On the plastic constraint factor of polymers

Autores
Lach, Ralf; Frontini, Patricia Maria; Grellmann, Wolfgang
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The plastic constraint factor based on Hill´s theory of plasticity is widely used to check the stress state applying the essential-work-of-fracture (EWF) approach to polymers. However, the plastic constraint factor experimentally determined as the ratio of the net section stress in cracked specimens and the yield stress does not match the theoretical predictions of the theory of plasticity because assuming ideal-plastic behaviour for polymer materials does not consider material-specific viscoelastic?viscoplastic effects adequately. Therefore, a correction term for amorphous thermoplastic polymer materials is derived introducing the influence of the material on the plastic constraint factor. This correction term is based on the Williams-Landel-Ferry (WLF) equation for different thermodynamic quantities such as temperature and stress (negative pressure) and the introduction of a glass stress to be comparable to the glass temperature. Analytical calculation of this correction term, taking polycarbonate as an example, is used as a comparison to empirical values in literature for numerous amorphous and semi-crystalline thermoplastic as well as partial-plastically deformable elastomeric polymer materials. It can be concluded that this enhanced Hill´s theory is well suited to amorphous polymers.
Fil: Lach, Ralf. Polymer Service GMBH Merseburg; Alemania
Fil: Frontini, Patricia Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina
Fil: Grellmann, Wolfgang. Polymer Service GMBH Merseburg; Alemania
Materia
Essential-Work-Of-Fracture Approach
Hill’S Theory of Plasticity
Plastic Constraint Factor
Viscoelastic–Viscoplastic Effects
Williams-Landel-Ferry Equation
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:11336/31808
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/31808
network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling On the plastic constraint factor of polymersLach, RalfFrontini, Patricia MariaGrellmann, WolfgangEssential-Work-Of-Fracture ApproachHill’S Theory of PlasticityPlastic Constraint FactorViscoelastic–Viscoplastic EffectsWilliams-Landel-Ferry Equationhttps://purl.org/becyt/ford/2.5https://purl.org/becyt/ford/2The plastic constraint factor based on Hill´s theory of plasticity is widely used to check the stress state applying the essential-work-of-fracture (EWF) approach to polymers. However, the plastic constraint factor experimentally determined as the ratio of the net section stress in cracked specimens and the yield stress does not match the theoretical predictions of the theory of plasticity because assuming ideal-plastic behaviour for polymer materials does not consider material-specific viscoelastic?viscoplastic effects adequately. Therefore, a correction term for amorphous thermoplastic polymer materials is derived introducing the influence of the material on the plastic constraint factor. This correction term is based on the Williams-Landel-Ferry (WLF) equation for different thermodynamic quantities such as temperature and stress (negative pressure) and the introduction of a glass stress to be comparable to the glass temperature. Analytical calculation of this correction term, taking polycarbonate as an example, is used as a comparison to empirical values in literature for numerous amorphous and semi-crystalline thermoplastic as well as partial-plastically deformable elastomeric polymer materials. It can be concluded that this enhanced Hill´s theory is well suited to amorphous polymers.Fil: Lach, Ralf. Polymer Service GMBH Merseburg; AlemaniaFil: Frontini, Patricia Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; ArgentinaFil: Grellmann, Wolfgang. Polymer Service GMBH Merseburg; AlemaniaWiley2017-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/31808Grellmann, Wolfgang; Frontini, Patricia Maria; Lach, Ralf; On the plastic constraint factor of polymers; Wiley; Macromolecular Symposia; 373; 1; 6-2017; 16001171022-1360CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1002/masy.201600117info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1002/masy.201600117/abstract;jsessionid=CF781A292A75DAA66A21CB6916717F09.f04t03info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2026-06-04T11:13:35Zoai:ri.conicet.gov.ar:11336/31808instacron: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:34982026-06-04 11:13:35.454CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv On the plastic constraint factor of polymers
title On the plastic constraint factor of polymers
spellingShingle On the plastic constraint factor of polymers
Lach, Ralf
Essential-Work-Of-Fracture Approach
Hill’S Theory of Plasticity
Plastic Constraint Factor
Viscoelastic–Viscoplastic Effects
Williams-Landel-Ferry Equation
title_short On the plastic constraint factor of polymers
title_full On the plastic constraint factor of polymers
title_fullStr On the plastic constraint factor of polymers
title_full_unstemmed On the plastic constraint factor of polymers
title_sort On the plastic constraint factor of polymers
dc.creator.none.fl_str_mv Lach, Ralf
Frontini, Patricia Maria
Grellmann, Wolfgang
author Lach, Ralf
author_facet Lach, Ralf
Frontini, Patricia Maria
Grellmann, Wolfgang
author_role author
author2 Frontini, Patricia Maria
Grellmann, Wolfgang
author2_role author
author
dc.subject.none.fl_str_mv Essential-Work-Of-Fracture Approach
Hill’S Theory of Plasticity
Plastic Constraint Factor
Viscoelastic–Viscoplastic Effects
Williams-Landel-Ferry Equation
topic Essential-Work-Of-Fracture Approach
Hill’S Theory of Plasticity
Plastic Constraint Factor
Viscoelastic–Viscoplastic Effects
Williams-Landel-Ferry Equation
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.5
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv The plastic constraint factor based on Hill´s theory of plasticity is widely used to check the stress state applying the essential-work-of-fracture (EWF) approach to polymers. However, the plastic constraint factor experimentally determined as the ratio of the net section stress in cracked specimens and the yield stress does not match the theoretical predictions of the theory of plasticity because assuming ideal-plastic behaviour for polymer materials does not consider material-specific viscoelastic?viscoplastic effects adequately. Therefore, a correction term for amorphous thermoplastic polymer materials is derived introducing the influence of the material on the plastic constraint factor. This correction term is based on the Williams-Landel-Ferry (WLF) equation for different thermodynamic quantities such as temperature and stress (negative pressure) and the introduction of a glass stress to be comparable to the glass temperature. Analytical calculation of this correction term, taking polycarbonate as an example, is used as a comparison to empirical values in literature for numerous amorphous and semi-crystalline thermoplastic as well as partial-plastically deformable elastomeric polymer materials. It can be concluded that this enhanced Hill´s theory is well suited to amorphous polymers.
Fil: Lach, Ralf. Polymer Service GMBH Merseburg; Alemania
Fil: Frontini, Patricia Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina
Fil: Grellmann, Wolfgang. Polymer Service GMBH Merseburg; Alemania
description The plastic constraint factor based on Hill´s theory of plasticity is widely used to check the stress state applying the essential-work-of-fracture (EWF) approach to polymers. However, the plastic constraint factor experimentally determined as the ratio of the net section stress in cracked specimens and the yield stress does not match the theoretical predictions of the theory of plasticity because assuming ideal-plastic behaviour for polymer materials does not consider material-specific viscoelastic?viscoplastic effects adequately. Therefore, a correction term for amorphous thermoplastic polymer materials is derived introducing the influence of the material on the plastic constraint factor. This correction term is based on the Williams-Landel-Ferry (WLF) equation for different thermodynamic quantities such as temperature and stress (negative pressure) and the introduction of a glass stress to be comparable to the glass temperature. Analytical calculation of this correction term, taking polycarbonate as an example, is used as a comparison to empirical values in literature for numerous amorphous and semi-crystalline thermoplastic as well as partial-plastically deformable elastomeric polymer materials. It can be concluded that this enhanced Hill´s theory is well suited to amorphous polymers.
publishDate 2017
dc.date.none.fl_str_mv 2017-06
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/11336/31808
Grellmann, Wolfgang; Frontini, Patricia Maria; Lach, Ralf; On the plastic constraint factor of polymers; Wiley; Macromolecular Symposia; 373; 1; 6-2017; 1600117
1022-1360
CONICET Digital
CONICET
url http://hdl.handle.net/11336/31808
identifier_str_mv Grellmann, Wolfgang; Frontini, Patricia Maria; Lach, Ralf; On the plastic constraint factor of polymers; Wiley; Macromolecular Symposia; 373; 1; 6-2017; 1600117
1022-1360
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1002/masy.201600117
info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1002/masy.201600117/abstract;jsessionid=CF781A292A75DAA66A21CB6916717F09.f04t03
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
dc.publisher.none.fl_str_mv Wiley
publisher.none.fl_str_mv Wiley
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 12.832306

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