A Dynamic Homogenisation Technique Applied to an Alberich Rubber Coating
We consider the problem of modelling an anechoic rubber coating of Alberich type, on a water loaded steel plate, by a dynamic homogenisation technique based on material parameters with polynomial dependence of depth. By fitting reflection and transmission coefficients, as functions of center frequency, incidence angle and temperature, to observed coefficients with a genetic algorithm, a homogenisation of the coating for each temperature was sought. Numerical predictions with the final models are found to be in fairly good agreement with experimental data, despite the fact that wave interactions occurring between the rubber material and the air cavities are not modelled in detail.
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Document Type: Research Article
Publication date: November 1, 2003
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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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