Modeling of heterogeneous perforated panels

• Autores: Jesús Carbajo San Martín, Jaime Ramis Soriano, Luís Godinho, Paulo Amado-Mendes
• Localización: 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 / coord. por Antonio Calvo Manzano, Antonio Pérez López, 2017, ISBN 978-84-87985-29-4, págs. 873-881
• Idioma: inglés
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• Resumen

  • Heterogeneous perforated panels are of great interest as sound absorbers, while achieving a smart high-end decoration in meeting rooms, showrooms, conference halls... However, their uneven nature may pose a difficulty when trying to predict their acoustic performance using traditional impedance models. This work explores the use of different analytical methodologies to estimate the acoustic properties of heterogeneous perforated panels. The proposed approaches are compared to finite element simulations that reproduce an impedance tube setup for different absorber configurations. Preliminary results show that these methodologies may be useful in the design stage of such devices.