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Modeling Porous Granular Aggregates

  • R. Affes
  • V. Topin
  • J.-Y. Delenne
  • Y. Monerie
  • F. Radjaї
Conference paper
Part of the Springer Series in Geomechanics and Geoengineering book series (SSGG, volume 11)

Abstract

We rely on 3D simulations based on the Lattice Element Method (LEM) to analyze the failure of porous granular aggregates under tensile loading. We investigate crack growth by considering the number of broken bonds in the particle phase as a function of the matrix volume fraction and particle-matrix adhesion. Three regimes are evidenced, corresponding to no particle damage, particle abrasion and particle fragmentation, respectively. We also show that the probability density of strong stresses falls off exponentially at high particle volume fractions where a percolating network of jammed particles occurs. Decreasing the matrix volume fraction leads to increasingly broader stress distribution and hence a higher stress concentration. Our findings are in agreement with 2D results previously reported in the literature.

Keywords

Damage Stress transmission Rheology Cemented granular materials Lattice element method 

References

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Copyright information

© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  • R. Affes
    • 1
    • 2
  • V. Topin
    • 2
    • 3
  • J.-Y. Delenne
    • 1
    • 2
  • Y. Monerie
    • 2
    • 3
  • F. Radjaї
    • 1
    • 2
  1. 1.LMGCCNRS-Université Montpellier IIMontpellier CedexFrance
  2. 2.Laboratoire MISTIRSN-CNRS-Université Montpellier 2MontpellierFrance
  3. 3.IRSN, DPAM, CE CadaracheSt. Paul-lez-Durance CedexFrance

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