An energy source simulation method (ESSM) has been developed to determine sound energy density. Using this approach, a specified intensity boundary condition on the surface of a vibrating body is approximated by superimposing energy density sources placed inside the body. The unknown strengths for these sources are then found by minimizing the error on the boundary, using a least squares technique. The superposition of these energy density sources should then approximate the sound radiating from the body. The approach was evaluated in two-dimensions for a circle, square, and a more general geometry. The ESSM proved an excellent tool for predicting the energy density provided that power radiated uniformly in all directions. However, the ESSM could not accurately predict the directional characteristics of the energy density field if the power radiated significantly higher from one side of an object than other sides.


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    Title :

    An Energy Source Simulation Method to Predict Sound Radiation


    Additional title:

    Sae Technical Papers


    Contributors:
    Seybert, A. F. (author) / Herrin, D. W. (author) / Wu, T. W. (author)

    Conference:

    SAE 2001 Noise & Vibration Conference & Exposition ; 2001



    Publication date :

    2001-04-30




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English






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