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Tolerable longitudinal forces for freight trains in tight S-curves using three-dimensional multi-body simulations
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering. (Spårfordon)ORCID iD: 0000-0002-4477-971x
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering.ORCID iD: 0000-0002-2571-4662
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering. KTH, School of Engineering Sciences (SCI), Centres, The KTH Railway Group.ORCID iD: 0000-0002-8237-5847
2019 (English)In: Proceedings of the Institution of mechanical engineers. Part F, journal of rail and rapid transit, ISSN 0954-4097, E-ISSN 2041-3017Article in journal (Refereed) Published
Abstract [en]

With the need for increasing length of freight trains, Longitudinal Train Dynamics (LTD) and its influence on the running safety becomes a key issue. LTD is a complex issue with contributions from both the vehicles and the operating conditions such as infrastructure design, braking regimes, etc. Standards such as the UIC Code 530-2 and EN-15839 detail the procedure for on-track propelling tests that should be conducted to determine the running safety of a single wagon. Also, it only considers a single S-curve and specifies neighbouring wagons and buffers. The resulting LTD would hence not be able to judge the effects of various heterogeneities in the train formation such as the adjacent wagons, buffer types, carbody torsional stiffnesses, curvatures, etc. Here, there is a potential of using three-dimensional multi-body simulations to develop a methodology to judge the running safety of a train with regards to its longitudinal dynamic behaviour, subjected to various heterogeneities. A tool based on three-dimensional multi-body simulations has been developed to provide Longitudinal Compressive Force (LCF) limits, tolerable LCF for wagon combinations passing through S-curves of varying curvatures and assess the sensitivities of the various heterogeneities present in the train. The methodology is applied to open wagons of the ‘Falns’ type on tight S-curves by calculating the corresponding tolerable LCF and the effect of various parameters on the same is discussed.

Place, publisher, year, edition, pages
Sage Publications, 2019.
Keywords [en]
S-curve; longitudinal train dynamics; freight wagons; longitudinal compressive forces; multi-body simulation; tolerable force; derailment.
National Category
Vehicle Engineering
Research subject
Järnvägsgruppen - Fordonsteknik
Identifiers
URN: urn:nbn:se:kth:diva-250776DOI: 10.1177/0954409719841794Scopus ID: 2-s2.0-85064678218OAI: oai:DiVA.org:kth-250776DiVA, id: diva2:1313723
Funder
EU, Horizon 2020, 730811
Note

QC 20190520

Available from: 2019-05-06 Created: 2019-05-06 Last updated: 2019-09-21

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Krishna, Visakh VBerg, MatsStichel, Sebastian

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Krishna, Visakh VBerg, MatsStichel, Sebastian
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Aeronautical and Vehicle EngineeringThe KTH Railway Group
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Proceedings of the Institution of mechanical engineers. Part F, journal of rail and rapid transit
Vehicle Engineering

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