The vehicle–track coupled system has a random nature in the time–space domain. This paper proposes a computational model to analyse the temporal–spatial stochastic vibrations of vehicle–track systems, where the vehicle–track system is divided into a vehicle subsystem, track subsystem, and interfacial subsystem between the wheel and rail. In this model, the time-varying randomicity of dynamical parameters of the vehicle system, correlation, and randomness of the track structural parameters in the time–space joint dimensions, and randomness of the track random irregularities are considered. A probability dimension-reduction method was used to randomly combine different random variables. Furthermore, the probability density evolution method was applied to solve the delivery problem of probabilities between excitation inputs and response outputs. The temporal–spatial stochastic vibrations of the vehicle–track system with different coefficients of variation were studied, in which we assumed that the dynamic parameters obeyed the normal distribution, and the stochastic simulation method of the track random irregularities is probed into. The calculated results from this model are consistent with the actual measured results and physical conceptions. Thus, the temporal–spatial stochastic evolutionary mechanism can be explored, and the limits of dynamic indices can be formulated by using this developed model.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    A new model for temporal–spatial stochastic analysis of vehicle–track coupled systems


    Contributors:
    Xu, Lei (author) / Zhai, Wanming (author)

    Published in:

    Vehicle System Dynamics ; 55 , 3 ; 427-448


    Publication date :

    2017-03-04


    Size :

    22 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English





    Vehicle-Track Coupled Dynamics

    True, Hans | Taylor & Francis Verlag | 2022


    Coupled Vehicle/Track Dynamics

    EL MARAGHY, W. H. / DOKAINISH, M. A. | Taylor & Francis Verlag | 1975



    Vehicle–Track Coupled Dynamics Models

    Zhai, Wanming | Springer Verlag | 2019