Title
A Finite Element Thermomechanical Analysis of Polygonal Wear
Author
He, C. (TU Delft Railway Engineering)
Yang, Z. (TU Delft Railway Engineering)
Zhang, P. (TU Delft Railway Engineering) 
Li, S. (TU Delft Railway Engineering)
Naeimi, M. (TU Delft Railway Engineering)
Li, Z. (TU Delft Railway Engineering)
Contributor
Orlova, Anna (editor)
Cole, David (editor)
Date
2022
Abstract
Polygonal wear is a common type of damage on the railway wheel tread, which could induce wheel-rail impacts and further components failure. This study presents a finite element (FE) thermomechanical model to investigate the causes of wheel polygonal wear. The FE model is able to cope with three possible causes of polygonal wear: thermal effect, initial defects, and structural dynamics. To analyse the influences of the three causes on wheel-rail contact stress and wear depth, different material properties (i.e., elastic, elasto-plastic, thermo-elasto-plastic with thermal softening), and wheel profiles (i.e., round and polygonal) were used in the FE model. The simulation indicates that a high temperature up to 264.20 ℃ could be induced by full-slip wheel-rail rolling contact when the polygonal profile is used. The thermal effect, similar to that induced by tread brake, may then have a significant influence on wheel-rail contact stress and wear depth. In addition, the involvement of initial defects, i.e., polygonal profile, causes wheel-rail impact contact and remarkably increases the contact stress and wear. By reliably considering all the three possible causes, the proposed FE model is believed promising for further explaining the generation mechanisms of wheel polygonal wear.
Subject
Finite element model
Initial defects
Polygonal wear
Thermal effect
To reference this document use:
http://resolver.tudelft.nl/uuid:1866962d-4162-405f-a161-122bb9bd8900
DOI
https://doi.org/10.1007/978-3-031-07305-2_53
Publisher
Springer
Embargo date
2023-07-01
ISBN
9783031073045
Source
Advances in Dynamics of Vehicles on Roads and Tracks II - Proceedings of the 27th Symposium of the International Association of Vehicle System Dynamics, IAVSD 2021
Event
27th Symposium of the International Association of Vehicle System Dynamics, IAVSD 2021, 2021-08-17 → 2021-08-19, Virtual, Online
Series
Lecture Notes in Mechanical Engineering, 2195-4356
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
conference paper
Rights
© 2022 C. He, Z. Yang, P. Zhang, S. Li, M. Naeimi, Z. Li