This chapter discusses Hertz contact theory, wheel/rail contact formulations, and creep force models. While most of this chapter is devoted to formulating the wheel/rail contact problem, discussions of the forces used in magnetically levitated trains are also presented. In the constraint contact formulation approach, the constraint conditions must be satisfied at the position, velocity, and acceleration levels, and the normal contact force is considered a reaction force. In the elastic contact formulation approach, the algebraic equations used to solve for the surface parameters do not impose any constraints on the motion of the wheel or wheelset, and no constraint forces are associated with these equations. In the elastic contact formulation, the normal contact force is determined using a compliant force model with assumed stiffness and damping coefficients. In both the constraint and elastic contact formulations, the dimensions of the contact ellipse are determined in order to evaluate the tangential creep forces and spin moment.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Contact Problem


    Contributors:


    Publication date :

    2021-04-05


    Size :

    50 pages




    Type of media :

    Article/Chapter (Book)


    Type of material :

    Electronic Resource


    Language :

    English





    UNILATERAL CONTACT PROBLEM FOR COMPOSITE FINITE BODIES

    SIPCIC, SLOBODAN / RABINOVICH, VLADIMIR / RUGG, ROBERT | AIAA | 1993


    Analyses of Wheel/Rail Unsymmetrical Contact Problem

    Ma, Weihua / Luo, Shihui / Song, Rongrong | IEEE | 2008


    Methodology for Solving Contact Problem during Riveting Process

    Bretagnol, Bertrand / Petukhova, Margarita / Lupuleac, Sergey et al. | SAE Technical Papers | 2011