Publication detail

Asperity-based model for prediction of traction in water-contaminated wheel-rail contact

KVARDA, D. GALAS, R. OMASTA, M. SHI, L.B. DING, H.H WANG, W.J. KŘUPKA, I. HARTL, M.

Original Title

Asperity-based model for prediction of traction in water-contaminated wheel-rail contact

Type

journal article in Web of Science

Language

English

Original Abstract

The wheel-rail contact is subjected to various environmental contaminations, while one of the most common is water. A numerical model has been used to evaluate friction in water-contaminated contact. The Greenwood and Tripp theory is used to calculate the load carried by asperities and liquid film. This model uses Kalker's simplified theory with an implemented third body layer to determine the frictional values of asperity contact and elastohydrodynamic theory for friction generated by liquid. The results are compared with experiments on two types of surface roughness. The results show the difference between elastic and plastic asperity deformation model, where the plastic model predicts more accurate transition in mixed lubrication regime. The plastic deformation model was used to predict traction curves.

Keywords

Adhesion coefficient; Water; Low adhesion; Rail–wheel tribology

Authors

KVARDA, D.; GALAS, R.; OMASTA, M.; SHI, L.B.; DING, H.H; WANG, W.J.; KŘUPKA, I.; HARTL, M.;

Released

1. 5. 2021

Publisher

Elsevier

Location

Nizozemsko

ISBN

0301-679X

Periodical

Tribology International

Year of study

157

Number

5

State

United Kingdom of Great Britain and Northern Ireland

Pages from

106900

Pages to

106910

Pages count

11

URL

https://www.sciencedirect.com/science/article/pii/S0301679X21000487

BibTex

@article{BUT171618,
  author="KVARDA, D. and GALAS, R. and OMASTA, M. and SHI, L.B. and DING, H.H and WANG, W.J. and KŘUPKA, I. and HARTL, M.",
  title="Asperity-based model for prediction of traction in water-contaminated wheel-rail contact",
  journal="Tribology International",
  year="2021",
  volume="157",
  number="5",
  pages="106900--106910",
  doi="10.1016/j.triboint.2021.106900",
  issn="0301-679X",
  url="https://www.sciencedirect.com/science/article/pii/S0301679X21000487"
}