Transmission of Sound Through Double-Plate Panel Structures: aspects of modeling a single-stud double-leaf partition using the finite element method

Kristoffer Ahrens Dickow, Parthkumar Gandalal Domadiya, Lars Andersen, Poul Henning Kirkegaard

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    Abstract

    In the present paper, a finite-element model of a single-stud double-plate panel structure is implemented to investigate the transmission of diffuse incident sound waves through typical simple lightweight constructions. A parameter study of the effect of including the internal acoustic medium in single-stud double-leaf partitions is performed. Three scenarios are investigated: 1) A panel structure including structure-borne transmission only, i.e. without air inclusions between the plates, 2) a panel structure including an acoustic medium between the plates, and 3) a simplified model where the fluid continuum elements are replaced by a simple spring connection between the two plates. The investigations are performed as parameter studies focusing on the effect of changes in the model. A fully coupled analysis is performed in which solid continuum finite elements are adopted for the structure, whereas the acoustic medium is discretized into fluid continuum elements. The computations are carried out in frequency domain in the range below 2 kHz and the load acts as an approximated diffuse field on one side of the panel. The results show that if some of the studs are free to bend, the transmission is dominated by the structural part and the contributions from the air inclusions are negligible.
    Original languageEnglish
    Title of host publicationProceedings of Forum Acusticum 2011 : 27 June - 01 July, Aalborg, Denmark
    EditorsDanish Acoustical Society
    Number of pages6
    Place of PublicationAalborg
    PublisherEuropean Acoustics Association - EAA
    Publication date2011
    Publication statusPublished - 2011
    EventForum Acusticum 2011 - Aalborg, Denmark
    Duration: 27 Jun 20111 Jul 2011
    Conference number: 6

    Conference

    ConferenceForum Acusticum 2011
    Number6
    Country/TerritoryDenmark
    CityAalborg
    Period27/06/201101/07/2011
    SeriesForum Acusticum
    Number6

    Bibliographical note

    The proceedings is also published on a USB.

    Keywords

    • Transmission
    • Sound
    • Double-Plate Panel Structure

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