Numerical simulation of the lubricant performance

Autores
Luege, Mariela; Luccioni, Bibiana Maria
Año de publicación
2008
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Due to the high pressures that are involved in tube hydroforming processes, high values of the friction forces are developed and, therefore, lubricants are usually employed to increase the formability of the workpiece. However, different lubrication regimes are observed along the different forming zones which vary with the lubricant layer thickness, applied load and sliding velocity. A constitutive relation that captures these features of tribology between two surfaces separated by an atomically thin layer of lubricant molecules is proposed in this paper. The model defines the tangential stress as sum of two contributions: one purely frictional and the other one of viscous type. The frictional contribution depends on the contact between the asperities, whereas the viscous contribution is described by means of an effective viscosity coefficient that accounts for the thin lubricant layer separating such asperities. The model is implemented in a FE code and validated with a pear-shape expansion test. Comparisons with the Coulomb's law are also presented showing a better performance of the proposed model.
Fil: Luege, Mariela. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Instituto de Estructuras "Ing. Arturo M. Guzmán"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; Argentina
Fil: Luccioni, Bibiana Maria. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Instituto de Estructuras "Ing. Arturo M. Guzmán"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; Argentina
Materia
Hydroforming Process
Lubrication
Friction Law
Computational Friction Mechanics
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/81657
Acceder
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Numerical simulation of the lubricant performanceLuege, MarielaLuccioni, Bibiana MariaHydroforming ProcessLubricationFriction LawComputational Friction Mechanicshttps://purl.org/becyt/ford/2.3https://purl.org/becyt/ford/2Due to the high pressures that are involved in tube hydroforming processes, high values of the friction forces are developed and, therefore, lubricants are usually employed to increase the formability of the workpiece. However, different lubrication regimes are observed along the different forming zones which vary with the lubricant layer thickness, applied load and sliding velocity. A constitutive relation that captures these features of tribology between two surfaces separated by an atomically thin layer of lubricant molecules is proposed in this paper. The model defines the tangential stress as sum of two contributions: one purely frictional and the other one of viscous type. The frictional contribution depends on the contact between the asperities, whereas the viscous contribution is described by means of an effective viscosity coefficient that accounts for the thin lubricant layer separating such asperities. The model is implemented in a FE code and validated with a pear-shape expansion test. Comparisons with the Coulomb's law are also presented showing a better performance of the proposed model.Fil: Luege, Mariela. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Instituto de Estructuras "Ing. Arturo M. Guzmán"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; ArgentinaFil: Luccioni, Bibiana Maria. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Instituto de Estructuras "Ing. Arturo M. Guzmán"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; ArgentinaElsevier Science Sa2008-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/81657Luege, Mariela; Luccioni, Bibiana Maria; Numerical simulation of the lubricant performance; Elsevier Science Sa; Journal Of Materials Processing Technology; 172; 3; 3-2008; 372-3800924-0136CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.jmatprotec.2007.07.040info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0924013607006930?via%3Dihubinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:49:40Zoai:ri.conicet.gov.ar:11336/81657instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 09:49:40.713CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Numerical simulation of the lubricant performance
title Numerical simulation of the lubricant performance
spellingShingle Numerical simulation of the lubricant performance
Luege, Mariela
Hydroforming Process
Lubrication
Friction Law
Computational Friction Mechanics
title_short Numerical simulation of the lubricant performance
title_full Numerical simulation of the lubricant performance
title_fullStr Numerical simulation of the lubricant performance
title_full_unstemmed Numerical simulation of the lubricant performance
title_sort Numerical simulation of the lubricant performance
dc.creator.none.fl_str_mv Luege, Mariela
Luccioni, Bibiana Maria
author Luege, Mariela
author_facet Luege, Mariela
Luccioni, Bibiana Maria
author_role author
author2 Luccioni, Bibiana Maria
author2_role author
dc.subject.none.fl_str_mv Hydroforming Process
Lubrication
Friction Law
Computational Friction Mechanics
topic Hydroforming Process
Lubrication
Friction Law
Computational Friction Mechanics
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.3
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Due to the high pressures that are involved in tube hydroforming processes, high values of the friction forces are developed and, therefore, lubricants are usually employed to increase the formability of the workpiece. However, different lubrication regimes are observed along the different forming zones which vary with the lubricant layer thickness, applied load and sliding velocity. A constitutive relation that captures these features of tribology between two surfaces separated by an atomically thin layer of lubricant molecules is proposed in this paper. The model defines the tangential stress as sum of two contributions: one purely frictional and the other one of viscous type. The frictional contribution depends on the contact between the asperities, whereas the viscous contribution is described by means of an effective viscosity coefficient that accounts for the thin lubricant layer separating such asperities. The model is implemented in a FE code and validated with a pear-shape expansion test. Comparisons with the Coulomb's law are also presented showing a better performance of the proposed model.
Fil: Luege, Mariela. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Instituto de Estructuras "Ing. Arturo M. Guzmán"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; Argentina
Fil: Luccioni, Bibiana Maria. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Instituto de Estructuras "Ing. Arturo M. Guzmán"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; Argentina
description Due to the high pressures that are involved in tube hydroforming processes, high values of the friction forces are developed and, therefore, lubricants are usually employed to increase the formability of the workpiece. However, different lubrication regimes are observed along the different forming zones which vary with the lubricant layer thickness, applied load and sliding velocity. A constitutive relation that captures these features of tribology between two surfaces separated by an atomically thin layer of lubricant molecules is proposed in this paper. The model defines the tangential stress as sum of two contributions: one purely frictional and the other one of viscous type. The frictional contribution depends on the contact between the asperities, whereas the viscous contribution is described by means of an effective viscosity coefficient that accounts for the thin lubricant layer separating such asperities. The model is implemented in a FE code and validated with a pear-shape expansion test. Comparisons with the Coulomb's law are also presented showing a better performance of the proposed model.
publishDate 2008
dc.date.none.fl_str_mv 2008-03
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/81657
Luege, Mariela; Luccioni, Bibiana Maria; Numerical simulation of the lubricant performance; Elsevier Science Sa; Journal Of Materials Processing Technology; 172; 3; 3-2008; 372-380
0924-0136
CONICET Digital
CONICET
url http://hdl.handle.net/11336/81657
identifier_str_mv Luege, Mariela; Luccioni, Bibiana Maria; Numerical simulation of the lubricant performance; Elsevier Science Sa; Journal Of Materials Processing Technology; 172; 3; 3-2008; 372-380
0924-0136
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jmatprotec.2007.07.040
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0924013607006930?via%3Dihub
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science Sa
publisher.none.fl_str_mv Elsevier Science Sa
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.13397

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