Simulation and experiment based investigations of squat formation mechanisms

Christof Bernsteiner, Alexander Meierhofer, Gerald Trummer, Christof Marte, Stephan Scheriau, Klaus Six, Peter Dietmaier

Publikation: Beitrag in einer FachzeitschriftArtikelForschungBegutachtung

Abstract

In this work, possible formation mechanisms of squats were investigated based on field and laboratory measurements, full-scale wheel-rail test rig experiments and a newly developed simulation tool. Wheel-rail contact conditions were found, which can lead to cracks in or to outbreaks of a white etching layer (WEL) on a rail surface. Under certain condition this also can lead to cracks growing into the bulk material. Furthermore, according to the simulation results, geometrical deviations of the rail surface - as for example outbreaks of WELs - can remain at the rail surface and grow up to a size comparable to that of squats. It has been shown, that the crack initiation potential in the area of such permanent geometrical deviations can be increased.

Previous article in issue
Originalspracheenglisch
Aufsatznummer203093
Seitenumfang11
FachzeitschriftWear
Jahrgang440-441
DOIs
PublikationsstatusVeröffentlicht - 2019

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etching

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Simulation and experiment based investigations of squat formation mechanisms. / Bernsteiner, Christof; Meierhofer, Alexander; Trummer, Gerald; Marte, Christof; Scheriau, Stephan; Six, Klaus; Dietmaier, Peter.

in: Wear, Jahrgang 440-441, 203093, 2019.

Publikation: Beitrag in einer FachzeitschriftArtikelForschungBegutachtung

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AU - Meierhofer, Alexander

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AU - Scheriau, Stephan

AU - Six, Klaus

AU - Dietmaier, Peter

PY - 2019

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