This paper discusses the development of a computationally efficient numerical method for predicting the acoustics of rattle events upfront in the design cycle. The method combines Finite Elements, Boundary Elements and SEA and enables the loudness of a large number of rattle events to be efficiently predicted across a broad frequency range. A low frequency random vibro-acoustic model is used in conjunction with various closed form analytical expressions in order to quickly predict impact probabilities and locations. An existing method has been extended to estimate the statistics of the contact forces across a broad frequency range. Finally, broadband acoustic radiation is predicted using standard low, mid and high frequency vibro-acoustic methods and used to estimate impact loudness. The approach is discussed and a number of validation examples are presented.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Predicting the Acoustics of Squeak and Rattle


    Additional title:

    Sae Technical Papers


    Contributors:
    Shorter, P.J. (author) / Langley, R.S. (author) / Chaigne, S. (author) / Cotoni, V. (author)

    Conference:

    SAE 2011 Noise and Vibration Conference and Exhibition ; 2011



    Publication date :

    2011-05-17




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Predicting the acoustics of squeak and rattle

    Shorter,P.J. / Cotoni,V. / Chaigne,S. et al. | Automotive engineering | 2011


    Automotive Squeak and Rattle Prevention

    Sammut, Joseph P. / Nolan, Stephen A. | SAE Technical Papers | 1992


    Automotive squeak and rattle prevention

    Nolan,S.A. / Sammut,J.P. / Ford Motor,US | Automotive engineering | 1992


    Improving the Reliability of Squeak & Rattle Test

    Peterson, Edward L. / Sobek, Gary / Chen, Liang et al. | SAE Technical Papers | 2005