Damage tolerance optimization of composite stringer run-out under tensile load
dc.contributor.author
dc.date.accessioned
2015-12-15T08:15:15Z
dc.date.issued
2015-12-01
dc.identifier.issn
0263-8223
dc.identifier.uri
dc.description.abstract
Stringer run-outs are a common solution to achieve the necessary strength, stiffness and geometric requirements of some structural solutions. The mechanical behavior and complexity of such design details requires careful and thorough studies to ensure the structural integrity of the structure. The influence of some geometric variables of the run-out in the interface of the set stringer-panel is crucial to avoid the onset and growth of delamination cracks. In this study, a damage tolerant design of a stringer run-out is achieved by a process of design optimization and surrogate modeling techniques. A parametric finite element model created with python was used to generate a number of different geometrical designs of the stringer run-out. The relevant information of these models was adjusted using Radial Basis Functions (RBF). Finally, the optimization problem was solved using Quasi-Newton method and Genetic Algorithms. In the solution process, the RBF were used to compute the objective function: ratio between the energy release rate and the critical energy release rate according to the Benzeggagh–Kenane mixed mode criterion. Some design guidelines to obtain a damage tolerant stringer-panel interface have been derived from the results
dc.description.sponsorship
The authors wish to acknowledge the Ministerio de Economía y Competitividad for the funding of the project MAT2013-46749-R and particularly to Universitat de Girona for the research Grant coded as BR2011/02
dc.format.mimetype
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier
dc.relation
info:eu-repo/grantAgreement/MINECO//MAT2013-46749-R/ES/DIAGRAMAS DE FACTORES DE CONCENTRACION DE TENSIONES PARA MATERIALES CASI-FRAGILES/
dc.relation.isformatof
Versió postprint del document publicat a: http://dx.doi.org/10.1016/j.compstruct.2015.07.025
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© Composite Structures, 2015, vol. 133, p. 98-104
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Articles publicats (D-EMCI)
dc.rights
Reconeixement-NoComercial-SenseObraDerivada 4.0 Internacional
dc.rights.uri
dc.subject
dc.title
Damage tolerance optimization of composite stringer run-out under tensile load
dc.type
info:eu-repo/semantics/article
dc.rights.accessRights
info:eu-repo/semantics/openAccess
dc.type.version
info:eu-repo/semantics/acceptedVersion
dc.identifier.doi
dc.identifier.idgrec
023628
dc.contributor.funder
dc.relation.ProjectAcronym
dc.identifier.eissn
1879-1085