Application of Fastsim with variable coefficient of friction using twin disc experimental measurements

In the field of railway simulation, it is a general assumption to consider the coefficient of friction as a known and constant value. This hypothesis is clearly not correct as friction is a consequence of the operating conditions (an output, not an input) and many factors can cause friction coeffici...

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Autores: Rovira, Andres|||0000-0001-8192-5571, Roda Buch, Alejandro, Lewis, R., Marshall, M.B.
Tipo de recurso: artículo
Fecha de publicación:2012
País:España
Institución:Universitat Politècnica de València (UPV)
Repositorio:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
Idioma:inglés
OAI Identifier:oai:riunet.upv.es:10251/50028
Acceso en línea:https://riunet.upv.es/handle/10251/50028
Access Level:acceso abierto
Palabra clave:Rail-wheel tribology
Contact mechanics
Rolling-sliding
Creep forces
Slip-dependent friction
Wear modelling
INGENIERIA MECANICA
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spelling Application of Fastsim with variable coefficient of friction using twin disc experimental measurementsRovira, Andres|||0000-0001-8192-5571Roda Buch, AlejandroLewis, R.Marshall, M.B.Rail-wheel tribologyContact mechanicsRolling-slidingCreep forcesSlip-dependent frictionWear modellingINGENIERIA MECANICAIn the field of railway simulation, it is a general assumption to consider the coefficient of friction as a known and constant value. This hypothesis is clearly not correct as friction is a consequence of the operating conditions (an output, not an input) and many factors can cause friction coefficient to change. In this paper, numerical algorithms based on the simplified theory of Kalker (Fastsim) and capable of modelling variable friction are studied and improved to match experimental measurements. Experimental creep curves from twin disc measurements are used to extract the friction parameters required by the numerical algorithms. Different friction functions are tested to correlate the effect of the contaminants and the pressure on the coefficient of friction. Finally, two examples are shown to highlight the differences between modelling the wheel–rail contact with variable or constant coefficient of friction and their implications in the estimation of the interaction forces and wear.This research was supported by Universitat Politecnica de Valencia (Spain).ElsevierEscuela Técnica Superior de Ingeniería Aeroespacial y Diseño IndustrialDepartamento de Ingeniería Mecánica y de MaterialesInstituto Universitario de Investigación Concertado de Ingeniería Mecánica y BiomecánicaUniversitat Politècnica de ValènciaRepositorio Institucional de la Universitat Politècnica de València Riunet20122012-01-27journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfapplication/pdfhttps://riunet.upv.es/handle/10251/50028reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valénciainstname:Universitat Politècnica de València (UPV)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Reserva de todos los derechoshttp://rightsstatements.org/vocab/InC/1.0/info:eu-repo/semantics/openAccessoai:riunet.upv.es:10251/500282026-06-13T07:49:27Z
dc.title.none.fl_str_mv Application of Fastsim with variable coefficient of friction using twin disc experimental measurements
title Application of Fastsim with variable coefficient of friction using twin disc experimental measurements
spellingShingle Application of Fastsim with variable coefficient of friction using twin disc experimental measurements
Rovira, Andres|||0000-0001-8192-5571
Rail-wheel tribology
Contact mechanics
Rolling-sliding
Creep forces
Slip-dependent friction
Wear modelling
INGENIERIA MECANICA
title_short Application of Fastsim with variable coefficient of friction using twin disc experimental measurements
title_full Application of Fastsim with variable coefficient of friction using twin disc experimental measurements
title_fullStr Application of Fastsim with variable coefficient of friction using twin disc experimental measurements
title_full_unstemmed Application of Fastsim with variable coefficient of friction using twin disc experimental measurements
title_sort Application of Fastsim with variable coefficient of friction using twin disc experimental measurements
dc.creator.none.fl_str_mv Rovira, Andres|||0000-0001-8192-5571
Roda Buch, Alejandro
Lewis, R.
Marshall, M.B.
author Rovira, Andres|||0000-0001-8192-5571
author_facet Rovira, Andres|||0000-0001-8192-5571
Roda Buch, Alejandro
Lewis, R.
Marshall, M.B.
author_role author
author2 Roda Buch, Alejandro
Lewis, R.
Marshall, M.B.
author2_role author
author
author
dc.contributor.none.fl_str_mv Escuela Técnica Superior de Ingeniería Aeroespacial y Diseño Industrial
Departamento de Ingeniería Mecánica y de Materiales
Instituto Universitario de Investigación Concertado de Ingeniería Mecánica y Biomecánica
Universitat Politècnica de València
Repositorio Institucional de la Universitat Politècnica de València Riunet
dc.subject.none.fl_str_mv Rail-wheel tribology
Contact mechanics
Rolling-sliding
Creep forces
Slip-dependent friction
Wear modelling
INGENIERIA MECANICA
topic Rail-wheel tribology
Contact mechanics
Rolling-sliding
Creep forces
Slip-dependent friction
Wear modelling
INGENIERIA MECANICA
description In the field of railway simulation, it is a general assumption to consider the coefficient of friction as a known and constant value. This hypothesis is clearly not correct as friction is a consequence of the operating conditions (an output, not an input) and many factors can cause friction coefficient to change. In this paper, numerical algorithms based on the simplified theory of Kalker (Fastsim) and capable of modelling variable friction are studied and improved to match experimental measurements. Experimental creep curves from twin disc measurements are used to extract the friction parameters required by the numerical algorithms. Different friction functions are tested to correlate the effect of the contaminants and the pressure on the coefficient of friction. Finally, two examples are shown to highlight the differences between modelling the wheel–rail contact with variable or constant coefficient of friction and their implications in the estimation of the interaction forces and wear.
publishDate 2012
dc.date.none.fl_str_mv 2012
2012-01-27
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://riunet.upv.es/handle/10251/50028
url https://riunet.upv.es/handle/10251/50028
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Reserva de todos los derechos
http://rightsstatements.org/vocab/InC/1.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Reserva de todos los derechos
http://rightsstatements.org/vocab/InC/1.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
instname:Universitat Politècnica de València (UPV)
instname_str Universitat Politècnica de València (UPV)
reponame_str RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
collection RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.300719

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