Detail publikačního výsledku

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.;

Originální název

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

Anglický název

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

Druh

Článek WoS

Originální abstrakt

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.

Anglický abstrakt

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.

Klíčová slova

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

Klíčová slova v angličtině

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

Autoři

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

Rok RIV

2021

Vydáno

01.05.2021

Nakladatel

Elsevier

Místo

Nizozemsko

ISSN

0301-679X

Periodikum

Tribology International

Svazek

157

Číslo

5

Stát

Spojené království Velké Británie a Severního Irska

Strany od

106900

Strany do

106910

Strany počet

11

URL

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

Plný text v Digitální knihovně

http://hdl.handle.net/

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"
}