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Broadband sound shielding of Lamb waves through a periodic array of junctions

Archive ouverte : Communication dans un congrès

Moiseyenko, R.P. | Pennec, Yan | Marchal, R. | Bonello, B. | Djafari-Rouhani, Bahram

Edité par HAL CCSD ; Institute of Electrical and Electronics Engineers Inc.

International audience. We study theoretically sub-wavelength physical phenomena such as resonant transmission and broadband sound shielding for Lamb waves propagating in an acoustic metamaterial made of a thin plate drilled with one or two row(s) of rectangular holes. One of the main results is the demonstration of a broadband low frequency acoustic shielding with high attenuation.

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