Predicting the dynamic behavior of train collisions using similitude theory is a valuable design tool. However, several limitations and difficulties persist when designing a similar train model. This study proposes a mechanical equivalence similitude method when a train crashes into a rigid obstacle longitudinally, which can be used to establish similitude laws and predict the dynamic responses of a full-scale high-speed train middle vehicle. This method includes impact force equivalence (IFE) and finite-element stiffness equivalence (FESE). The aim is to overcome the insufficient accuracy of establishing a similar train model using traditional similitude methods. First, the similitude laws of the end energy absorber and the vehicle body were deduced. Subsequently, the 1/8th equivalent similar middle vehicle model of the high-speed train was established. The IFE method was employed to design a 1/8th equivalent similar model of the end energy absorber. Based on the FESE method, a 1/8th equivalent similar model of the middle vehicle body was built. Finally, the accuracy and effectiveness of a similar train model were validated through numerical simulations and tests. Comparing the results of the prototype, the errors of the dynamic responses were less than 4%, indicating that the mechanical response equivalence similitude method is effective for constructing a similar train model.


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    Titel :

    A mechanical equivalence similitude method for dynamic responses of high-speed train middle vehicles in a collision


    Beteiligte:
    Lu, Sisi (Autor:in) / Wang, Pan (Autor:in) / Ni, Weitao (Autor:in) / Yan, Kaibo (Autor:in) / Chen, Zhaowei (Autor:in)


    Erscheinungsdatum :

    2023-08-01


    Format / Umfang :

    12 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




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