In this paper, Power Flow Boundary Element Method (PFBEM) is studied as a new tool of the noise and vibration analysis in medium-to-high frequency ranges, and the noise and vibration prediction software using this method is developed. The developed prediction system includes both direct and indirect approaches, and also offers the various functions like baffled condition, absorption boundary condition and so forth. To verify the accuracy, the developed prediction system is applied to the prediction of the vibration energy distributions in simple beams and thin plates, and the results are compared with the exact solutions of Power Flow Analysis (PFA). As practical examples, car cabins surrounded by the materials of different absorption coefficients are modeled and the distributions of smoothed acoustical energy density are successfully predicted.


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    Title :

    Development of Noise and Vibration Prediction Software in Medium-to-High Frequency Ranges Using Power Flow Boundary Element Method


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    SAE 2003 Noise & Vibration Conference and Exhibition ; 2003



    Publication date :

    2003-05-05




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English