Effect of Surface Stress on the Buckling of Nonlocal Nanoplates Subject to Material Uncertainty

Detalhes bibliográficos
Autor(a) principal: Radebe,I. S.
Data de Publicação: 2015
Outros Autores: Adali,S.
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=S1679-78252015000901666
Resumo: Abstract At the nano scale, the effect of surface stress becomes prominent as well as the so-called small scale effect. Furthermore due to difficulties in making accurate measurements at nano-scale as well as due to due to molecular defects and manufacturing tolerances, there exists a certain degree of uncertainty in the determination of the material properties of nano structures This, in turn, introduces some degree of uncertainty in the computation of the mechanical response of the nano-scale components. In the present study a convex model is employed to take surface tension, small scale parameter and the elastic constants as uncertain-but-bounded quantities in the buckling analysis of rectangular nanoplates. The objective is to determine the lowest buckling load for a given level of uncertainty to obtain a conservative estimate by taking the worst-case variations of material properties. Moreover the sensitivity of the buckling load to material uncertainties is also investigated.
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spelling Effect of Surface Stress on the Buckling of Nonlocal Nanoplates Subject to Material UncertaintyNanoplatessurface stressbucklingmaterial uncertaintynonlocal theorysensitivity analysisAbstract At the nano scale, the effect of surface stress becomes prominent as well as the so-called small scale effect. Furthermore due to difficulties in making accurate measurements at nano-scale as well as due to due to molecular defects and manufacturing tolerances, there exists a certain degree of uncertainty in the determination of the material properties of nano structures This, in turn, introduces some degree of uncertainty in the computation of the mechanical response of the nano-scale components. In the present study a convex model is employed to take surface tension, small scale parameter and the elastic constants as uncertain-but-bounded quantities in the buckling analysis of rectangular nanoplates. The objective is to determine the lowest buckling load for a given level of uncertainty to obtain a conservative estimate by taking the worst-case variations of material properties. Moreover the sensitivity of the buckling load to material uncertainties is also investigated.Associação Brasileira de Ciências Mecânicas2015-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-78252015000901666Latin American Journal of Solids and Structures v.12 n.9 2015reponame:Latin American journal of solids and structures (Online)instname:Associação Brasileira de Engenharia e Ciências Mecânicas (ABCM)instacron:ABCM10.1590/1679-78251468info:eu-repo/semantics/openAccessRadebe,I. S.Adali,S.eng2015-11-17T00:00:00Zoai:scielo:S1679-78252015000901666Revistahttp://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:2015-11-17T00:00Latin American journal of solids and structures (Online) - Associação Brasileira de Engenharia e Ciências Mecânicas (ABCM)false
dc.title.none.fl_str_mv Effect of Surface Stress on the Buckling of Nonlocal Nanoplates Subject to Material Uncertainty
title Effect of Surface Stress on the Buckling of Nonlocal Nanoplates Subject to Material Uncertainty
spellingShingle Effect of Surface Stress on the Buckling of Nonlocal Nanoplates Subject to Material Uncertainty
Radebe,I. S.
Nanoplates
surface stress
buckling
material uncertainty
nonlocal theory
sensitivity analysis
title_short Effect of Surface Stress on the Buckling of Nonlocal Nanoplates Subject to Material Uncertainty
title_full Effect of Surface Stress on the Buckling of Nonlocal Nanoplates Subject to Material Uncertainty
title_fullStr Effect of Surface Stress on the Buckling of Nonlocal Nanoplates Subject to Material Uncertainty
title_full_unstemmed Effect of Surface Stress on the Buckling of Nonlocal Nanoplates Subject to Material Uncertainty
title_sort Effect of Surface Stress on the Buckling of Nonlocal Nanoplates Subject to Material Uncertainty
author Radebe,I. S.
author_facet Radebe,I. S.
Adali,S.
author_role author
author2 Adali,S.
author2_role author
dc.contributor.author.fl_str_mv Radebe,I. S.
Adali,S.
dc.subject.por.fl_str_mv Nanoplates
surface stress
buckling
material uncertainty
nonlocal theory
sensitivity analysis
topic Nanoplates
surface stress
buckling
material uncertainty
nonlocal theory
sensitivity analysis
description Abstract At the nano scale, the effect of surface stress becomes prominent as well as the so-called small scale effect. Furthermore due to difficulties in making accurate measurements at nano-scale as well as due to due to molecular defects and manufacturing tolerances, there exists a certain degree of uncertainty in the determination of the material properties of nano structures This, in turn, introduces some degree of uncertainty in the computation of the mechanical response of the nano-scale components. In the present study a convex model is employed to take surface tension, small scale parameter and the elastic constants as uncertain-but-bounded quantities in the buckling analysis of rectangular nanoplates. The objective is to determine the lowest buckling load for a given level of uncertainty to obtain a conservative estimate by taking the worst-case variations of material properties. Moreover the sensitivity of the buckling load to material uncertainties is also investigated.
publishDate 2015
dc.date.none.fl_str_mv 2015-09-01
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=S1679-78252015000901666
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-78252015000901666
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/1679-78251468
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.12 n.9 2015
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
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