Based on the exactly solution for the wheel/rail contact point and the contact force, a vehicle/rail coupling model for analyzing dynamic derailment is developed in MATLAB as DDSHV (Dynamic Derailment Simulation for High-speed Vehicle). The calculation process of the simulation system is presented in detail, and the best solution conditions are also discussed to quickly obtain results. Two common types of dynamic derailment are studied in DDSHV. There exists a critical point in the process of wheel climb, and the dynamic weakening effect will promote the wheel-climbing rail. Meanwhile, some main factors, such as the speed, the rail condition and the wheel unload rate, have been studied on the dynamic weakening effect. The collision speed of the wheelset is the most important factor affecting impact derailment. As time becomes shorter, the collision can be investigated using LS-DYNA. The results confirm the equation for the critical impact speed used in this paper. DDSHV can also be used to find the vehicle running stability. Through the design of uplink and downlink algorithms, two critical running speeds, the critical speed and the nonlinear critical speed have been found. Yet, the changes in suspension parameters will directly influence these critical speeds. Therefore, an accurate configuration in vehicle will help to reduce the disturbances while an inaccurate configuration may lead to an incident. Although it is dangerous and difficult to make a derailment online test, the effectiveness of DDSHV has been verified by the known dynamic cases and lab tests. In conclusion, DDSHV has assisted in understanding the process of derailment, finding the important factors affecting derailment and exploring the mechanism of dynamic derailment.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Development of high-speed railway vehicle derailment simulation - Part II: Exploring the derailment mechanism


    Beteiligte:
    Wang, Wei (Autor:in) / Li, Gui-xian (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    2012


    Format / Umfang :

    19 Seiten, 23 Bilder, 16 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch




    Derailment Analysis of High-Speed Railway Vehicle Bogies

    Cheng, Y.C. / Chen, C.H. / Yang, C.J. | British Library Conference Proceedings | 2012


    Anti-derailment device and active anti-derailment system of railway vehicle

    YUAN XUANCHENG / SHEN LONGJIANG / JIANG ZHONGCHENG et al. | Europäisches Patentamt | 2024

    Freier Zugriff

    Railway vehicle derailment return device

    Europäisches Patentamt | 2023

    Freier Zugriff

    Railway vehicle derailment return device

    AHN HWANG JAE | Europäisches Patentamt | 2021

    Freier Zugriff

    Railway vehicle derailment return device

    AHN HWANG JAE | Europäisches Patentamt | 2022

    Freier Zugriff