Print Email Facebook Twitter A numerical study on waves induced by wheel-rail contact Title A numerical study on waves induced by wheel-rail contact Author Yang, Z. (TU Delft Railway Engineering) Li, Z. (TU Delft Railway Engineering) Date 2019 Abstract Recent finite element (FE) simulations have revealed the generation and propagation of waves in rail surfaces induced by wheel-rail frictional rolling. These waves have rarely been addressed in the literature. This paper presents an in-depth analysis of these waves, aiming to give new insights into the contact mechanics, a research area in which waves have generally been ignored. The study first categorises the simulated contact-induced waves according to their generation mechanisms as impact-induced, creepage-induced and perturbation-induced waves. The link between the generation of perturbation-induced waves and the stick-slip contact mechanism is then explored. Next, by examining the rail surface nodal motion that forms the wave, the creepage-induced wave is demonstrated to be a Rayleigh wave; this result also shows that the explicit FE method can effectively simulate physical contact-induced waves and provide reliable dynamic contact solutions. Finally, FE modelling is presented to investigate the effects of surface cracks on the waves, which may contribute to wave-based crack detection. Subject CrackExplicit FEMRayleigh waveWaveWheel-rail contact To reference this document use: http://resolver.tudelft.nl/uuid:29a0e6be-b306-4a3b-801c-2fc5e19c9b8c DOI https://doi.org/10.1016/j.ijmecsci.2019.105069 Embargo date 2020-02-07 ISSN 0020-7403 Source International Journal of Mechanical Sciences, 161-162 Bibliographical note Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2019 Z. Yang, Z. Li Files PDF A_numerical_study_on_wave ... ontact.pdf 2.85 MB Close viewer /islandora/object/uuid:29a0e6be-b306-4a3b-801c-2fc5e19c9b8c/datastream/OBJ/view