New Methodology to Estimate Costs Caused by Rail Wear and RCF Depending on the Type of Running Gear

Conference paper
Part of the Lecture Notes in Mechanical Engineering book series (LNME)


A new methodology to estimate costs for wear and Rolling Contact Fatigue (RCF) on rails that cause a major portion of track maintenance costs is presented. It is demonstrated for a standard UIC-Y25 bogie and a FR8RAIL bogie, a softer and cross-braced iteration of the former. The rail profile evolution and the surface-initiated fatigue on the rail surface for different track radii with progressive tonnage are calculated using multi-body simulations. ‘Fastrip’ is used to calculate tangential stresses on the contact patch. Various non-linearities in the vehicle and track models have been considered, based on running conditions on the Swedish Iron-ore line. A cyclic rail grinding procedure at fixed tonnage intervals based on recommendations from EN13231-5 is implemented, to also account for the effect of track maintenance on the rate of rail surface damage. The wear depths (W), worn cross-sectional areas (A) and the number of axle passes that carry a risk for RCF initiation (\(N_r\)) are presented and discussed for 100 Mega Gross Tonnes passage. In doing so, the methodology addresses ‘track-friendliness’ of the running gear considering both its design and the track maintenance strategies.


Track-friendliness Rail wear and RCF Cyclic grinding Rail profile evolution Running gear 


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© Springer Nature Switzerland AG 2020

Authors and Affiliations

  1. 1.KTH Royal Institute of TechnologyStockholmSweden

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