Combining the acoustic attenuation behaviors of reactive and dissipative mufflers, a hybrid muffler design may be expected to provide broadband high noise attenuation and low pressure drop. In the present study, a multi-chamber muffler with selective sound-absorbing material placement proposed by Sterrett et al [1] is considered. The one-dimensional analytical approach based on the plane wave propagation theory and three-dimensional substructure boundary element method are developed to predict the acoustic attenuation characteristics of the multi-chamber muffler. The effects of flow-resistivity of sound absorbing material, porosity of perforation and geometrical parameters on the acoustic attenuation performance of the multi-chamber hybrid muffler are investigated in detail.


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    Titel :

    Acoustic Attenuation Performance of a Multi-chamber Muffler with Selective Sound-absorbing Material Placement


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Ji, Zhenlin (Autor:in)

    Kongress:

    SAE 2007 Noise and Vibration Conference and Exhibition ; 2007



    Erscheinungsdatum :

    15.05.2007




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch





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