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A multi-scale approach for the optimum design of sandwich plates with honeycomb core. Part I: homogenisation of core properties

Article dans une revue avec comité de lecture
Auteur
ccCATAPANO, Anita
ccMONTEMURRO, Marco

URI
http://hdl.handle.net/10985/8498
DOI
10.1016/j.compstruct.2014.07.057
Date
2014
Journal
Composite Structures

Résumé

This work deals with the problem of the optimum design of a sandwich panel. The design process is based on a general two-level optimisation strategy involving different scales: the meso-scale for both the unit cell of the core and the constitutive layer of the laminated skins and the macro-scale for the whole panel. Concerning the meso-scale of the honeycomb core, an appropriate model of the unit cell able to properly provide its effective elastic properties (to be used at the macro-scale) must be conceived. To this purpose, in this first paper, we present the numerical homogenisation technique as well as the related finite element model of the unit cell which makes use of solid elements instead of the usual shell ones. A numerical study to determine the effective properties of the honeycomb along with a comparison with existing models and a sensitive analysis in terms of the geometric parameters of the unit cell have been conducted. Numerical results show that shell-based models are no longer adapted to evaluate the core properties, mostly in the context of an optimisation procedure where the parameters of the unit cell can get values that go beyond the limits imposed by a 2D model.

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Cette publication figure dans le(s) laboratoire(s) suivant(s)

  • Institut de Mécanique et d’Ingénierie de Bordeaux (I2M)

Documents liés

Visualiser des documents liés par titre, auteur, créateur et sujet.

  • Determination of the effective thermoelastic properties of cork-based agglomerates 
    Article dans une revue avec comité de lecture
    DELUCIA, Marco; ccCATAPANO, Anita; ccMONTEMURRO, Marco; ccPAILHES, Jerome (SAGE Publications, 2019)
    In this paper, a general numerical homogenisation scheme coupled with an efficient modelling strategy for predicting the effective thermoelastic properties of cork-based agglomerates is presented. In order to generate a ...
  • Thermo-mechanical homogenisation of cork-based composites: variability in materials properties and propagation of uncertainty 
    Conférence invitée
    DELUCIA, Marco; ccCATAPANO, Anita; ccMONTEMURRO, Marco; ccPAILHES, Jerome (2019)
    The last decades have been characterized by a growth of raw material demand, in particular due to the consumerism in developed countries and to the fast industrialization of emerging economies. Nowadays, with the aim to ...
  • On the effective integration of manufacturability constraints within the multi-scale methodology for designing variable angle-tow laminates 
    Article dans une revue avec comité de lecture
    ccMONTEMURRO, Marco; ccCATAPANO, Anita (Elsevier, 2017)
    In this work a multi-scale two-level (MS2L) optimisation strategy for optimising VAT composites is presented. In the framework of the MS2L methodology, the design problem is split and solved into two steps. At the first ...
  • A new paradigm for the optimum design of variable angle tow laminates 
    Chapitre d'ouvrage scientifique
    ccMONTEMURRO, Marco; ccCATAPANO, Anita (Springer, 2016)
    In this work the authors propose a new paradigm for the optimum design of variable angle tow (VAT) composites. They propose a generalisation of a multi-scale two-level (MS2L) optimisation strategy already employed to solve ...
  • Variable-stiffness composites optimisation under multiple design requirements and loads 
    Article dans une revue avec comité de lecture
    IZZI, Michele Iacopo; ccMONTEMURRO, Marco; ccCATAPANO, Anita (Elsevier, 2023-11)
    The aim of this paper is twofold. On the one hand, it presents a methodology for the deterministic optimisation of a general class of variable-stiffness composite (VSC) structures, including a solution obtained by using ...

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