Predicting the propagation of air-borne noise radiated by the powertrain at high frequencies requires acoustic power data for source modeling. This paper proposes a new model of source based on an acoustic intensity mapping in an anechoic test-bench. Given an energy propagation model, it is possible to back-propagate acoustic intensity data to a model of powertrain, by solving an inverse problem. Application of the method to a 2.0L gasoline powertrain has led to convincing results between 500 and 5,000 Hz, and most of the radiation patterns of the powertrain are well represented in space and frequency.


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    Titel :

    Powertrain Acoustic Characterization at High Frequencies: Acoustic Source Modeling Based on Sound Intensity Measurements


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Gagliardini, L. (Autor:in) / Bousseau, Y. (Autor:in)

    Kongress:

    SAE 2003 Noise & Vibration Conference and Exhibition ; 2003



    Erscheinungsdatum :

    05.05.2003




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Powertrain Acoustic Characterization at High Frequencies: Acoustic Source Modeling Based on Sound Intensity Measurements

    Bousseau, Y. / Gagliardini, L. / Society of Automotive Engineers | British Library Conference Proceedings | 2003



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