| Issue |
MATEC Web Conf.
Volume 262, 2019
64 Scientific Conference of the Committee for Civil Engineering of the Polish Academy of Sciences and the Science Committee of the Polish Association of Civil Engineers (PZITB) (KRYNICA 2018)
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|
|---|---|---|
| Article Number | 11003 | |
| Number of page(s) | 4 | |
| Section | Railway Engineering | |
| DOI | https://doi.org/10.1051/matecconf/201926211003 | |
| Published online | 30 January 2019 | |
Effect of vertical imperfections on longitudinal railway track response
Cracow University of Technology, Faculty of Civil Engineering, 31-155 Kraków, Poland
* Corresponding author: czyczula@pk.edu.pl
The paper presents an analysis of linear models track response under longitudinal loads due to braking and accelerating of the train as well as constant traction forces. Longitudinal forces on the wheel-rail contacts are uniformly distributed on the whole length of train. Analysis is carried out under assumption that – in short time – train speed does not change significantly. Therefore stationary response of rail track is considered. The problem of critical speed is presented. Effect of vertical imperfections on the longitudinal rail displacement is considered under assumption that longitudinal forces varying in time are changed proportionally to the vertical forces. These forces are proportional to the amplitude of vertical imperfections. This analysis should be recognised as the main novelty of the paper. In the summary, certain practical conclusions are formulated as well as the further investigations are pointed out.
© The Authors, published by EDP Sciences, 2019
This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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