Understanding the relationship between car-body vibration and train aerodynamic forces is very important for developing a reasonable operation plan when the train passes through the complex terrain under strong wind conditions. In this study, car-body vibration under strong wind conditions was initially investigated with a full-scale test. Then the train aerodynamic forces for different rotation configurations with a train speed of 250 km/h and a wind speed of 25 m/s were further studied using a Computational Fluid Dynamics simulation. The results revealed that the car-body vibration was primarily a low-frequency and large-amplitude rolling and transverse coupling motion in windy conditions, and the roll angle of the car-body with respect to the bogie frame was greater than that of the bogie frame with respect to the track. The train aerodynamic force coefficients are sensitive to the car-body rolling motion in windy conditions. When the car-body rolling from the windward side to the leeward side, the significant reduction in the negative pressure at the bottom of the car-body was the dominant reason for the train lift force increase, and the effect of the aerodynamic force change caused by car-body rolling on the train overturning risk was not significant.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Effect of aerodynamic force change caused by car-body rolling on train overturning safety under strong wind conditions


    Additional title:

    VEHICLE SYSTEM DYNAMICS
    D. LIU ET AL.


    Contributors:

    Published in:

    Vehicle System Dynamics ; 60 , 2 ; 433-453


    Publication date :

    2022-02-01


    Size :

    21 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    The effect of continuously varying wind speed on high-speed train overturning safety

    Liu, Dongrun / Li, Tian / Tao, Yu et al. | SAGE Publications | 2021


    Anti-overturning method and device for high-speed train in strong wind environment

    ZHANG JIE / HUANG FENGYI / GAO GUANGJUN et al. | European Patent Office | 2023

    Free access

    Assessment of train-overturning risk due to strong cross-winds

    Andersson, E. / Haggstrom, J. / Sima, M. et al. | Tema Archive | 2004



    Assessment of train-overturning risk due to strong cross-winds

    Andersson, E / Häggström, J / Sima, M et al. | SAGE Publications | 2004