A micromechanical failure model for unidirectional fiber reinforced composites

K. Oguni, G. Ravichandran

研究成果: Article査読

14 被引用数 (Scopus)

抄録

Results from a newly developed model for failure in unidirectional fiber reinforced composites based on fracture mechanics are presented. The model is based on (i) analysis of branch crack initiation from the tip of an initial microcrack embedded in an anisotropic material, which serves as a model for the fiber reinforced composite and (ii) evaluation of anisotropy in homogenized elastic material properties and fracture toughness. Based on this model, failure envelope, dominant initial flaw orientation and failure mode for unidirectional fiber reinforced composites under a wide range of stress states are predicted. Parametric study provides quantitative evaluation of the effect of various mechanical and physical properties on the failure behavior, and their influence on strength is identified. Results from the current model are compared with those of existing phenomenological models, which show reasonable agreement.

本文言語English
ページ(範囲)7215-7233
ページ数19
ジャーナルInternational Journal of Solids and Structures
38
40-41
DOI
出版ステータスPublished - 2001 9月 7
外部発表はい

ASJC Scopus subject areas

  • モデリングとシミュレーション
  • 材料科学一般
  • 凝縮系物理学
  • 材料力学
  • 機械工学
  • 応用数学

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