU Leuven, Department of Mechanical Engineering, Celestijnenlaan 300, 3001, Leuven, Belgium
2 DMMS lab, Flanders Make
* e-mail: lucas.vanbelle@kuleuven.be
The bending wave stop band behavior of locally resonant metamaterial and phononic crystal plates can strongly improve the vibration performance of flexible plates in targeted frequency ranges. Their acoustic insulation performance, however, is found to strongly depend on the stop band mechanism, also influencing the frequency range of improvement. While sound transmission loss improvements are predicted for both infinite periodic plates, the finite phononic crystal plate performance can differ significantly.
© The Authors, published by EDP Sciences, 2019
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