One of the main limitations of algorithms relating forces and creepages at the wheel/rail contact is the use of a friction coefficient independent of the slip. This paper overcomes this limitation through a modification of the FastSim algorithm (based on the Simplified Theory of Kalker). A friction law based on the local value of the slip is established and the required formulation of the local slip elsewhere in the contact area is presented. Some difficulties of the method and the solutions adopted by the authors are also presented. Finally, the achieved improvements are shown through comparison of the results obtained both with the original and the modified FastSim algorithms.


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    Title :

    Introduction of a friction coefficient dependent on the slip in the FastSim algorithm


    Contributors:
    Giménez, JG (author) / Alonso, A (author) / Gómez *, E (author)

    Published in:

    Vehicle System Dynamics ; 43 , 4 ; 233-244


    Publication date :

    2005-04-01


    Size :

    12 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    Unknown