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A new analysis method for structural failure evaluation

2015-10Artigo científico Acesso restrito
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dc.contributor.authorEstêvão, João Manuel Carvalho
dc.contributor.authorOliveira, Carlos Sousa
dc.date.accessioned2016-05-11T08:40:22Z
dc.date.available2016-05-11T08:40:22Z
dc.date.issued2015-10
dc.description.abstractThere are many possible approaches for structural failure evaluation which uses different nonlinear structural analysis methods. For computer implementation purposes, some important differences between them are the results precision, the amount of computer memory needed and computer processing time. For solving practical problems, a compromise between accuracy and computational effort is needed. In this work, a new method is presented for linear and nonlinear structural analysis. The new developed method was named Fibre Contact Element Method (FCEM). In the proposed method, structures are divided in a mesh of several small rectangular block elements (neighbour blocks do not need to be aligned). These elements are divided in several micro fibre elements. Fibres belonging to neighbour blocks are connected between contact points. Two degrees of freedom are considered per contact point and three degrees of freedom are considered for each block (in a 2D model). The elemental block stiffness matrix is obtained from the assembly of fibre stiffness matrix. A static matrix condensation is preformed to reduce the block stiffness matrix dimension. The elasticity and plasticity is concentrated on each fibre element. Global nonlinear response can result from flexural or from shear fibre cracking or yielding. In this work, comparisons between numerical and analytical results are presented. The new method seems to be accurate and fast enough for solving practical problems, namely for seismic damage assessment. Results seem to demonstrate that FCEM can be a valid option for using in structural failure evaluation.pt_PT
dc.identifier.citationESTÊVÃO, J.M.C. ; OLIVEIRA, C.S. (2015) – A new analysis method for structural failure evaluation. Engineering Failure Analysis. Elsevier. Vol. 56, p. 573-584.pt_PT
dc.identifier.doihttp://dx.doi.org/ 10.1016/j.engfailanal.2014.08.009pt_PT
dc.identifier.issn1350-6307
dc.identifier.otherAUT: JES00807;
dc.identifier.urihttp://hdl.handle.net/10400.1/8207
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relation.publisherversionhttp://www.sciencedirect.com/science/article/pii/S1350630714002702pt_PT
dc.subjectStructural failurespt_PT
dc.subjectMicro-modellingpt_PT
dc.subjectFracturept_PT
dc.subjectFibre contact element methodpt_PT
dc.titleA new analysis method for structural failure evaluationpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage584pt_PT
oaire.citation.startPage573pt_PT
oaire.citation.titleEngineering Failure Analysispt_PT
oaire.citation.volume56pt_PT
person.familyNameEstêvão
person.givenNameJoão Manuel Carvalho
person.identifierLh0jYe0AAAAJ&hl
person.identifier.ciencia-id001A-8761-A164
person.identifier.orcid0000-0002-7356-9893
person.identifier.scopus-author-id56268965500
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication39e5f28b-fdf6-4823-b622-87f4177dd013
relation.isAuthorOfPublication.latestForDiscovery39e5f28b-fdf6-4823-b622-87f4177dd013

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