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A one-parameter generalized self-consistent model for isotropic multiphase composites
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DOI：10.1016/j.ijsolstr.2007.03.008.png)
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Abstract
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The classical generalized self-consistent model (GSCM) is recognized to be suitable and efficient for estimating the effective moduli of an isotropic composite consisting of an isotropic host matrix and an isotropic inclusion phase. The present work aims to enlarge the scope of the GSCM so that it becomes applicable to a good number of important situations where the phases cannot be differentiated as the host matrix and inclusions. This objective is achieved first by inserting into the unknown effective medium a coated composite sphere whose core is made of the unknown effective medium and whose coatings are formed of the constituent phases and then by imposing an energy equivalency condition. The equations thus obtained to characterize the effective bulk and shear moduli involve a microstructural parameter which turns out to be capable of describing in some sense how far a microstructure is from the host matrix/inclusion morphology. The important case of two-phase composites is studied in detail to illustrate the salient features of the proposed model. (C) 2007 Elsevier Ltd. All rights reserved.
Keywords:
micromechanics
composites
bulk modulus
shear modulus
generalized self-consistent model
bounds of hashin and shtrikman
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