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Vibro-Acoustic Properties of Auxetic Open Cell Foam: Model and Experimental Results

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The combined mechanical and acoustic properties of auxetic (negative Poisson's ratio) foams are described both from a numerical and experimental point of view. Samples of open cell PU-PE foams with negative Poisson's ratio are produced using a dedicated manufacturing process, and subjected to tensile quasi static and cyclic loading, as well as sound absorption measurements based on ISO 10-534-2 Standard. A homogenization model based on the Biot's theory is also derived to calculate the poroelastic parameters of the foam. The experimental and numerical results are compared and commented to provide explanations regarding the unusual acoustic absorption of these porous materials.
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Document Type: Research Article

Publication date: 2010-03-01

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  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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