A quarter-car model is used to investigate the vibration response of cars with uncertainty under random road input excitations in this paper. The sprung mass, unsprung mass, suspension damping, suspension stiffness, and tyre stiffness are considered as random variables. The road irregularity is considered a Gaussian random process and modelled by means of a simple exponential power spectral density. The power spectral density, mean value, standard deviation, and variation coefficient of the vehicle's natural frequencies and mode shapes are obtained by using the Monte Carlo simulation method. The computational expressions for the numerical characteristics of the mean square value of the vehicles random response in the frequency domain are developed by means of the random variable's functional moment method. The influences of the randomness of the vehicle's parameters on the vehicle's dynamic response are investigated in detail using a practical example, and some useful conclusions are obtained.


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    Title :

    A stochastic quarter-car model for dynamic analysis of vehicles with uncertain parameters


    Additional title:

    Stochastisches Viertelfahrzeugmodell bei dynamischer Analyse von Fahrzeugen mit unsicheren Parametern


    Contributors:
    Gao, Wei (author) / Zhang, Nong (author) / Dai, Jun (author)

    Published in:

    Vehicle System Dynamics ; 46 , 12 ; 1159-1169


    Publication date :

    2008


    Size :

    11 Seiten, 4 Bilder, 4 Tabellen, 22 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English





    A stochastic quarter-car model for dynamic analysis of vehicles with uncertain parameters

    Gao, Wei / Zhang, Nong / Dai, Jun | Taylor & Francis Verlag | 2008


    A stochastic quarter-car model for dynamic analysis of vehicles with uncertain parameters

    Gao,W. / Zhang,N. / Dai,J. et al. | Automotive engineering | 2008


    Stochastic Dynamic System Suboptimal Control with Uncertain Parameters

    Lee, M.h. / Kolodziej, W.J. / Mohler, R.R. | IEEE | 1985


    Stochastic dynamic system suboptimal control with uncertain parameters

    Lee, M.H. / Lolodziej, W.J. / Mohler, R.R. | Tema Archive | 1985