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A fast non-elliptic contact model for application to rail vehicle dynamics simulation
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering.
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering.
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering.
2014 (English)Conference paper (Refereed)Text
Abstract [en]

An approximate rolling contact model is introduced for fast evaluation of the contact patch and stress distribution in the wheel-rail interface, capable of being used on-line with dynamics simulations. The normal part of the model is based on a novel approach in which the surface deformations are approximated, resulting in accurate patch and pressure estimation. The tangential part is based on an adaptation of the FASTSIM algorithm to non-elliptic patches. The new model is compared to the approximate model of Kik and Piotrowski and the results are evaluated using the rigorous solution of Kalker's CONTACT code. The comparison clearly shows the new model to be more accurate than Kik-Piotrowski's in terms of contact patch and stress distribution as well as creep force estimation.

Place, publisher, year, edition, pages
Civil-Comp Press , 2014. Vol. 104
Keyword [en]
ANALYN, Non-elliptic rolling contact, Rail vehicle dynamics, Virtual penetration, Wear, Wheel-rail contact, Dynamics, End effectors, Friction, Rail motor cars, Stress concentration, Wear of materials, Wheels, Rolling contacts, Wheel-rail contacts, Vehicle wheels
National Category
Mechanical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-187592ScopusID: 2-s2.0-84963734069OAI: oai:DiVA.org:kth-187592DiVA: diva2:936609
Note

QC 20160614

Available from: 2016-06-14 Created: 2016-05-25 Last updated: 2016-06-14Bibliographically approved

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Sichani, Martin Sh.Enblom, RogerBerg, Mats
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ReferencesLink to record
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