Theoretical Approach Including Friction for Determining Strain Limits in Punch Stretching of Anisotropic Sheet Metals
Autor(a) principal: | |
---|---|
Data de Publicação: | 2010 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo de conferência |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://hdl.handle.net/11449/194722 |
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 epsilon(1), where d epsilon(1)/d rho is not always greater than zero. d epsilon(1)/d rho or d epsilon(1)/d epsilon(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. |
id |
UNSP_1cb8bc3b01fac6e5da22e04de15ea3e9 |
---|---|
oai_identifier_str |
oai:repositorio.unesp.br:11449/194722 |
network_acronym_str |
UNSP |
network_name_str |
Repositório Institucional da UNESP |
repository_id_str |
2946 |
spelling |
Theoretical Approach Including Friction for Determining Strain Limits in Punch Stretching of Anisotropic Sheet MetalsSheet metal formingpunch stretchingstrain limitsanisotropyplastic instability and frictionA 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 epsilon(1), where d epsilon(1)/d rho is not always greater than zero. d epsilon(1)/d rho or d epsilon(1)/d epsilon(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.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)ITA (Technological Institute of Aeronautics)UNESP (Sao Paulo State University)ITA Aeronaut Technol Inst, IEM Praca Mal Eduardo Gomes, 50 Vila das Acacias, BR-12228900 Sao Jose Dos Campos, BrazilUNESP Sao Paulo State Univ, Ilha Solteira Campus, BR-15358000 Ilha Solteira, BrazilUNESP Sao Paulo State Univ, Ilha Solteira Campus, BR-15358000 Ilha Solteira, BrazilAmer Inst PhysicsITA Aeronaut Technol InstUniversidade Estadual Paulista (Unesp)De Souza, L. H. B.Menezes, M. A. [UNESP]Moreira Filho, L. A.Chinesta, F.Chastel, Y.ElMansori, M.2020-12-10T16:35:33Z2020-12-10T16:35:33Z2010-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObject443-+International Conference On Advances In Materials And Processing Technologies, Pts One And Two. Melville: Amer Inst Physics, v. 1315, p. 443-+, 2010.0094-243Xhttp://hdl.handle.net/11449/194722WOS:000287169300073Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengInternational Conference On Advances In Materials And Processing Technologies, Pts One And Twoinfo:eu-repo/semantics/openAccess2021-10-22T20:18:46Zoai:repositorio.unesp.br:11449/194722Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-22T20:18:46Repositório 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. Sheet metal forming punch stretching strain limits anisotropy plastic instability and friction |
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] Moreira Filho, L. A. Chinesta, F. Chastel, Y. ElMansori, M. |
author_role |
author |
author2 |
Menezes, M. A. [UNESP] Moreira Filho, L. A. Chinesta, F. Chastel, Y. ElMansori, M. |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
ITA Aeronaut Technol Inst Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
De Souza, L. H. B. Menezes, M. A. [UNESP] Moreira Filho, L. A. Chinesta, F. Chastel, Y. ElMansori, M. |
dc.subject.por.fl_str_mv |
Sheet metal forming punch stretching strain limits anisotropy plastic instability and friction |
topic |
Sheet metal forming punch stretching strain limits anisotropy plastic instability and friction |
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 epsilon(1), where d epsilon(1)/d rho is not always greater than zero. d epsilon(1)/d rho or d epsilon(1)/d epsilon(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. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-01-01 2020-12-10T16:35:33Z 2020-12-10T16:35:33Z |
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 |
International Conference On Advances In Materials And Processing Technologies, Pts One And Two. Melville: Amer Inst Physics, v. 1315, p. 443-+, 2010. 0094-243X http://hdl.handle.net/11449/194722 WOS:000287169300073 |
identifier_str_mv |
International Conference On Advances In Materials And Processing Technologies, Pts One And Two. Melville: Amer Inst Physics, v. 1315, p. 443-+, 2010. 0094-243X WOS:000287169300073 |
url |
http://hdl.handle.net/11449/194722 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
International Conference On Advances In Materials And Processing Technologies, Pts One And Two |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
443-+ |
dc.publisher.none.fl_str_mv |
Amer Inst Physics |
publisher.none.fl_str_mv |
Amer Inst Physics |
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 |
|
_version_ |
1797789974293118976 |