Publication detail

Shear properties of top-of-rail products in numerical modelling

KVARDA, D. GALAS, R. OMASTA, M. KŘUPKA, I. HARTL, M. DZIMKO, M.

English title

Shear properties of top-of-rail products in numerical modelling

Type

journal article in Web of Science

Language

en

Original abstract

Top-of-rail product assessment in terms of frictional properties plays a key role in the evaluation of desired benefits for wheel-rail contact. In this study, a high-pressure torsion device is used to study the friction-displacement properties of three types of top-of-rail products. The effects of applied amount and increased temperature were investigated. All tested products were very sensitive to the amount applied. For the water-based substance, the evaporation of water created a solid-like film that provided very low friction. The increase in temperature lowered the coefficient of friction for dry contact but had a negligible effect on the applied products. A FASTSIM-based numerical model is used to demonstrate the application of these results.

English abstract

Top-of-rail product assessment in terms of frictional properties plays a key role in the evaluation of desired benefits for wheel-rail contact. In this study, a high-pressure torsion device is used to study the friction-displacement properties of three types of top-of-rail products. The effects of applied amount and increased temperature were investigated. All tested products were very sensitive to the amount applied. For the water-based substance, the evaporation of water created a solid-like film that provided very low friction. The increase in temperature lowered the coefficient of friction for dry contact but had a negligible effect on the applied products. A FASTSIM-based numerical model is used to demonstrate the application of these results.

Keywords in English

Adhesion coefficient; top-of-rail product; friction; rail-wheel tribology; adhesion model

Released

01.07.2023

Publisher

SAGE PUBLICATIONS LTD

Location

London, United Kingdom

ISSN

0954-4097

Volume

237

Number

6

Pages from–to

796–805

Pages count

10

BIBTEX


@article{BUT179957,
  author="Daniel {Kvarda} and Radovan {Galas} and Milan {Omasta} and Ivan {Křupka} and Martin {Hartl} and Marián {Dzimko},
  title="Shear properties of top-of-rail products in numerical modelling",
  year="2023",
  volume="237",
  number="6",
  month="July",
  pages="796--805",
  publisher="SAGE PUBLICATIONS LTD",
  address="London, United Kingdom",
  issn="0954-4097"
}