Theoretical approach including friction for determining strain limits in punch stretching of anisotropic sheet metals
Autor(a) principal: | |
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Data de Publicação: | 2010 |
Outros Autores: | , |
Tipo de documento: | Artigo de conferência |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1063/1.3552485 http://hdl.handle.net/11449/72006 |
Resumo: | A new analytical theory including friction was developed to assess strain limits in punch stretching of anisotropic sheet metals. This new approach takes into consideration the anisotropic behaviour of sheet materials and could explain the mechanical behaviour of a variety of anisotropic sheet materials. The theory explains the sheet metal failure so for the drawing as the stretching region of the forming limit curve, particularly for materials that present the strain-ratio dependence of limit strain ε 1, where dε 1/dρ is not always greater than zero. dε 1/ dρ or dε 1/dε 2 could be equal to or smaller than zero for a range of materials. Therefore, this new theory can explains such experimental observations, besides to assuming that membrane element relations near the pole, for the case of punch stretching are dependent of sheet metal properties as the process history and also suggests that the onset of local necking is controlled by shear. Thus, theoretical results obtained through this new approach are compared with experimental results available in the literature. It is demonstrated the effect of friction on a FLC curve for both regions, drawing and stretching. © 2010 American Institute of Physics. |
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Theoretical approach including friction for determining strain limits in punch stretching of anisotropic sheet metalsanisotropyplastic instability and frictionpunch stretchingSheet metal formingstrain limitsA new analytical theory including friction was developed to assess strain limits in punch stretching of anisotropic sheet metals. This new approach takes into consideration the anisotropic behaviour of sheet materials and could explain the mechanical behaviour of a variety of anisotropic sheet materials. The theory explains the sheet metal failure so for the drawing as the stretching region of the forming limit curve, particularly for materials that present the strain-ratio dependence of limit strain ε 1, where dε 1/dρ is not always greater than zero. dε 1/ dρ or dε 1/dε 2 could be equal to or smaller than zero for a range of materials. Therefore, this new theory can explains such experimental observations, besides to assuming that membrane element relations near the pole, for the case of punch stretching are dependent of sheet metal properties as the process history and also suggests that the onset of local necking is controlled by shear. Thus, theoretical results obtained through this new approach are compared with experimental results available in the literature. It is demonstrated the effect of friction on a FLC curve for both regions, drawing and stretching. © 2010 American Institute of Physics.ITA Aeronautical Technological Institute IEM, Praça Mal. Eduardo Gomes, 50, Vila das Acácias-S.J.Campos, CEP 12228-900UNESP São Paulo State University Ilha Solteira Campus, DEM, Av. Brasil, 56, - Centro, Ilha Solteira, CEP 15385-000UNESP São Paulo State University Ilha Solteira Campus, DEM, Av. Brasil, 56, - Centro, Ilha Solteira, CEP 15385-000IEMUniversidade Estadual Paulista (Unesp)De Souza, L. H BMenezes, M. A. [UNESP]Filho, L. A. Moreira2014-05-27T11:24:51Z2014-05-27T11:24:51Z2010-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObject443-448application/pdfhttp://dx.doi.org/10.1063/1.3552485AIP Conference Proceedings, v. 1315, p. 443-448.0094-243X1551-7616http://hdl.handle.net/11449/7200610.1063/1.35524852-s2.0-799525686292-s2.0-79952568629.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengAIP Conference Proceedingsinfo:eu-repo/semantics/openAccess2023-11-14T06:12:20Zoai:repositorio.unesp.br:11449/72006Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-11-14T06:12:20Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Theoretical approach including friction for determining strain limits in punch stretching of anisotropic sheet metals |
title |
Theoretical approach including friction for determining strain limits in punch stretching of anisotropic sheet metals |
spellingShingle |
Theoretical approach including friction for determining strain limits in punch stretching of anisotropic sheet metals De Souza, L. H B anisotropy plastic instability and friction punch stretching Sheet metal forming strain limits |
title_short |
Theoretical approach including friction for determining strain limits in punch stretching of anisotropic sheet metals |
title_full |
Theoretical approach including friction for determining strain limits in punch stretching of anisotropic sheet metals |
title_fullStr |
Theoretical approach including friction for determining strain limits in punch stretching of anisotropic sheet metals |
title_full_unstemmed |
Theoretical approach including friction for determining strain limits in punch stretching of anisotropic sheet metals |
title_sort |
Theoretical approach including friction for determining strain limits in punch stretching of anisotropic sheet metals |
author |
De Souza, L. H B |
author_facet |
De Souza, L. H B Menezes, M. A. [UNESP] Filho, L. A. Moreira |
author_role |
author |
author2 |
Menezes, M. A. [UNESP] Filho, L. A. Moreira |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
IEM Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
De Souza, L. H B Menezes, M. A. [UNESP] Filho, L. A. Moreira |
dc.subject.por.fl_str_mv |
anisotropy plastic instability and friction punch stretching Sheet metal forming strain limits |
topic |
anisotropy plastic instability and friction punch stretching Sheet metal forming strain limits |
description |
A new analytical theory including friction was developed to assess strain limits in punch stretching of anisotropic sheet metals. This new approach takes into consideration the anisotropic behaviour of sheet materials and could explain the mechanical behaviour of a variety of anisotropic sheet materials. The theory explains the sheet metal failure so for the drawing as the stretching region of the forming limit curve, particularly for materials that present the strain-ratio dependence of limit strain ε 1, where dε 1/dρ is not always greater than zero. dε 1/ dρ or dε 1/dε 2 could be equal to or smaller than zero for a range of materials. Therefore, this new theory can explains such experimental observations, besides to assuming that membrane element relations near the pole, for the case of punch stretching are dependent of sheet metal properties as the process history and also suggests that the onset of local necking is controlled by shear. Thus, theoretical results obtained through this new approach are compared with experimental results available in the literature. It is demonstrated the effect of friction on a FLC curve for both regions, drawing and stretching. © 2010 American Institute of Physics. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-12-01 2014-05-27T11:24:51Z 2014-05-27T11:24:51Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/conferenceObject |
format |
conferenceObject |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1063/1.3552485 AIP Conference Proceedings, v. 1315, p. 443-448. 0094-243X 1551-7616 http://hdl.handle.net/11449/72006 10.1063/1.3552485 2-s2.0-79952568629 2-s2.0-79952568629.pdf |
url |
http://dx.doi.org/10.1063/1.3552485 http://hdl.handle.net/11449/72006 |
identifier_str_mv |
AIP Conference Proceedings, v. 1315, p. 443-448. 0094-243X 1551-7616 10.1063/1.3552485 2-s2.0-79952568629 2-s2.0-79952568629.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
AIP Conference Proceedings |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
443-448 application/pdf |
dc.source.none.fl_str_mv |
Scopus 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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1797789704290041856 |