Applicability of the interface spring model for micromechanical analyses with interfacial imperfections to predict the modified exterior Eshelby tensor and effective modulus

Sangryun Lee, Youngsoo Kim, Jinyeop Lee, Seunghwa Ryu

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

Closed-form solutions for the modified exterior Eshelby tensor, strain concentration tensor, and effective moduli of particle-reinforced composites are presented when the interfacial damage is modeled as a linear-spring layer of vanishing thickness; the solutions are validated against finite element analyses. Based on the closed-form solutions, the applicability of the interface spring model is tested by calculating those quantities using finite element analysis augmented with a matrix–inhomogeneity non-overlapping condition. The results indicate that the interface spring model reasonably captures the characteristics of the stress distribution and effective moduli of composites, despite its well-known problem of unphysical overlapping between the matrix and inhomogeneity.

Original languageEnglish
Pages (from-to)2944-2960
Number of pages17
JournalMathematics and Mechanics of Solids
Volume24
Issue number9
DOIs
StatePublished - 1 Sep 2019

Keywords

  • effective modulus
  • Eshelby tensor
  • interfacial damage
  • micromechanics
  • strain concentration tensor

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