Multi-scale identification of elastic properties for anisotropic media through a global hybrid evolutionary-based inverse approach

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dc.contributor.author CAPPELLI, Lorenzo
ensam.hal.laboratories
  164351 Institut de Mécanique et d'Ingénierie de Bordeaux [I2M]
dc.contributor.author MONTEMURRO, Marco
ensam.hal.laboratories
  164351 Institut de Mécanique et d'Ingénierie de Bordeaux [I2M]
dc.contributor.author DAU, Frédéric
ensam.hal.laboratories
  164351 Institut de Mécanique et d'Ingénierie de Bordeaux [I2M]
dc.contributor.author GUILLAUMAT, Laurent
ensam.hal.laboratories
  206863 Laboratoire des Arts et Métiers ParisTech d'Angers - Procédés Matériaux Durabilité [LAMPA - PMD]
dc.date.accessioned 2018-04-10T09:26:03Z
dc.date.available 2018-04-10T09:26:03Z
dc.date.issued 2017
dc.date.submitted 2017-10-18T17:43:16Z
dc.identifier.uri http://hdl.handle.net/10985/12937
dc.description.abstract One of the main issues of composite materials is related to the difficulty of
characterising the full set of material properties at both mesoscopic and microscopic scales. Indeed, classical mechanical tests (traction/compression, 3 or 4 points bending tests, etc.) are not able to provide the full set of 3D material properties of composites. Furthermore, these tests can provide only the in-plane elastic properties of the constitutive lamina (i.e at. the laminate mesoscopic scale). Therefore, in order to go beyond the main restrictions imposed by standard destructive tests, this work deals with the problem of characterising the material properties of a composite plate made of unidirectional fibre-reinforced laminae (at each characteristic scale), through a single non-destructive modal test performed at the macroscale, i.e. that of the specimen (the laminate). To face such a problem a general multi-scale identification strategy (MSIS) is proposed.
The MSIS aims at identifying the constitutive properties at both micro and meso scales by exploiting the information restrained in the macroscopic dynamical response of the laminate (e.g. in terms of its eigenfrequencies). The MSIS relies on the one hand on the strain energy homogenisation technique of periodic media (for determining the effective elastic properties of the lamina as a function of the geometrical and material properties of the microscopic constitutive phases) and on the other hand on a special hybrid algorithm (genetic algorithm + gradient-based algorithm) in order to perform the solution search for the considered problem.
The identification problem is stated as a constrained inverse problem (a least-square
constrained problem), where the objective function depends upon both the measured and evaluated (from finite element analysis) natural frequencies of the laminated plate. In this background, the optimisation variables are both geometrical and material properties of the constitutive phases composing the representative volume element (RVE) of the composite.
The effectiveness of the proposed approach will be proven through a campaign of
experimental/numerical tests conducted on standard laminates made of unidirectional plies.
en
dc.description.sponsorship This project has received funding from the European Union’s Horizon 2020 research and innovationprogramme under grant agreement No 642121.
dc.language.iso en
dc.publisher Società Editrice Esculapio
dc.rights Post-print
dc.subject Homogenisation en
dc.subject Composite materials en
dc.subject Optimisation en
dc.subject Modal analysis en
dc.subject Inverse problems en
dc.subject Identification en
dc.title Multi-scale identification of elastic properties for anisotropic media through a global hybrid evolutionary-based inverse approach en
ensam.hal.id hal-01762564 *
ensam.hal.status accept *
dc.typdoc Communications avec actes
dc.localisation Centre de Angers
dc.localisation Centre de Bordeaux-Talence
dc.subject.hal Mathématique: Optimisation et contrôle
dc.subject.hal Informatique: Modélisation et simulation
dc.subject.hal Sciences de l'ingénieur: Matériaux
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 Internationale
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 199
ensam.city Paris
ensam.peerReviewing Oui
ensam.invitedCommunication Non
ensam.proceeding Oui

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