A fatigue damage meso-model for fiber-reinforced composites with stress ratio effect

Wenjiao Zhang*, Zhengong Zhou, Fabrizio Scarpa, Shuyuan Zhao

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)

9 Citations (Scopus)
373 Downloads (Pure)

Abstract

This work presents a fatigue damage meso-model for fiber-reinforced plastic composites, in which the effect of stress ratios on the off-axis fatigue behavior is taken into account. The non-dimensional effective stress concept is introduced in the continuum damage mechanics method. Damage growths and fatigue failure are studied along axial, transverse and shear directions at meso-scale level. The proposed model is validated through numerical simulations that describe the meso fatigue damage accumulation and the fatigue life for off-axis unidirectional fiber-reinforced plastic composite laminates of arbitrary fiber orientation under different stress ratios. It is shown that the fatigue damage behavior and fatigue life for off-axis unidirectional glass/epoxy and carbon/epoxy composite laminates are adequately described by the proposed fatigue model over the range of different stress ratios.
Original languageEnglish
Pages (from-to)212-220
Number of pages9
JournalMaterials and Design
Volume107
Early online date11 Jun 2016
DOIs
Publication statusPublished - 5 Oct 2016

Keywords

  • fiber-reinforced composite
  • fatigue damage
  • meso-model
  • continuum damage mechanics
  • stress ratio

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