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Journal ArticleDOI

Bounds and self-consistent estimates for the overall properties of anisotropic composites

John R. Willis
- 01 Jun 1977 - 
- Vol. 25, Iss: 3, pp 185-202
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TLDR
In this article, the thermal conductivity of a body containing aligned spheroidal inclusions is discussed as an example including, as limiting cases, bodies containing highlyconducting aligned needles and bodies containing aligned pennyshaped cracks.
Abstract
B ounds of Hashin-Shtrikman type and self-consistent estimates for the overall properties of composites, which may be anisotropic, are developed. Bodies containing aligned ellipsoidal inclusions are considered particularly, generalizing previously known results. The overall thermal conductivity of a body containing aligned spheroidal inclusions is discussed as an example including, as limiting cases, bodies containing highly-conducting aligned needles and bodies containing aligned pennyshaped cracks.

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Citations
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A new approach to the application of Mori-Tanaka's theory in composite materials

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Preprocessing and postprocessing for materials based on the homogenization method with adaptive finite element methods

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References
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Journal ArticleDOI

A variational approach to the theory of the elastic behaviour of multiphase materials

TL;DR: In this paper, the authors derived upper and lower bounds for the effective elastic moduli of quasi-isotropic and quasi-homogeneous multiphase materials of arbitrary phase geometry.
Journal ArticleDOI

A Variational Approach to the Theory of the Effective Magnetic Permeability of Multiphase Materials

TL;DR: In this article, the authors established and applied variational theorems for the derivation of bounds for the effective magnetic permeability of macroscopically homogeneous and isotropic multiphase materials.
Journal ArticleDOI

Elastic moduli of a cracked solid

TL;DR: In this paper, a self-consistent method for the elastic moduli of bodies containing randomly distributed flat cracks, with or without fluid in their interiors, is proposed and general concepts are outlined for arbitrary cracks and explicit derivations together with numerical results are given.
Journal ArticleDOI

On some variational principles in anisotropic and nonhomogeneous elasticity

TL;DR: In this article, the authors extended these variational principles to anisotropic and nonhomogeneous elasticity for polycrystals, and applied them to the theory of the elastic behavior of polycrystal polymers.
Journal ArticleDOI

A variational approach to the theory of the elastic behaviour of polycrystals

TL;DR: In this article, the authors derived lower and upper bounds for the elastic moduli of polycrystals in terms of the modulus of the constituting crystals, and showed that the present bounds are a considerable improvement of the well-known Voigt and Reuss bounds.
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