An experimental verification study was done of the numerical predictions of sound radiation from an automotive valve cover. The valve cover was mounted on the floor of a semi-anechoic chamber with a mechanical shaker attached to the inside of the cover. Transfer functions between the excitation force and the surface motion of the cover surfaces and the radiated sound pressure were measured. The surface motion of the valve cover was input to a numerical radiation prediction program which was used to predict the acoustic radiation using both the Helmholtz integral equation and the Rayleigh integral equation. The predicted and measured sound pressure levels were compared at 25 field points. The verification study showed that the Helmholtz integral equation prediction is good at all locations for this frequency band. The Rayleigh integral equation predictions were reasonable at some frequencies at some points but are not good in general.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Verification of Numerical Acoustic Radiation Predictions


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    SAE Noise and Vibration Conference and Exposition ; 1989



    Publication date :

    1989-05-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Verification of numerical acoustic radiation predictions

    Smith,D.C. / Bernhanrd,R.J. / Technalysis,US et al. | Automotive engineering | 1989



    Speeding-up acoustic predictions

    Tournour, M. / Rossion, J. P. / Bricteux, L. et al. | British Library Conference Proceedings | 2004



    Tribological testing of sliders on discrete track media and verification with numerical predictions

    Duwensee, M. / Lee, D.E. / Yoon, Y. et al. | British Library Online Contents | 2009