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

R.P. Moiseyenko , Yan Pennec (1, 2) , R. Marchal , B. Bonello , Bahram Djafari-Rouhani (2, 1)

1 IEMN - Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520
2 PHYSIQUE - IEMN - Physique - IEMN

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.

Mots clés: Electromagnetic shielding; Light transmission; Metamaterials; Shielding; Surface waves; Ultrasonic waves; Acoustic metamaterial; Low frequency acoustic; Periodic arrays; Physical phenomena; Rectangular holes; Resonant transmissions; Sub-wavelength; Thin plate; Acoustic wave propagation

Domaines: Physique [physics]

R.P. Moiseyenko, Yan Pennec, R. Marchal, B. Bonello, Bahram Djafari-Rouhani. Broadband sound shielding of Lamb waves through a periodic array of junctions. 2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics, METAMATERIALS 2014, Aug 2014, Copenhagen, Denmark. pp.100-102, ⟨10.1109/MetaMaterials.2014.6948609⟩. ⟨hal-03508189⟩