On the behaviour of a particulate metal matrix composite subjected to cyclic temperature and constant stress

Haofeng Chen, Alan R.S. Ponter

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

The paper describes a method of characterising the behaviour of an idealised particulate metal matrix composite composed of elastic particles and an elastic-perfectly plastic matrix subjected to constant macro stress and a cyclic temperature history. The computational method, the Linear Matching Method, was originally developed for structural life assessment studies, and allows a direct evaluation of the load ranges for which differing modes of behaviour occur in the steady cyclic state; shakedown, reverse plasticity and ratchetting. A simple homogenised model is considered, consisting of spherical particles embedded in a cubic matrix array. The resulting solutions are presented as non-dimensional equations derived from numerical solutions for two composites, alumina and silicon carbide particles embedded in an aluminium matrix.
Original languageEnglish
Pages (from-to)425-441
Number of pages16
JournalComputational Materials Science
Volume34
Issue number4
DOIs
Publication statusPublished - Dec 2005

Keywords

  • particulate composites
  • thermal loading
  • plasticity
  • shakedown
  • ratchetting
  • materials science

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