Simultaneous size/ material optimisation and accurate analysis of composite stiffened panels

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dc.contributor.author MONTEMURRO, Marco
ensam.hal.laboratories
  164351 Institut de Mécanique et d'Ingénierie de Bordeaux [I2M]
dc.contributor.author PAGANI, Alfonso
ensam.hal.laboratories
  444854 Dipartimento di Ingegneria Meccanica e Aerospaziale [Torino] [DIMEAS]
dc.contributor.author FIORDILINO, Giacinto Alberto
ensam.hal.laboratories
  444854 Dipartimento di Ingegneria Meccanica e Aerospaziale [Torino] [DIMEAS]
  164351 Institut de Mécanique et d'Ingénierie de Bordeaux [I2M]
dc.contributor.author PAILHES, Jérôme
ensam.hal.laboratories
  164351 Institut de Mécanique et d'Ingénierie de Bordeaux [I2M]
dc.contributor.author CARRERA, Erasmo
ensam.hal.laboratories
  444854 Dipartimento di Ingegneria Meccanica e Aerospaziale [Torino] [DIMEAS]
dc.date.accessioned 2018-04-10T09:43:34Z
dc.date.available 2018-04-10T09:43:34Z
dc.date.issued 2017
dc.date.submitted 2017-10-18T17:32:09Z
dc.identifier.uri http://hdl.handle.net/10985/12938
dc.description.abstract this 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).
en
dc.description.sponsorship SMARTCOMPOSITE (funded by Nouvelle-Aquitaine region)
dc.language.iso en
dc.publisher Società Editrice Esculapio
dc.rights Post-print
dc.subject Optimisation en
dc.subject Buckling en
dc.subject Composite materials en
dc.subject Stiffened panels en
dc.subject Global/local analysis en
dc.subject Carrera Unified Formulation en
dc.title Simultaneous size/ material optimisation and accurate analysis of composite stiffened panels en
ensam.hal.id hal-01762601 *
ensam.hal.status accept *
dc.typdoc Communications avec actes
dc.localisation Centre de Bordeaux-Talence
dc.subject.hal Mathématique: Analyse numérique
dc.subject.hal Mathématique: Optimisation et contrôle
dc.subject.hal Informatique: Ingénierie assistée par ordinateur
dc.subject.hal Informatique: Modélisation et simulation
dc.subject.hal Sciences de l'ingénieur: Mécanique
dc.subject.hal Sciences de l'ingénieur: Mécanique: Génie mécanique
dc.subject.hal Sciences de l'ingénieur: Mécanique: Matériaux et structures en mécanique
dc.subject.hal Sciences de l'ingénieur: Mécanique: Mécanique des matériaux
dc.subject.hal Sciences de l'ingénieur: Mécanique: Mécanique des solides
dc.subject.hal Sciences de l'ingénieur: Mécanique: Mécanique des structures
ensam.audience Non spécifiée
ensam.conference.title ICCS20 - 20th International Conference on Composite Structures
ensam.conference.date 2017-09-04
ensam.country France
ensam.title.proceeding ICCS20 - 20th International Conference on Composite Structures
ensam.page 203
ensam.city Paris
ensam.peerReviewing Oui
ensam.invitedCommunication Non
ensam.proceeding Oui

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