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dc.contributor.author
 hal.structure.identifier
MONTEMURRO, Marco
164351 Institut de Mécanique et d'Ingénierie de Bordeaux [I2M]
dc.contributor.author
 hal.structure.identifier
PAGANI, Alfonso
444854 Dipartimento di Ingegneria Meccanica e Aerospaziale [Torino] [DIMEAS]
dc.contributor.author
 hal.structure.identifier
FIORDILINO, Giacinto Alberto
444854 Dipartimento di Ingegneria Meccanica e Aerospaziale [Torino] [DIMEAS]
164351 Institut de Mécanique et d'Ingénierie de Bordeaux [I2M]
dc.contributor.author
 hal.structure.identifier
PAILHES, Jérôme
164351 Institut de Mécanique et d'Ingénierie de Bordeaux [I2M]
dc.contributor.author
 hal.structure.identifier
CARRERA, Erasmo
444854 Dipartimento di Ingegneria Meccanica e Aerospaziale [Torino] [DIMEAS]
dc.date.accessioned2018
dc.date.available2018
dc.date.issued2017
dc.date.submitted2017
dc.identifier.urihttp://hdl.handle.net/10985/12938
dc.description.abstractthis work deals with the problem of the least-weight design of a composite stiffened panel. The design problem is stated as a constrained non-linear programming problem (CNLPP). Optimisation constraints of different nature are considered: mechanical constraints on the admissible material properties of the laminates as well as on the global buckling load of the panel, geometrical and manufacturability constraints on the geometric design variables of both the skin and the stiffeners. To face such a problem a multi-scale two-level (MS2L) design methodology is proposed. The MS2L design method aims at optimising simultaneously both the geometrical and the material parameters for the skin and the stiffeners at each characteristic scale (meso and macro scales). The MS2L optimisation strategy relies on the one hand on the utilisation of the polar parameters (in the framework of the equivalent single layer theories) for describing the macroscopic behaviour of each laminate composing the panel (both skin and stiffeners) and on the other hand on a special hybrid algorithm (genetic algorithm + gradient-based algorithm) in order to perform the solution search for the problem at hand. In this background, the design problem is split into two different (but related) optimisation problems. At the first level (macroscopic scale) the goal is to find the optimum value of the geometric and material (i.e. the polar parameters) design variables of the panel minimising its mass and meeting (simultaneously) all the requirements provided by the technical specification (i.e. the optimisation constraints) for the problem at hand. The second-level problem focuses on the laminate mesoscopic scale (i.e. the ply-level). Here the goal is the determination of at least one stacking-sequence (for each laminate composing the panel) meeting the optimum value of both the material and geometrical design variables provided by the first-level problem. The effectiveness of the new, non-classical configurations will be verified a posteriori through a refined finite element model of the stiffened panel making use of elements with different kinematics and accuracy (in a global-local sense) in the framework of the Carrera Unified Formulation (CUF).
dc.description.sponsorshipSMARTCOMPOSITE (funded by Nouvelle-Aquitaine region)
dc.language.isoen
dc.publisherSocietà Editrice Esculapio
dc.rightsPost-print
dc.subjectOptimisation
dc.subjectBuckling
dc.subjectComposite materials
dc.subjectStiffened panels
dc.subjectGlobal/local analysis
dc.subjectCarrera Unified Formulation
dc.titleSimultaneous size/ material optimisation and accurate analysis of composite stiffened panels
dc.typdocCommunications avec actes
dc.localisationCentre de Bordeaux-Talence
dc.subject.halMathématique: Analyse numérique
dc.subject.halMathématique: Optimisation et contrôle
dc.subject.halInformatique: Ingénierie assistée par ordinateur
dc.subject.halInformatique: Modélisation et simulation
dc.subject.halSciences de l'ingénieur: Mécanique
dc.subject.halSciences de l'ingénieur: Mécanique: Génie mécanique
dc.subject.halSciences de l'ingénieur: Mécanique: Matériaux et structures en mécanique
dc.subject.halSciences de l'ingénieur: Mécanique: Mécanique des matériaux
dc.subject.halSciences de l'ingénieur: Mécanique: Mécanique des solides
dc.subject.halSciences de l'ingénieur: Mécanique: Mécanique des structures
ensam.audienceNon spécifiée
ensam.conference.titleICCS20 - 20th International Conference on Composite Structures
ensam.conference.date2017-09-04
ensam.countryFrance
ensam.title.proceedingICCS20 - 20th International Conference on Composite Structures
ensam.page203
ensam.cityParis
ensam.peerReviewingOui
ensam.invitedCommunicationNon
ensam.proceedingOui
hal.identifierhal-01762601
hal.version1


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