Project detail

Squeal noise generation in the wheel-rail contact with modified friction

Duration: 29.01.2020 — 31.12.2022

Funding resources

Czech Science Foundation - Standardní projekty

- whole funder (2020-02-27 - 2022-01-29)

On the project

The aim of this project is to provide extended explanation of occurrence of the wheel squeal noise in contact enhanced with the TOR products, especially in region of positive or constant slope of the friction coefficient. Investigation of this phenomenon will provide new essential information for extending current theory of occurrence of the wheel/rail squeal in curves for contacts enhanced with TOR products. The parameters which significantly affects efficiency of the applied friction modifiers will be focused. Identification of such parameters will be made both by simulation and laboratory experiments.

curve squeal, railway noise, friction modification, falling friction



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People responsible

Galas Radovan, Ing., Ph.D. - fellow researcher
Křupka Ivan, prof. Ing., Ph.D. - fellow researcher
Kvarda Daniel, Ing., Ph.D. - fellow researcher
Navrátil Václav, Ing. - fellow researcher
Valena Martin, Ing. - fellow researcher
Klapka Milan, doc. Ing., Ph.D. - principal person responsible


Institute of Machine and Industrial Design
- (2019-03-22 - not assigned)


KVARDA, D.; GALAS, R.; OMASTA, M.; SHI, L.B.; DING, H.H; WANG, W.J.; KŘUPKA, I.; HARTL, M.;. Asperity-based model for prediction of traction in water-contaminated wheel-rail contact. Tribology International, 2021, vol. 157, no. 5, p. 106900-106910. ISSN: 0301-679X.

OMASTA, M.; NAVRÁTIL, V.; GALAS, R.; KLAPKA, M. Design of the twin-disc test rig for the study of wheel squeal noise. 10th International Conference on Tribology – BALKANTRIB '20 PROCEEDINGS. Belgrade: University of Belgrade, Faculty of Mechanical Engineering, 2021. ISBN: 978-86-6060-073-0.

OMASTA, M.; NAVRÁTIL, V.; GABRIEL, T.; GALAS, R.; KLAPKA, M. Design and development of a twin disc test rig for the study of squeal noise from the wheel – rail interface. Applied Engineering Letters, 2022, vol. 7, no. 1, p. 10-16. ISSN: 2466-4677.

LI, Q.; ZHANG, S.; WU, B.; LIN, Q.; DING, H.H.; GALAS, R.; KVARDA, D.; OMASTA, M.; WANG, W.; WEN, Z. Analysis on the effect of starved elastohydrodynamic lubrication on the adhesion behavior and fatigue index of wheel-rail contact. WEAR, 2022, vol. 510-511, no. 1, ISSN: 0043-1648.

NAVRÁTIL, V. Experimental verification of twin-disc test rig for wheel squeal noise research. 2022.

NAVRÁTIL, V.; GALAS, R.; KLAPKA, M.; KVARDA, D.; OMASTA, M.; SHI, L.; DING, H.; WANG, W.; KŘUPKA, I.; HARTL, M. Wheel Squeal Noise in Rail Transport: The Effect of Friction Modifier Composition. Tribology in Industry, 2022, vol. 44, no. 3, p. 361-373. ISSN: 0354-8996.