Dynamic train-track interaction at high vehicle speeds-Modelling of wheelset dynamics and wheel rotation
Journal article, 2011

Vertical dynamic train-track interaction at high vehicle speeds is investigated in a frequency range from about 20 Hz to 2.5 kHz. The inertial effects due to wheel rotation are accounted for in the vehicle model by implementing a structural dynamics model of a rotating wheelset. Calculated wheel-rail contact forces using the flexible, rotating wheelset model are compared with contact forces based on rigid, non-rotating models. For a validation of the train-track interaction model, calculated contact forces are compared with contact forces measured using an instrumented wheelset. When the system is excited at a frequency where two different wheelset mode shapes, due to the wheel rotation, have coinciding resonance frequencies, significant differences are found in the contact forces calculated with the rotating and non-rotating wheelset models. Further, the use of a flexible, rotating wheelset model is recommended for load cases leading to large magnitude contact force components in the high-frequency range (above 1.5 kHz). In particular, the influence of the radial wheel eigenmodes with two or three nodal diameters is significant. (C) 2011 Elsevier Ltd. All rights reserved.

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rail contact forces



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Peter T Torstensson


Jens Nielsen


Luis Baeza

Polytechnic University of Valencia (UPV)

Journal of Sound and Vibration

0022-460X (ISSN) 1095-8568 (eISSN)

Vol. 330 22 5309-5321

Subject Categories

Mechanical Engineering



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