Numerical simulation of microscopic damage and strength of fiber-reinforced plastic composites

T. Okabe, T. Motani, M. Nishikawa, M. Hashimoto

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

Abstract

Discontinuous fiber-reinforced composites have better productivity and formability than continuous fiber-reinforced composites. However, their strength is remarkably low. Thus, there is an urgent need to improve the strength of discontinuous fiber-reinforced plastic composites. In this study, we utilized a unit-cell model that considers microscopic damage including matrix cracking and fiber breaking, and incorporates constitutive laws of thermosetting resin or thermoplastic resin for the matrix. The tensile damage and strength of the composite were investigated for various fiber lengths and/or matrix properties. We compared the simulated strengths with experiments for carbon fiber-reinforced polypropylene. The effect of deformation rate on mechanical behavior was also investigated.

Original languageEnglish
Pages (from-to)147-163
Number of pages17
JournalAdvanced Composite Materials
Volume21
Issue number2
DOIs
Publication statusPublished - 2012 Oct 5

Keywords

  • Discontinuous fiber
  • Fiber-reinforced composite material
  • Microscopic damage
  • Numerical analysis
  • Strength

ASJC Scopus subject areas

  • Ceramics and Composites
  • Mechanics of Materials
  • Mechanical Engineering

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