Sound Attenuation: Implementation of the Biot Theory

F.J.M. van der Eerden, R.M.E.J. Spiering, H. Tijdeman

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    Sound absorption can be modelled as a surface boundary condition by means of the impedance elements in B2000 or as a volume by means of the Limp elements. Both methods are simplifications of a porous material. The Biot theory allows a more complete description of the sound absorbing material and models the acousto-elastic interaction of the elastic frame (skeleton) and the fluid inside. This theory is implemented in B2000 and the first results are presented. A short overview of the experimental sound reduction techniques at the laboratory is presented as well.
    Original languageEnglish
    Number of pages8
    Publication statusPublished - 1998
    Event2nd B2000/MEMCOM Workshop 1998 - Manno, Switzerland
    Duration: 5 Nov 19986 Nov 1998


    Workshop2nd B2000/MEMCOM Workshop 1998
    OtherNovember 5-6


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