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This paper is focused on the vehicle dynamics caused by the forces exchanged,\udthrough buffers and draw gears, by consecutive vehicles on a curve. The results have\udbeen obtained by adding a buffers/draw gears contact model on an existing\udmultibody code, previously developed by the authors. The multibody code manages\udrigid bodies connected by elastic and rigid constraints; the wheel/rail contact model\udis three dimensional and employs an elastic constraint among wheel and rail. The\udwheel/rail contact is managed by means of a numerical model called TOAM (third\udorder approximation method). Numerical tests and experimental validations of the\udproposed model are here presented, considering a train made by three vehicles,\udrunning on an S shaped curve, subjected to parametric compressive forces

The Train Dynamics of Wheel Rail Contact and Longitudinal Lateral Interaction between Vehicles