Fe mirco-models to study contact states, stresses and failure mechanisms in a polymer composite subjected to a sliding steel asperity

Tibor Goda, Károly Váradi, Klaus Friedrich

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

FE micro-models have been developed in order to determine contact, stress and strain conditions produced by a steel asperity sliding on the surface of a fibre-reinforced polymer composite. Three cases were studied, i.e. a normal, a parallel and an anti-parallel fibre orientation relative to the sliding direction. In order to get more realistic simulation results about the failure conditions in the composite structure, FE contact macro/micro-models were used, contrary to the so far widely applied anisotropic analytical or numerical macro-models. To model a "micro-environment" as part of a "macro-environment", the displacement coupling technique was introduced. On the basis of the stress results, conclusions were drawn on the possible wear mechanisms of the fibre-reinforced polymer composites. For each fibre orientation, surface failure of the matrix material occurs due to high shear stresses. The other characteristic source of failure is fibre/matrix debonding, eventually followed by fibre cracking events.

Original languageEnglish
Article number8941
Pages (from-to)1584-1590
Number of pages7
JournalWear
Volume250-251
DOIs
Publication statusPublished - Jan 1 2001

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Keywords

  • Contact mechanics
  • Finite element analysis
  • Micro-macro-models
  • Polymer composites
  • Wear mechanisms

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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