Numerical modelling of damage development and viscoplasticity in metal matrix composites

C. J. Lissenden, C. T. Herakovich

Research output: Contribution to journalArticle

50 Scopus citations

Abstract

Metal matrix composites can exhibit inelastic response due to matrix viscoplasticity as well as fiber/matrix interfacial damage. This paper presents a numerical procedure that can be used to implement a micromechanical model based on a periodic array of continuous fibers embedded in a metallic matrix. The model incorporates elastic-viscoplastic constitutive equations for the matrix and non-linear interfacial traction-displacement relations for the fiber/matrix interface. Generalized plane strain finite elements are formulated in such a way to allow the application of multiaxial loadings while only having to discretize a generic transverse plane. Non-linear lamination theory provides the link between the micro- and macro-level responses of laminated composites subjected to thermomechanical loading. Numerical results indicate that a relatively small number of elements are required to achieve mesh convergence. Also, the axial tensile response is independent of the condition of the fiber/matrix interface, while debonding significantly influences the transverse tensile and axial shear responses.

Original languageEnglish (US)
Pages (from-to)289-303
Number of pages15
JournalComputer Methods in Applied Mechanics and Engineering
Volume126
Issue number3-4
DOIs
StatePublished - Oct 1995

All Science Journal Classification (ASJC) codes

  • Computational Mechanics
  • Mechanics of Materials
  • Mechanical Engineering
  • Physics and Astronomy(all)
  • Computer Science Applications

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