The basic theory of statistical energy analysis (SEA) is introduced, a commercial heavy duty truck cab is divided into 35 subsystems applying SEA method, and a three dimensional SEA model of the commercial heavy duty truck cab is created. Three basic parameters including modal density, damping loss factor and coupling loss factor are calculated with analytical and experimental methods. The modal density of the regular wall plate of the cab is calculated with traditional formula. The damping loss factors of the regular and complicated plates are obtained using analytical method and steady energy stream method. Meanwhile, the coupling loss factors of structure-structure, structure-sound cavity, and cavity-cavity are also calculated. Four kinds of excitations are in the SEA model, including sound radiation excitation of engine, engine mount vibration excitation, road excitation and wind excitation. The sound radiation excitation of engine, engine vibration mount excitation, and road excitation are obtained through road experiment. A computational fluid dynamics (CFD) model is established, and the wind excitations are simulated and calculated with the CFD model. Then, the interior noise of the truck cab is predicted using SEA model with all the parameters and excitations, and the prediction result is verified by the corresponding experimentation. The influence of acoustic cavity on interior noise is also analyzed. Finally, the prediction and analysis results show that the SEA model has a good prediction precision and can be used to instruct the improvement of interior acoustic performance of a truck cab.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Interior Noise Prediction and Analysis of Heavy Commercial Vehicle Cab


    Additional title:

    Sae Technical Papers


    Contributors:
    Lu, Bingwu (author) / Wang, Dengfeng (author) / Tan, Gangping (author) / Song, Jiqiang (author) / Chen, Shuming (author)

    Conference:

    Commercial Vehicle Engineering Congress ; 2011



    Publication date :

    2011-09-13




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Interior Noise Prediction and Analysis of Heavy Commercial Vehicle Cab

    Chen, S. / Wang, D. / Song, J. et al. | British Library Conference Proceedings | 2011


    Vehicle Interior Noise Prediction

    Brandl, S. / Graf, B. / Biermayer, W. et al. | British Library Conference Proceedings | 2014


    Regulation of Commercial Motor Vehicle Interior Noise Levels

    Morrison, D. W. / Clarke, R. M. | SAE Technical Papers | 1972


    Interior noise prediction process for heavy equipment cabs

    Seybert, A.F. / Hu, T. / Herrin, D.H. et al. | Tema Archive | 1997


    Interior Noise Prediction Process for Heavy Equipment Cabs

    Seybert, A. F. / Hu, T. / Herrin, D. W. et al. | British Library Conference Proceedings | 1997