Three-dimensional multiresonant lossy sonic crystal for broadband acoustic attenuation: Application to train noise reduction

• Published in: Applied acoustics Vol. 146; pp. 1 - 8
• Main Authors: Cavalieri, T., Cebrecos, A., Groby, J.-P., Chaufour, C., Romero-García, V.
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.03.2019; Elsevier
• Subjects: Acoustic barrier; Acoustic metamaterial; Acoustics; General Physics; Mechanics; Physics; Resonators; Sonic crystals; Acoustic metamaterial; Acoustic barrier; Resonators; Sonic crystals; acoustic metamaterial; acoustic barrier; sonic crystals; resonators

Broadband acoustic attenuation produced by a three dimensional (3D) locally resonant sonic crystal (LRSC), exploiting both the multiple coupled resonances and the Bragg band gaps, is numerically and experimentally reported in this work. The LRSC is made of square cross-section scatterers arranged on...