An energy-Based model of longitudinal splitting inunidirectional fiber-Reinforced composites

K. Oguni

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)


Unidirectional fiber-reinforced composites are often observed to fail in a longitudinalsplitting mode in the fiber direction under far-field compressive loading with weak lateral confinement. An energy-based model is developed based on the principle of minimumpotential energy and the evaluation of effective properties to obtain an analytical approxi-mation to the critical stress for longitudinal splitting. The analytic estimate for the com-pressive strength is used to illustrate its dependence on material properties, surfaceenergy, fiber volume fraction, fiber diameter, and lateral coffining pressure. The predictions of the model show good agreement with available experimental data.

Original languageEnglish
Pages (from-to)437-443
Number of pages7
JournalJournal of Applied Mechanics, Transactions ASME
Issue number3
Publication statusPublished - 2000 Sept
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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