Header menu link for other important links
X
Strength distribution of large unidirectional composite patches with realistic load sharing
Published in American Physical Society
2017
PMID: 29347479
Volume: 96
   
Issue: 4
Abstract
Monte Carlo simulations of the failure of unidirectional fiber composites in a plane transverse to the fiber direction are performed on much larger patches than in previous works, assuming a realistic load redistribution scheme from broken to intact fibers. Computational effort involved in these simulations is substantially reduced using an algorithm based on the quadtree data structure. The empirical strength distribution obtained from the simulations has a weak-link character, regardless of the variability in fiber strengths. The empirical strength distribution is well captured by a probabilistic model based on the growth of a tight cluster of fiber breaks. It is also well captured by regarding composite patch failure as the failure of the weakest equal load-sharing bundle of a certain size, following Curtin [Phys. Rev. Lett. 80, 1445 (1998)PRLTAO0031-900710.1103/PhysRevLett.80.1445]. The approximate coincidence of these two predictions identifies the dominant failure mechanism underlying Curtin's empirical scaling relationship. © 2017 American Physical Society.
About the journal
JournalData powered by TypesetPhysical Review E
PublisherData powered by TypesetAmerican Physical Society
ISSN24700045
Open AccessYes
Concepts (17)
  •  related image
    Intelligent systems
  •  related image
    Monte carlo methods
  •  related image
    Probability distributions
  •  related image
    Stress intensity factors
  •  related image
    COMPOSITE PATCHES
  •  related image
    Computational effort
  •  related image
    LOAD REDISTRIBUTION
  •  related image
    Probabilistic modeling
  •  related image
    QUADTREE DATA STRUCTURES
  •  related image
    STRENGTH DISTRIBUTION
  •  related image
    Unidirectional composites
  •  related image
    UNIDIRECTIONAL FIBER COMPOSITES
  •  related image
    Fibers
  •  related image
    Algorithm
  •  related image
    Article
  •  related image
    Monte carlo method
  •  related image
    Prediction