Ultimate strength formulations for FPSO stiffened panels under combined compression and shear with initial imperfections and damage

Detalhes bibliográficos
Autor(a) principal: Rizzo,Nicolau Antonio dos Santos
Data de Publicação: 2018
Outros Autores: Caire,Marcelo
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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spelling 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
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