On reflected interactions in elastic solids containing inhomogeneities

Gregory J. Rodin, George J. Weng

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

Interactions in linear elastic solids containing inhomogeneities are examined using integral equations. Direct and reflected interactions are identified. Direct interactions occur simply because elastic fields emitted by inhomogeneities affect each other. Reflected interactions occur because elastic fields emitted by inhomogeneities are reflected by the specimen boundary back to the individual inhomogeneities. It is shown that the reflected interactions are of critical importance to analysis of representative volume elements. Further, the reflected interactions are expressed in simple terms, so that one can obtain explicit approximate expressions for the effective stiffness tensor for linear elastic solids containing ellipsoidal and non-ellipsoidal inhomogeneities. For ellipsoidal inhomogeneities, the new approximation is closely related to that of Mori and Tanaka. In general, the new approximation can be used to recover Ponte Castañeda-Willis and Kanaun-Levins approximations. Connections with Maxwells approximation are established.

Original languageEnglish (US)
Pages (from-to)197-209
Number of pages13
JournalJournal of the Mechanics and Physics of Solids
Volume68
Issue number1
DOIs
StatePublished - Aug 2014

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Keywords

  • Effective elastic properties
  • Elastic interactions
  • Integral equations
  • Reflected interactions
  • Thermodynamic limit

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