Practical Tool for the Prediction of Plastic Flow in Railway Curves

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper investigates the wheel-rail contact forces and stress distributions that lead to lateral plastic flow of material in the railhead. A 250 m radius curve is taken as an example with rail profiles measured over an 8 month period. Vehicle dynamics simulations have been carried out to investigate how the wheel-rail contact forces change over time, as the rail profile evolves. The calculated forces have then been applied to a Finite Element Analysis (FEA) to investigate plastic work and cumulative strain within the rail. The work presented in this paper is part of a larger project which has the aim of developing a simple analytical approach for predicting rates of plastic flow based on calculated wheel-rail contact forces (without the need for computationally intensive FEA analysis). Vehicle speed on curves (and therefore cant excess/deficiency) appears to have a significant effect on rates of Effective Plastic Work (EPW) as does contact size and shape. Work is ongoing to continue investigating parameters that affect rates of lateral plastic flow and to develop a 'plastic work damage index'; building on a previous study [1].

Original languageEnglish
Title of host publicationProceedings of the 11th International Conference on Contact Mechanics and Wear of Rail/wheel Systems
EditorsAlfredo Nunez, Zili Li
PublisherTU Delft
Pages374-381
Number of pages8
ISBN (Print)9461869630, 9789461869630
Publication statusPublished - 27 Sep 2018
Event11th International Conference on Contact Mechanics and Wear of Rail/Wheel Systems - Delft, Netherlands
Duration: 24 Sep 201827 Sep 2018
Conference number: 11
https://cm2018.org/

Conference

Conference11th International Conference on Contact Mechanics and Wear of Rail/Wheel Systems
Abbreviated titleCM 2018
CountryNetherlands
CityDelft
Period24/09/1827/09/18
Internet address

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  • Cite this

    Hawksbee, S. J., Tucker, G. J., & Burstow, M. (2018). Practical Tool for the Prediction of Plastic Flow in Railway Curves. In A. Nunez, & Z. Li (Eds.), Proceedings of the 11th International Conference on Contact Mechanics and Wear of Rail/wheel Systems (pp. 374-381). TU Delft.