Numerical Modeling of Particle Breaking Process in Granular Materials: Compaction and Evolution of Size Distribution

  • Duc-Hanh NguyenEmail author
  • Emilien Azéma
  • Farhang Radjai
  • Philippe Sornay
Conference paper
Part of the Springer Series in Geomechanics and Geoengineering book series (SSGG)


The compaction of powders depends both on grain rearrangements and grain breakage. We introduce a grain fracture model prescribed in the framework of the contact dynamics method for the simulation of uniaxial compaction. We find that the grain size reduction is highly heterogeneous as a consequence of inhomogeneous stress transmission as observed in real grinding processes or in natural degradation of geomaterials. Even under high stresses, a significant fraction of grains survive whereas many grains are fully shattered. The grain size distribution tends to a power-law distribution with increasing size span. We analyze the progressive evolution of compressibility during compaction as well as the effect of grain shape and size distribution.


Grain Size Distribution Void Ratio Discrete Element Method Grain Shape Contact Dynamic 
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Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  • Duc-Hanh Nguyen
    • 1
    Email author
  • Emilien Azéma
    • 1
  • Farhang Radjai
    • 1
  • Philippe Sornay
    • 2
  1. 1.Université Montpellier 2, CNRS, LMGCMontpellierFrance
  2. 2.Commissariat à l’énergie Atomique et aux énergies Alternatives, DEN, DEC, SPUA, LCUSaint Paul lez DuranceFrance

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