Acoustic behaviour of 3D periodic structures composed by perforated resonators

  1. Paulo Amado Mendes
  2. Luís Godinho
  3. Adriana Baio Dias
  4. Jesús Carbajo
  5. Jaime Ramis
Libro:
Tecniacústica 2017: 48º Congreso Español de Acústica ; Encuentro Ibérico de Acústica ; European Symposium on Underwater Acoustics Applications ; European Symposium on Sustainable Building Acoustics : A Coruña 3-6 Octubre 2017
  1. Antonio Calvo-Manzano (coord.)
  2. Antonio Pérez-López (coord.)

Editorial: Sociedad Española de Acústica

ISBN: 978-84-87985-29-4

Año de publicación: 2017

Páginas: 1015-1022

Congreso: Congreso Español de Acústica ; Encuentro Ibérico de Acústica (48. 2017. A Coruña)

Tipo: Aportación congreso

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Resumen

The periodic arrangement of acoustic scatterers is known to exhibit peculiar attenuation effects in ranges of forbidden frequencies. On the other hand, the presence of perforated surfaces, eventually complemented by acoustic absorbent materials, has been extensively studied to reduce acoustic reflections by plane surfaces. In the present work, the implementation of an efficient Boundary Element model (BEM) is adopted to numerically reproduce the acoustic behaviour of combined acoustic structures, composed by perforated resonators periodically arranged in space. Different numerical examples will be presented in this work enabling the analysis of the acoustic behaviour of different arrangements and compositions of such absorbent and sound insulation structured materials.

Fuente de los datos: Dialnet