In this research, an empty freight wagon with Y25 bogies have been modelled. Non-linear creep forces with spin moment between wheel and rail have been used, and also all impacts and friction forces have been modelled. Non-linear equations of motion and kinematical constraints have been solved in time domain, and limit cycles, saddle nodes, and critical speeds have been shown. Both primary and secondary hunting can be seen in the responses of the wagons. The relation between frequency of oscillations and speed can be seen, also, there are chaotic oscillations. Results show that stiffness in impacts affects calculation time and limit cycles.


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    Title :

    Critical speed and limit cycles in the empty Y25-freight wagon


    Contributors:
    Molatefi, H (author) / Hecht, M (author) / Kadivar, M H (author)


    Publication date :

    2006-07-01


    Size :

    13 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Critical speed and limit cycles in the empty Y25-freight wagon

    Molatefi, H. / Hecht, M. / Kadivar, M. H. | British Library Online Contents | 2006




    Development of freight wagon

    Andersson, Evert / Jönsson, Per-Ander | IuD Bahn | 2005


    Modelling freight wagon dynamics

    McClanachan, M. / Handoko, Y. / Dhanasekar, M. et al. | Tema Archive | 2004