An experimental modal model of an early prototype car was constructed and validated against test results. The model was then used to suggest practical hardware modification alternatives which would: (1) shift the steering column resonant frequency away from the idle range, and (2) maintain a low steering column tipp vibration within the 600-750 RPM idle range. This model was also used to evaluate the effectiveness of tuning radiator mounts to the overall vehicle idle quality. It was found that a pair of braces from either the steering column bracket to brake pedal bracket or to the cowl op area could improve idle shake of the test vehicle. The driver side brake pedal brace alone is not effective. However, the passenger side brake pedal brace alone is as effective as the two brake pedal braces together. It was found that the radiator mounts oon the test vehicle are extremely non-linear. Therefore, tuning the mount to improve idle quality is impractical. This study also illustrates that one model validation alone may not be sufficient to establish the adequacy of the model. Models which provide only 'trends' during the validation stage may not be accurate enough for massive hardware modification predictions.


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    Titel :

    Using experimental modal modeling techniques to investigate steering column vibration and idle shake of a passenger car


    Weitere Titelangaben:

    Anwendung experimenteller Modalmodellmethoden zur Untersuchung der Schwingung der Lenksaeule und des Leerlaufschuettelns bei einem Pkw


    Beteiligte:
    Chiang, S.L. (Autor:in)


    Erscheinungsdatum :

    1985


    Format / Umfang :

    19 Seiten, 27 Bilder


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch






    Simulation of Engine Idle Shake Vibration

    Spiekermann, Charles E. / Radcliffe, Clark J. / Hine, Donald S. et al. | SAE Technical Papers | 1983


    Simulation of Engine Idle Shake Vibration

    Radcliffe,C.J. / Picklemann,M.N. / Spiekermann,C.F. et al. | Kraftfahrwesen | 1983


    Simulation of engine idle shake vibration

    Radcliffe, C.J. / Picklemann, M.N. / Spiekermann, E. et al. | Tema Archiv | 1983