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Bounds on size effects in composites via homogenization accounting for general interfaces

Article dans une revue avec comité de lecture
Auteur
FIROOZ, Soheil
136243 Bilkent University [Ankara]
CHATZIGEORGIOU, George
ccMERAGHNI, Fodil
178323 Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux [LEM3]
JAVILI, Ali
136243 Bilkent University [Ankara]

URI
http://hdl.handle.net/10985/15215
DOI
10.1007/s00161-019-00796-w
Date
2019
Journal
Continuum Mechanics and Thermodynamics

Résumé

This manuscript provides novel bounds and estimates, for the first time, on size-dependent properties of composites accounting for generalized interfaces in their microstructure, via analytical homogenization verified by computational analysis. We extend both the composite cylinder assemblage and Mori–Tanaka approaches to account for the general interface model. Our proposed strategy does not only determine the overall response of composites, but also it provides information about the local fields for each phase of the medium including the interface. We present a comprehensive study on a broad range of interface parameters, stiffness ratios and sizes. Our analytical solutions are in excellent agreement with the computational results using the finite element method. Based on the observations throughout our investigations, two notions of size-dependent bounds and ultimate bounds on the effective response of composites are introduced which yield a significant insight into the size effects, particularly important for the design of nano-composites.

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  • Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux (LEM3)

Documents liés

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

  • Homogenization accounting for size effects in particulate composites due to general interfaces 
    Article dans une revue avec comité de lecture
    FIROOZ, Soheil; CHATZIGEORGIOU, George; ccMERAGHNI, Fodil; JAVILI, Ali (Elsevier, 2019)
    Two analytical approaches are developed to determine the overall size-dependent response of composites embedding general interfaces. The first approach extends the composite sphere assemblage (CSA) approach and the generalized ...
  • A systematic study on homogenization and the utility of circular simplified RVE 
    Article dans une revue avec comité de lecture
    FIROOZ, Soheil; SAEB, Saba; CHATZIGEORGIOU, George; ccMERAGHNI, Fodil; STEINMANN, Paul; JAVILI, Ali (SAGE Publications, 2019)
    Although both computational and analytical homogenization are well-established today, a thorough and systematic study to compare them is missing in the literature. This manuscript aims to provide an exhaustive comparison ...
  • Extended general interfaces: Mori–Tanaka homogenization and average fields 
    Article dans une revue avec comité de lecture
    FIROOZ, Soheil; CHATZIGEORGIOU, George; STEINMANN, Paul; JAVILI, Ali (Elsevier BV, 2022-08)
    A well-established methodology to capture interphases in heterogeneous materials is to replace them by a zero-thickness interface model. Commonly accepted interface models intuitively assume that to satisfy the angular ...
  • Micromechanical method for effective piezoelectric properties and electromechanical fields in multi-coated long fiber composites 
    Article dans une revue avec comité de lecture
    CHATZIGEORGIOU, George; JAVILI, Ali; ccMERAGHNI, Fodil (Elsevier, 2018)
    This paper proposes a micromechanical framework for identifying the macroscopic behavior of multi-coated long fiber composites, as well as the average electromechanical microscopic fields of all phases (matrix, fibers, ...
  • Homogenization of size-dependent multiphysics behavior of nanostructured piezoelectric composites with energetic surfaces 
    Article dans une revue avec comité de lecture
    CHEN, Qiang; CHATZIGEORGIOU, George; ccMERAGHNI, Fodil; JAVILI, Ali (Elsevier BV, 2022)
    Surface piezoelectricity considering the extended Gurtin--Murdoch coherent interface model has been incorporated into the composite cylinder assemblage (CCA), generalized self-consistent method (GSCM), as well as the ...

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