A PHENOMENOLOGICAL INTERNAL VARIABLE MODELING OF HIGH-STRAIN-RATE COLD DEFORMATION OF FCC METALS
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Revista Interdisciplinar de Pesquisa em Engenharia |
Texto Completo: | https://periodicos.unb.br/index.php/ripe/article/view/14416 |
Resumo: | Abstract. In this work a macroscopic viscoplastic model, accounting for strain, strain rate hardening and instantaneous rate sensitivity of FCC metals, is formulated. Within the present approach, a single phenomenological internal variable representing an effective microstructural feature is introduced. In a phenomenological way, this internal variable is related to hardening mechanisms associated with large strain processes. Aiming at applying the constitutive proposal in solving engineering problems, associated numerical formulation is also described. Reasoning on the numerical context, an exponential implicit integration scheme is adopted together with an elastic predictor-plastic corrector algorithm. Constitutive capabilities are assessed by solving simple numerical problems involving high-strain-rate deformation. Simulation results and comparisons with experimental data available in the literature, considering an annealed high purity copper, demonstrate the model aptitude in predicting strain rate history effects on material response. In general, proposed model proves to be a useful modeling alternative to describe the macroscopic behavior of FCC metals subjected to high-strain-rate cold deformation.Keywords: High strain rate effects, Finite strains, Viscoplasticity, Numerical algorithms |
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Revista Interdisciplinar de Pesquisa em Engenharia |
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A PHENOMENOLOGICAL INTERNAL VARIABLE MODELING OF HIGH-STRAIN-RATE COLD DEFORMATION OF FCC METALSAbstract. In this work a macroscopic viscoplastic model, accounting for strain, strain rate hardening and instantaneous rate sensitivity of FCC metals, is formulated. Within the present approach, a single phenomenological internal variable representing an effective microstructural feature is introduced. In a phenomenological way, this internal variable is related to hardening mechanisms associated with large strain processes. Aiming at applying the constitutive proposal in solving engineering problems, associated numerical formulation is also described. Reasoning on the numerical context, an exponential implicit integration scheme is adopted together with an elastic predictor-plastic corrector algorithm. Constitutive capabilities are assessed by solving simple numerical problems involving high-strain-rate deformation. Simulation results and comparisons with experimental data available in the literature, considering an annealed high purity copper, demonstrate the model aptitude in predicting strain rate history effects on material response. In general, proposed model proves to be a useful modeling alternative to describe the macroscopic behavior of FCC metals subjected to high-strain-rate cold deformation.Keywords: High strain rate effects, Finite strains, Viscoplasticity, Numerical algorithmsPrograma de Pós-Graduação em Integridade de Materiais da Engenharia2017-08-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.unb.br/index.php/ripe/article/view/1441610.26512/ripe.v2i33.14416Revista Interdisciplinar de Pesquisa em Engenharia; Vol. 2 No. 33 (2016): COMPUTATIONAL MODELING OF CANCER AND COMPUTATIONAL PLASTICITY MONOTONIC AND CYCLIC APPLICATIONSRevista Interdisciplinar de Pesquisa em Engenharia; v. 2 n. 33 (2016): COMPUTATIONAL MODELING OF CANCER AND COMPUTATIONAL PLASTICITY MONOTONIC AND CYCLIC APPLICATIONS2447-6102reponame:Revista Interdisciplinar de Pesquisa em Engenhariainstname:Universidade de Brasília (UnB)instacron:UNBporhttps://periodicos.unb.br/index.php/ripe/article/view/14416/12727dos Santos, TiagoRossi, RodrigoA. R. Rosa, PedroMaghous, Samirinfo:eu-repo/semantics/openAccess2019-05-23T18:04:06Zoai:ojs.pkp.sfu.ca:article/14416Revistahttps://periodicos.unb.br/index.php/ripePUBhttps://periodicos.unb.br/index.php/ripe/oaianflor@unb.br2447-61022447-6102opendoar:2019-05-23T18:04:06Revista Interdisciplinar de Pesquisa em Engenharia - Universidade de Brasília (UnB)false |
dc.title.none.fl_str_mv |
A PHENOMENOLOGICAL INTERNAL VARIABLE MODELING OF HIGH-STRAIN-RATE COLD DEFORMATION OF FCC METALS |
title |
A PHENOMENOLOGICAL INTERNAL VARIABLE MODELING OF HIGH-STRAIN-RATE COLD DEFORMATION OF FCC METALS |
spellingShingle |
A PHENOMENOLOGICAL INTERNAL VARIABLE MODELING OF HIGH-STRAIN-RATE COLD DEFORMATION OF FCC METALS dos Santos, Tiago |
title_short |
A PHENOMENOLOGICAL INTERNAL VARIABLE MODELING OF HIGH-STRAIN-RATE COLD DEFORMATION OF FCC METALS |
title_full |
A PHENOMENOLOGICAL INTERNAL VARIABLE MODELING OF HIGH-STRAIN-RATE COLD DEFORMATION OF FCC METALS |
title_fullStr |
A PHENOMENOLOGICAL INTERNAL VARIABLE MODELING OF HIGH-STRAIN-RATE COLD DEFORMATION OF FCC METALS |
title_full_unstemmed |
A PHENOMENOLOGICAL INTERNAL VARIABLE MODELING OF HIGH-STRAIN-RATE COLD DEFORMATION OF FCC METALS |
title_sort |
A PHENOMENOLOGICAL INTERNAL VARIABLE MODELING OF HIGH-STRAIN-RATE COLD DEFORMATION OF FCC METALS |
author |
dos Santos, Tiago |
author_facet |
dos Santos, Tiago Rossi, Rodrigo A. R. Rosa, Pedro Maghous, Samir |
author_role |
author |
author2 |
Rossi, Rodrigo A. R. Rosa, Pedro Maghous, Samir |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
dos Santos, Tiago Rossi, Rodrigo A. R. Rosa, Pedro Maghous, Samir |
description |
Abstract. In this work a macroscopic viscoplastic model, accounting for strain, strain rate hardening and instantaneous rate sensitivity of FCC metals, is formulated. Within the present approach, a single phenomenological internal variable representing an effective microstructural feature is introduced. In a phenomenological way, this internal variable is related to hardening mechanisms associated with large strain processes. Aiming at applying the constitutive proposal in solving engineering problems, associated numerical formulation is also described. Reasoning on the numerical context, an exponential implicit integration scheme is adopted together with an elastic predictor-plastic corrector algorithm. Constitutive capabilities are assessed by solving simple numerical problems involving high-strain-rate deformation. Simulation results and comparisons with experimental data available in the literature, considering an annealed high purity copper, demonstrate the model aptitude in predicting strain rate history effects on material response. In general, proposed model proves to be a useful modeling alternative to describe the macroscopic behavior of FCC metals subjected to high-strain-rate cold deformation.Keywords: High strain rate effects, Finite strains, Viscoplasticity, Numerical algorithms |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-08-07 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://periodicos.unb.br/index.php/ripe/article/view/14416 10.26512/ripe.v2i33.14416 |
url |
https://periodicos.unb.br/index.php/ripe/article/view/14416 |
identifier_str_mv |
10.26512/ripe.v2i33.14416 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://periodicos.unb.br/index.php/ripe/article/view/14416/12727 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Programa de Pós-Graduação em Integridade de Materiais da Engenharia |
publisher.none.fl_str_mv |
Programa de Pós-Graduação em Integridade de Materiais da Engenharia |
dc.source.none.fl_str_mv |
Revista Interdisciplinar de Pesquisa em Engenharia; Vol. 2 No. 33 (2016): COMPUTATIONAL MODELING OF CANCER AND COMPUTATIONAL PLASTICITY MONOTONIC AND CYCLIC APPLICATIONS Revista Interdisciplinar de Pesquisa em Engenharia; v. 2 n. 33 (2016): COMPUTATIONAL MODELING OF CANCER AND COMPUTATIONAL PLASTICITY MONOTONIC AND CYCLIC APPLICATIONS 2447-6102 reponame:Revista Interdisciplinar de Pesquisa em Engenharia instname:Universidade de Brasília (UnB) instacron:UNB |
instname_str |
Universidade de Brasília (UnB) |
instacron_str |
UNB |
institution |
UNB |
reponame_str |
Revista Interdisciplinar de Pesquisa em Engenharia |
collection |
Revista Interdisciplinar de Pesquisa em Engenharia |
repository.name.fl_str_mv |
Revista Interdisciplinar de Pesquisa em Engenharia - Universidade de Brasília (UnB) |
repository.mail.fl_str_mv |
anflor@unb.br |
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1798315224736989184 |