A numerical and analytical study of the stress field generated by the contact between a rail and a wheel

Detalhes bibliográficos
Autor(a) principal: Kohn, Andre Oliveira [UNESP]
Data de Publicação: 2020
Outros Autores: Silva, Fernando de Azevedo [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1007/s42452-020-3044-1
http://hdl.handle.net/11449/197828
Resumo: This article presents a study of the contact stresses between a rail and a wheel, in order to understand the mechanism related to this application. When two bodies, regardless of their forms, touch each other due to an external load, both suffer a slight deformation on the contact surface, creating a stress field in this area, and the complete comprehension of this phenomenon is fundamental to calculate critical stresses and to prevent possible failures. This article approaches this topic in two different manners: one analytical, using Hertz equations; and another numerical, using the FEM software Ansys. The results obtained from both approaches are compared, and the model can be validated. The results show that when these two cylindrical bodies are pressed against each other, a small rectangular area is created, and the highest normal stresses are found exactly where the two elements touch. It is seen that the maximum shear stress is found along the depth of the body and is the most critical for the appearance of cracks. The results from this work are in good alignment with reality and they can be used to predict possible failures and behaviors in real applications.
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spelling A numerical and analytical study of the stress field generated by the contact between a rail and a wheelHertz contact stressesDeformationCylinderplane contactWheelrail contactFEM modelThis article presents a study of the contact stresses between a rail and a wheel, in order to understand the mechanism related to this application. When two bodies, regardless of their forms, touch each other due to an external load, both suffer a slight deformation on the contact surface, creating a stress field in this area, and the complete comprehension of this phenomenon is fundamental to calculate critical stresses and to prevent possible failures. This article approaches this topic in two different manners: one analytical, using Hertz equations; and another numerical, using the FEM software Ansys. The results obtained from both approaches are compared, and the model can be validated. The results show that when these two cylindrical bodies are pressed against each other, a small rectangular area is created, and the highest normal stresses are found exactly where the two elements touch. It is seen that the maximum shear stress is found along the depth of the body and is the most critical for the appearance of cracks. The results from this work are in good alignment with reality and they can be used to predict possible failures and behaviors in real applications.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Sao Paulo State Univ, UNESP, Guaratingueta Sch Engn, Ave Dr Ariberto Pereira da Cunha 333, BR-12516410 Guaratingueta, SP, BrazilSao Paulo State Univ, UNESP, Guaratingueta Sch Engn, Ave Dr Ariberto Pereira da Cunha 333, BR-12516410 Guaratingueta, SP, BrazilCAPES: 001SpringerUniversidade Estadual Paulista (Unesp)Kohn, Andre Oliveira [UNESP]Silva, Fernando de Azevedo [UNESP]2020-12-11T20:53:22Z2020-12-11T20:53:22Z2020-06-19info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article8http://dx.doi.org/10.1007/s42452-020-3044-1Sn Applied Sciences. Cham: Springer International Publishing Ag, v. 2, n. 7, 8 p., 2020.2523-3963http://hdl.handle.net/11449/19782810.1007/s42452-020-3044-1WOS:000543372600006Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengSn Applied Sciencesinfo:eu-repo/semantics/openAccess2024-07-01T20:32:29Zoai:repositorio.unesp.br:11449/197828Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T14:39:45.294530Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv A numerical and analytical study of the stress field generated by the contact between a rail and a wheel
title A numerical and analytical study of the stress field generated by the contact between a rail and a wheel
spellingShingle A numerical and analytical study of the stress field generated by the contact between a rail and a wheel
Kohn, Andre Oliveira [UNESP]
Hertz contact stresses
Deformation
Cylinder
plane contact
Wheel
rail contact
FEM model
title_short A numerical and analytical study of the stress field generated by the contact between a rail and a wheel
title_full A numerical and analytical study of the stress field generated by the contact between a rail and a wheel
title_fullStr A numerical and analytical study of the stress field generated by the contact between a rail and a wheel
title_full_unstemmed A numerical and analytical study of the stress field generated by the contact between a rail and a wheel
title_sort A numerical and analytical study of the stress field generated by the contact between a rail and a wheel
author Kohn, Andre Oliveira [UNESP]
author_facet Kohn, Andre Oliveira [UNESP]
Silva, Fernando de Azevedo [UNESP]
author_role author
author2 Silva, Fernando de Azevedo [UNESP]
author2_role author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Kohn, Andre Oliveira [UNESP]
Silva, Fernando de Azevedo [UNESP]
dc.subject.por.fl_str_mv Hertz contact stresses
Deformation
Cylinder
plane contact
Wheel
rail contact
FEM model
topic Hertz contact stresses
Deformation
Cylinder
plane contact
Wheel
rail contact
FEM model
description This article presents a study of the contact stresses between a rail and a wheel, in order to understand the mechanism related to this application. When two bodies, regardless of their forms, touch each other due to an external load, both suffer a slight deformation on the contact surface, creating a stress field in this area, and the complete comprehension of this phenomenon is fundamental to calculate critical stresses and to prevent possible failures. This article approaches this topic in two different manners: one analytical, using Hertz equations; and another numerical, using the FEM software Ansys. The results obtained from both approaches are compared, and the model can be validated. The results show that when these two cylindrical bodies are pressed against each other, a small rectangular area is created, and the highest normal stresses are found exactly where the two elements touch. It is seen that the maximum shear stress is found along the depth of the body and is the most critical for the appearance of cracks. The results from this work are in good alignment with reality and they can be used to predict possible failures and behaviors in real applications.
publishDate 2020
dc.date.none.fl_str_mv 2020-12-11T20:53:22Z
2020-12-11T20:53:22Z
2020-06-19
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1007/s42452-020-3044-1
Sn Applied Sciences. Cham: Springer International Publishing Ag, v. 2, n. 7, 8 p., 2020.
2523-3963
http://hdl.handle.net/11449/197828
10.1007/s42452-020-3044-1
WOS:000543372600006
url http://dx.doi.org/10.1007/s42452-020-3044-1
http://hdl.handle.net/11449/197828
identifier_str_mv Sn Applied Sciences. Cham: Springer International Publishing Ag, v. 2, n. 7, 8 p., 2020.
2523-3963
10.1007/s42452-020-3044-1
WOS:000543372600006
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Sn Applied Sciences
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 8
dc.publisher.none.fl_str_mv Springer
publisher.none.fl_str_mv Springer
dc.source.none.fl_str_mv Web of Science
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
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