Summary
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.
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Pieringer, A., Kropp, W. (2012). A Time-Domain Model for Coupled Vertical and Tangential Wheel/Rail Interaction - A Contribution to the Modelling of Curve Squeal. In: Maeda, T., et al. Noise and Vibration Mitigation for Rail Transportation Systems. Notes on Numerical Fluid Mechanics and Multidisciplinary Design, vol 118. Springer, Tokyo. https://doi.org/10.1007/978-4-431-53927-8_26
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DOI: https://doi.org/10.1007/978-4-431-53927-8_26
Publisher Name: Springer, Tokyo
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