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.


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    Titel :

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


    Beteiligte:
    Liu, Dongrun (Autor:in) / Tomasini, Gisella Marita (Autor:in) / Cheli, Federico (Autor:in) / Zhong, Mu (Autor:in) / Zhang, Lei (Autor:in) / Lu, Zhaijun (Autor:in)

    Erschienen in:

    Vehicle System Dynamics ; 60 , 2 ; 433-453


    Erscheinungsdatum :

    2022-02-01


    Format / Umfang :

    21 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Unbekannt




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