A Time-Domain Model for Coupled Vertical and Tangential Wheel/Rail Interaction - A Contribution to the Modelling of Curve Squeal

  • A. Pieringer
  • W. Kropp
Part of the Notes on Numerical Fluid Mechanics and Multidisciplinary Design book series (NNFM, volume 118)


Lateral forces due to frictional instability are seen as the main reason for the occurrence of curve squeal. Predicting squeal requires thus to describe the high-frequency wheel/rail interaction during curving including the coupling between vertical and lateral directions. In this article, a time-domain approach is presented which includes both vertical and lateral forces and takes into account the non-linear processes in the contact zone. Track and wheel are described as linear systems using pre-calculated impulse response functions. The non-linear, non-steady state contact model is based on an influence function method for the elastic half-space, includes a velocity-dependent friction coefficient and accounts for surface roughness. First results from the interaction model demonstrate the functioning of the approach.


Couple Vertical Vibration Mitigation Lateral Creepage Frictional Instability Influence Function Method 
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Copyright information

© Springer 2012

Authors and Affiliations

  • A. Pieringer
    • 1
  • W. Kropp
    • 1
  1. 1.CHARMEC/Applied AcousticsChalmers University of TechnologyGöteborgSweden

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