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New Methodology to Estimate Costs Caused by Rail Wear and RCF Depending on the Type of Running Gear
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering. (Spårfordon)ORCID iD: 0000-0002-4477-971x
KTH, School of Engineering Sciences (SCI), Centres, The KTH Railway Group. KTH, School of Engineering Sciences (SCI), Centres, VinnExcellence Center for ECO2 Vehicle design. KTH, Superseded Departments (pre-2005), Vehicle Engineering. KTH, School of Engineering Sciences (SCI), Engineering Mechanics, Vehicle Engineering and Solid Mechanics.ORCID iD: 0000-0002-8237-5847
2020 (English)In: IAVSD 2019: Advances in Dynamics of Vehicles on Roads and Tracks / [ed] Matthijs Klomp, Fredrik Bruzelius, Jens Nielsen and Angela Hillemyr, 2020Conference paper, Published paper (Refereed)
Abstract [en]

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 (Nr) 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.

Place, publisher, year, edition, pages
2020.
Series
Lecture Notes in Mechanical Engineering, ISSN 2195-4356, E-ISSN 2195-4364
Keywords [en]
Track-friendliness, Rail wear and RCF, Cyclic grinding, Rail profile evolution, Running gear
National Category
Mechanical Engineering
Research subject
Vehicle and Maritime Engineering; Järnvägsgruppen - Fordonsteknik
Identifiers
URN: urn:nbn:se:kth:diva-267717DOI: 10.1007/978-3-030-38077-9_84Scopus ID: 2-s2.0-85081624466ISBN: 978-3-030-38076-2 (print)ISBN: 978-3-030-38077-9 (electronic)OAI: oai:DiVA.org:kth-267717DiVA, id: diva2:1393054
Conference
The IAVSD International Symposium on Dynamics of Vehicles on Roads and Tracks
Projects
FR8RAIL (Grant no. 730617)
Funder
EU, Horizon 2020, 730617Available from: 2020-02-14 Created: 2020-02-14 Last updated: 2020-05-11

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Krishna, Visakh VHossein Nia, SaeedStichel, Sebastian

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Krishna, Visakh VHossein Nia, SaeedStichel, Sebastian
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Aeronautical and Vehicle EngineeringThe KTH Railway GroupVinnExcellence Center for ECO2 Vehicle designVehicle EngineeringVehicle Engineering and Solid Mechanics
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