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.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

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


    Contributors:
    Lu, Sisi (author) / Wang, Pan (author) / Ni, Weitao (author) / Yan, Kaibo (author) / Chen, Zhaowei (author)


    Publication date :

    2023-08-01


    Size :

    12 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Similitude scaled method for three-dimensional train collision

    Li, Jialin / Gao, Guangjun / Yu, Yao et al. | SAGE Publications | 2023



    Whole train dynamic and stability in high speed collision

    Lupton, Jim / Bound, Sturat M. | IuD Bahn | 2006


    Mechanical similitude and turbulence

    Von Ka´ / rma´ / n, T. | Engineering Index Backfile | 1931


    Mechanical similitude and turbulence

    Kármán, Th. | TIBKAT | 1931