Numerical simulation and experimental tests of multilayer systems with porous materials

The behavior of multilayer systems with porous and viscoelastic materials is of utmost importance to noise and vibration control inside vehicles, airplanes and other environments. In this paper, some configurations are analyzed and experimental results of surface impedance and absorption are compare...

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Bibliographic Details
Published in:Applied acoustics 1999-12, Vol.58 (4), p.403-418
Main Authors: Gerges, Samir N.Y., Balvedi, Alessandro M.
Format: Article
Language:English
Subjects:
Acoustic
Acoustics
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Numerical simulation
Physics
Porous materials
Structural acoustics and vibration
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Summary:The behavior of multilayer systems with porous and viscoelastic materials is of utmost importance to noise and vibration control inside vehicles, airplanes and other environments. In this paper, some configurations are analyzed and experimental results of surface impedance and absorption are compared with those obtained by numerical simulations. The influence of some characteristics, such as stiffness, tortuosity and flow resistivity in the performance of porous materials is evaluated.
ISSN:0003-682X
1872-910X
DOI:10.1016/S0003-682X(99)00012-2