During the operation of the Chinese 250 km/h-level EMU, hunting occurs when the EMU crosses from Line B to Line A. Numerous tests and simulations have been conducted to investigate the mechanism of this phenomenon. Comparisons of the measured rail profiles of the two lines indicate that the left rail in Line A is higher than that in Line B at the inner rail shoulder. In addition, the top position of the right rail in Line A is approximately 2–3 mm closer to the inside than that of the right rail in Line B, with the right rail in Line A being higher than that in Line B at the inner rail shoulder. These differences cause a significant increase in the wheel–rail equivalent conicity when the EMU crosses from Line B to Line A and further cause the hunting phenomenon. Moreover, simulations and experiments are conducted to investigate the countermeasures for EMU cross-line hunting. Field test results show that both increasing the damping of the yaw damper and wheel reprofiling can improve the stability during EMU cross-line operation; however, the effect of increasing the damping of the yaw damper is limited under particularly poor wheel–rail relationship. Simulation results reveal that rail grinding of Line A referring to the Chinese 60N rail profile can also improve the stability of the EMU during cross-line operation.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Hunting motion of high-speed emu during cross-line operation: Mechanism and countermeasures


    Beteiligte:
    Spiryagin, Maksym (Autor:in) / Stichel, Sebastian (Autor:in) / Bruni, Stefano (Autor:in) / Yang, Zhen-huan (Autor:in) / Wei, Lai (Autor:in) / Gan, Feng (Autor:in) / Li, Da-di (Autor:in) / Dai, Huan-yun (Autor:in)


    Erscheinungsdatum :

    2024-04-01




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    Hunting motion of high speed tracked vehicles.

    Jafar Shaghaghi, Keumarce | DSpace@MIT | 1965

    Freier Zugriff

    Countermeasures for Astronaut Entry Motion Sickness During Water Landings

    Lonner, Taylor L. / Allred, Aaron / Gopinath, Aadhit R. et al. | IEEE | 2024


    Noise generation mechanism of cross-bar tires and its countermeasures

    Watanabe, T. / Tomita, N. / Kishinami, S. et al. | Tema Archiv | 1987


    An Experimental Investigation of Potential Causes for Car-Body Hunting Motion of High-Speed Train

    Ding, Xin / Chang, Chao / Li, Yongsheng et al. | Springer Verlag | 2022


    Perceptual countermeasures to speed related accidents

    Godley, S. T. / Fildes, B. N. / Triggs, T. J. et al. | British Library Conference Proceedings | 1997