Ultimate strength formulations for FPSO stiffened panels under combined compression and shear with initial imperfections and damage
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | |
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=S1679-78252018001100708 |
Resumo: | Abstract Accidental collision of striking objects, such as a supply vessel, into the side panel of a FPSO highly influences its ultimate strength assessment. An empirical formula for predicting the ultimate strength of damaged stiffened panels under combined loading of shear and longitudinal compression is empirically derived in this work based on curve fitting of quasi-static nonlinear finite element (FE) analyses. Initial imperfections are introduced by scaling the first buckling mode shape and the damage is caused by residual deformation from a rigid sphere indentation. A pure shear loading is applied at several levels followed by compression loading using the modified Riks method for a number of sphere indentation damages. The suggested formula for a typical FPSO stiffened side shell panel presented an excellent correlation with the nonlinear FE results and can be particularly useful in the preliminary design phase (no damage) and for a quick estimation of the panel residual strength with indentation damage. |
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Latin American journal of solids and structures (Online) |
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Ultimate strength formulations for FPSO stiffened panels under combined compression and shear with initial imperfections and damageultimate strengthFPSOedge shearlongitudinal compressiondamageAbstract Accidental collision of striking objects, such as a supply vessel, into the side panel of a FPSO highly influences its ultimate strength assessment. An empirical formula for predicting the ultimate strength of damaged stiffened panels under combined loading of shear and longitudinal compression is empirically derived in this work based on curve fitting of quasi-static nonlinear finite element (FE) analyses. Initial imperfections are introduced by scaling the first buckling mode shape and the damage is caused by residual deformation from a rigid sphere indentation. A pure shear loading is applied at several levels followed by compression loading using the modified Riks method for a number of sphere indentation damages. The suggested formula for a typical FPSO stiffened side shell panel presented an excellent correlation with the nonlinear FE results and can be particularly useful in the preliminary design phase (no damage) and for a quick estimation of the panel residual strength with indentation damage.Associação Brasileira de Ciências Mecânicas2018-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-78252018001100708Latin American Journal of Solids and Structures v.15 n.11 2018reponame:Latin American journal of solids and structures (Online)instname:Associação Brasileira de Engenharia e Ciências Mecânicas (ABCM)instacron:ABCM10.1590/1679-78254320info:eu-repo/semantics/openAccessRizzo,Nicolau Antonio dos SantosCaire,Marceloeng2018-10-26T00:00:00Zoai:scielo:S1679-78252018001100708Revistahttp://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:2018-10-26T00:00Latin American journal of solids and structures (Online) - Associação Brasileira de Engenharia e Ciências Mecânicas (ABCM)false |
dc.title.none.fl_str_mv |
Ultimate strength formulations for FPSO stiffened panels under combined compression and shear with initial imperfections and damage |
title |
Ultimate strength formulations for FPSO stiffened panels under combined compression and shear with initial imperfections and damage |
spellingShingle |
Ultimate strength formulations for FPSO stiffened panels under combined compression and shear with initial imperfections and damage Rizzo,Nicolau Antonio dos Santos ultimate strength FPSO edge shear longitudinal compression damage |
title_short |
Ultimate strength formulations for FPSO stiffened panels under combined compression and shear with initial imperfections and damage |
title_full |
Ultimate strength formulations for FPSO stiffened panels under combined compression and shear with initial imperfections and damage |
title_fullStr |
Ultimate strength formulations for FPSO stiffened panels under combined compression and shear with initial imperfections and damage |
title_full_unstemmed |
Ultimate strength formulations for FPSO stiffened panels under combined compression and shear with initial imperfections and damage |
title_sort |
Ultimate strength formulations for FPSO stiffened panels under combined compression and shear with initial imperfections and damage |
author |
Rizzo,Nicolau Antonio dos Santos |
author_facet |
Rizzo,Nicolau Antonio dos Santos Caire,Marcelo |
author_role |
author |
author2 |
Caire,Marcelo |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Rizzo,Nicolau Antonio dos Santos Caire,Marcelo |
dc.subject.por.fl_str_mv |
ultimate strength FPSO edge shear longitudinal compression damage |
topic |
ultimate strength FPSO edge shear longitudinal compression damage |
description |
Abstract Accidental collision of striking objects, such as a supply vessel, into the side panel of a FPSO highly influences its ultimate strength assessment. An empirical formula for predicting the ultimate strength of damaged stiffened panels under combined loading of shear and longitudinal compression is empirically derived in this work based on curve fitting of quasi-static nonlinear finite element (FE) analyses. Initial imperfections are introduced by scaling the first buckling mode shape and the damage is caused by residual deformation from a rigid sphere indentation. A pure shear loading is applied at several levels followed by compression loading using the modified Riks method for a number of sphere indentation damages. The suggested formula for a typical FPSO stiffened side shell panel presented an excellent correlation with the nonlinear FE results and can be particularly useful in the preliminary design phase (no damage) and for a quick estimation of the panel residual strength with indentation damage. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-01-01 |
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=S1679-78252018001100708 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-78252018001100708 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/1679-78254320 |
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.15 n.11 2018 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_ |
1754302889958834176 |