Simultaneous buckling and fundamental frequency optimization of frames under uncertain loadings
Autor(a) principal: | |
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Data de Publicação: | 2010 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Journal of the Brazilian Society of Mechanical Sciences and Engineering (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1678-58782010000100010 |
Resumo: | This work presents the optimization of a frame under uncertain loadings when two design criteria are taken simultaneously into account. The uncertainty relates to the applied loading and is inherent to the operation of structures since real structures are designed to sustain a large variety of load cases of practical relevance. The design criteria considered are two of the most important from a practical point of view: buckling load and natural frequency. The technique developed is based in convex modeling where a load space is defined and all the elements of that load space have equal probability of occurrence. The outcome of the technique is an optimal design for which one loading or several loadings of the load space are the most dangerous or harmful to the structure. On the other hand, it is guaranteed that all the other loadings contained in the load space are conservative in the sense that they are less harmful to the optimal design. |
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Simultaneous buckling and fundamental frequency optimization of frames under uncertain loadingsmulticriteria optimizationbucklingfundamental frequencyminimax strategyuncertain loadingThis work presents the optimization of a frame under uncertain loadings when two design criteria are taken simultaneously into account. The uncertainty relates to the applied loading and is inherent to the operation of structures since real structures are designed to sustain a large variety of load cases of practical relevance. The design criteria considered are two of the most important from a practical point of view: buckling load and natural frequency. The technique developed is based in convex modeling where a load space is defined and all the elements of that load space have equal probability of occurrence. The outcome of the technique is an optimal design for which one loading or several loadings of the load space are the most dangerous or harmful to the structure. On the other hand, it is guaranteed that all the other loadings contained in the load space are conservative in the sense that they are less harmful to the optimal design.Associação Brasileira de Engenharia e Ciências Mecânicas - ABCM2010-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1678-58782010000100010Journal of the Brazilian Society of Mechanical Sciences and Engineering v.32 n.1 2010reponame:Journal of the Brazilian Society of Mechanical Sciences and Engineering (Online)instname:Associação Brasileira de Engenharia e Ciências Mecânicas (ABCM)instacron:ABCM10.1590/S1678-58782010000100010info:eu-repo/semantics/openAccessFerreira,A. P. C. S.Faria,A. R. deeng2010-07-12T00:00:00Zoai:scielo:S1678-58782010000100010Revistahttps://www.scielo.br/j/jbsmse/https://old.scielo.br/oai/scielo-oai.php||abcm@abcm.org.br1806-36911678-5878opendoar:2010-07-12T00:00Journal of the Brazilian Society of Mechanical Sciences and Engineering (Online) - Associação Brasileira de Engenharia e Ciências Mecânicas (ABCM)false |
dc.title.none.fl_str_mv |
Simultaneous buckling and fundamental frequency optimization of frames under uncertain loadings |
title |
Simultaneous buckling and fundamental frequency optimization of frames under uncertain loadings |
spellingShingle |
Simultaneous buckling and fundamental frequency optimization of frames under uncertain loadings Ferreira,A. P. C. S. multicriteria optimization buckling fundamental frequency minimax strategy uncertain loading |
title_short |
Simultaneous buckling and fundamental frequency optimization of frames under uncertain loadings |
title_full |
Simultaneous buckling and fundamental frequency optimization of frames under uncertain loadings |
title_fullStr |
Simultaneous buckling and fundamental frequency optimization of frames under uncertain loadings |
title_full_unstemmed |
Simultaneous buckling and fundamental frequency optimization of frames under uncertain loadings |
title_sort |
Simultaneous buckling and fundamental frequency optimization of frames under uncertain loadings |
author |
Ferreira,A. P. C. S. |
author_facet |
Ferreira,A. P. C. S. Faria,A. R. de |
author_role |
author |
author2 |
Faria,A. R. de |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Ferreira,A. P. C. S. Faria,A. R. de |
dc.subject.por.fl_str_mv |
multicriteria optimization buckling fundamental frequency minimax strategy uncertain loading |
topic |
multicriteria optimization buckling fundamental frequency minimax strategy uncertain loading |
description |
This work presents the optimization of a frame under uncertain loadings when two design criteria are taken simultaneously into account. The uncertainty relates to the applied loading and is inherent to the operation of structures since real structures are designed to sustain a large variety of load cases of practical relevance. The design criteria considered are two of the most important from a practical point of view: buckling load and natural frequency. The technique developed is based in convex modeling where a load space is defined and all the elements of that load space have equal probability of occurrence. The outcome of the technique is an optimal design for which one loading or several loadings of the load space are the most dangerous or harmful to the structure. On the other hand, it is guaranteed that all the other loadings contained in the load space are conservative in the sense that they are less harmful to the optimal design. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-03-01 |
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=S1678-58782010000100010 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1678-58782010000100010 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1678-58782010000100010 |
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 Engenharia e Ciências Mecânicas - ABCM |
publisher.none.fl_str_mv |
Associação Brasileira de Engenharia e Ciências Mecânicas - ABCM |
dc.source.none.fl_str_mv |
Journal of the Brazilian Society of Mechanical Sciences and Engineering v.32 n.1 2010 reponame:Journal of the Brazilian Society of Mechanical Sciences and Engineering (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 |
Journal of the Brazilian Society of Mechanical Sciences and Engineering (Online) |
collection |
Journal of the Brazilian Society of Mechanical Sciences and Engineering (Online) |
repository.name.fl_str_mv |
Journal of the Brazilian Society of Mechanical Sciences and Engineering (Online) - Associação Brasileira de Engenharia e Ciências Mecânicas (ABCM) |
repository.mail.fl_str_mv |
||abcm@abcm.org.br |
_version_ |
1754734681478135808 |