Numerical simulations of fabric shields for bulletproof vest: determining the number of sheets to withstand ballistic impacts
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Latin American journal of solids and structures (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-78252020000400505 |
Resumo: | Abstract The main contribution of this research is to develop a FE model for evaluating impact loading against fabrics. Although the fabric model has been studied by some authors, this article contributes with a FE model with a new material formulation which takes into account the stress-strain limit to simulate the fabric rupture. As a case study, the author uses a bulletproof vest impact analysis and determine the number of sheets necessary to resist the ballistic impact. A sophisticated numerical algorithm is used. New constitutive equations are developed capable to take into account the material damage, yield stresses and rupture limits. This is based on elastoplasticity theory, with an adaptation of the function related to the hardening of the material. With this, it is possible to control the limits of the permissible stresses on the yarn and coating of the structural fabric and accurately represent the physical behavior of the materials used. The elastoplasticity and damage theories are developed and, finally, a numerical algorithm is presented for the determination of stresses, displacements and material deformations. |
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Latin American journal of solids and structures (Online) |
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Numerical simulations of fabric shields for bulletproof vest: determining the number of sheets to withstand ballistic impactsFabric shieldbulletproof vestballistic impactAbstract The main contribution of this research is to develop a FE model for evaluating impact loading against fabrics. Although the fabric model has been studied by some authors, this article contributes with a FE model with a new material formulation which takes into account the stress-strain limit to simulate the fabric rupture. As a case study, the author uses a bulletproof vest impact analysis and determine the number of sheets necessary to resist the ballistic impact. A sophisticated numerical algorithm is used. New constitutive equations are developed capable to take into account the material damage, yield stresses and rupture limits. This is based on elastoplasticity theory, with an adaptation of the function related to the hardening of the material. With this, it is possible to control the limits of the permissible stresses on the yarn and coating of the structural fabric and accurately represent the physical behavior of the materials used. The elastoplasticity and damage theories are developed and, finally, a numerical algorithm is presented for the determination of stresses, displacements and material deformations.Associação Brasileira de Ciências Mecânicas2020-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-78252020000400505Latin American Journal of Solids and Structures v.17 n.4 2020reponame:Latin American journal of solids and structures (Online)instname:Associação Brasileira de Engenharia e Ciências Mecânicas (ABCM)instacron:ABCM10.1590/1679-78255994info:eu-repo/semantics/openAccessBandeira,Alex Alveseng2020-06-22T00:00:00Zoai:scielo:S1679-78252020000400505Revistahttp://www.scielo.br/scielo.php?script=sci_serial&pid=1679-7825&lng=pt&nrm=isohttps://old.scielo.br/oai/scielo-oai.phpabcm@abcm.org.br||maralves@usp.br1679-78251679-7817opendoar:2020-06-22T00:00Latin American journal of solids and structures (Online) - Associação Brasileira de Engenharia e Ciências Mecânicas (ABCM)false |
dc.title.none.fl_str_mv |
Numerical simulations of fabric shields for bulletproof vest: determining the number of sheets to withstand ballistic impacts |
title |
Numerical simulations of fabric shields for bulletproof vest: determining the number of sheets to withstand ballistic impacts |
spellingShingle |
Numerical simulations of fabric shields for bulletproof vest: determining the number of sheets to withstand ballistic impacts Bandeira,Alex Alves Fabric shield bulletproof vest ballistic impact |
title_short |
Numerical simulations of fabric shields for bulletproof vest: determining the number of sheets to withstand ballistic impacts |
title_full |
Numerical simulations of fabric shields for bulletproof vest: determining the number of sheets to withstand ballistic impacts |
title_fullStr |
Numerical simulations of fabric shields for bulletproof vest: determining the number of sheets to withstand ballistic impacts |
title_full_unstemmed |
Numerical simulations of fabric shields for bulletproof vest: determining the number of sheets to withstand ballistic impacts |
title_sort |
Numerical simulations of fabric shields for bulletproof vest: determining the number of sheets to withstand ballistic impacts |
author |
Bandeira,Alex Alves |
author_facet |
Bandeira,Alex Alves |
author_role |
author |
dc.contributor.author.fl_str_mv |
Bandeira,Alex Alves |
dc.subject.por.fl_str_mv |
Fabric shield bulletproof vest ballistic impact |
topic |
Fabric shield bulletproof vest ballistic impact |
description |
Abstract The main contribution of this research is to develop a FE model for evaluating impact loading against fabrics. Although the fabric model has been studied by some authors, this article contributes with a FE model with a new material formulation which takes into account the stress-strain limit to simulate the fabric rupture. As a case study, the author uses a bulletproof vest impact analysis and determine the number of sheets necessary to resist the ballistic impact. A sophisticated numerical algorithm is used. New constitutive equations are developed capable to take into account the material damage, yield stresses and rupture limits. This is based on elastoplasticity theory, with an adaptation of the function related to the hardening of the material. With this, it is possible to control the limits of the permissible stresses on the yarn and coating of the structural fabric and accurately represent the physical behavior of the materials used. The elastoplasticity and damage theories are developed and, finally, a numerical algorithm is presented for the determination of stresses, displacements and material deformations. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-78252020000400505 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-78252020000400505 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/1679-78255994 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Associação Brasileira de Ciências Mecânicas |
publisher.none.fl_str_mv |
Associação Brasileira de Ciências Mecânicas |
dc.source.none.fl_str_mv |
Latin American Journal of Solids and Structures v.17 n.4 2020 reponame:Latin American journal of solids and structures (Online) instname:Associação Brasileira de Engenharia e Ciências Mecânicas (ABCM) instacron:ABCM |
instname_str |
Associação Brasileira de Engenharia e Ciências Mecânicas (ABCM) |
instacron_str |
ABCM |
institution |
ABCM |
reponame_str |
Latin American journal of solids and structures (Online) |
collection |
Latin American journal of solids and structures (Online) |
repository.name.fl_str_mv |
Latin American journal of solids and structures (Online) - Associação Brasileira de Engenharia e Ciências Mecânicas (ABCM) |
repository.mail.fl_str_mv |
abcm@abcm.org.br||maralves@usp.br |
_version_ |
1754302890405527552 |