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Simulation of wheel-rail contact and damage in switches & crossings
KTH, School of Architecture and the Built Environment (ABE), Transport Science, Highway and Railway Engineering. (The KTH Railway Group)
Chalmers University of technology. (Charmec)
Chalmers University of technology. (Charmec)
Chalmers University of technology. (Charmec)
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2011 (English)In: Wear, ISSN 0043-1648, E-ISSN 1873-2577, Vol. 271, no 1, 472-481 p.Article in journal (Refereed) Published
Abstract [en]

A methodology for the simulation of degradation of rail profiles in switches & crossings (S&C) is presented. The methodology includes: simulation of dynamic vehicle-track interaction considering stochastic variations in input data (such as wheel profile, train speed and wheel-rail friction coefficient), simulation of wheel-rail contacts accounting for non-linear material properties and plasticity, and simulation of wear and plastic deformation in the rail during the life of the S&C component. The methodology is demonstrated by predicting the damage of a switch rail profile, manufactured from R260 steel, when exposed to freight traffic in the diverging route (facing move). In particular, the consequences of increasing the axle load from 25 tonnes to 30 tonnes are studied.

Place, publisher, year, edition, pages
2011. Vol. 271, no 1, 472-481 p.
Keyword [en]
Switches & crossings ; Wheel–rail contact ; Wear ; Plastic deformation
National Category
Infrastructure Engineering
Research subject
Järnvägsgruppen - Infrastruktur
URN: urn:nbn:se:kth:diva-76044ISI: 000291777600056OAI: diva2:490867
8th Conference on Contact Mechanics and Wear of Rail/Wheel Systems (CM2009), Florence, ITALY, SEP, 2009 QC 20120208Available from: 2012-02-08 Created: 2012-02-06 Last updated: 2012-02-08Bibliographically approved

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Gebretsadik, Elias Kassa
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