Failure processes of cemented granular materials.

@article{Yamaguchi2020FailurePO,
  title={Failure processes of cemented granular materials.},
  author={Yuta Yamaguchi and Soumyajyoti Biswas and Takahiro Hatano and Lucas Goehring},
  journal={Physical review. E},
  year={2020},
  volume={102 5-1},
  pages={
          052903
        }
}
The mechanics of cohesive or cemented granular materials is complex, combining the heterogeneous responses of granular media, like force chains, with clearly defined material properties. Here we use a discrete element model simulation, consisting of an assemblage of elastic particles connected by softer but breakable elastic bonds, to explore how this class of material deforms and fails under uniaxial compression. We are particularly interested in the connection between the microscopic… 

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References

SHOWING 1-10 OF 95 REFERENCES

Fracture of a model cohesive granular material.

The fracture mechanisms of a model cohesive granular medium consisting of glass beads held together by solidified polymer bridges are studied, showing that its fracture toughness can be tuned over an order of magnitude by adjusting the stiffness and size of the polymer bridges.

A cohesive granular material with tunable elasticity

The possibility to finely tune the stiffness, size and shape of this simple material makes it an ideal model system for investigations on, for example, fracturing of porous rocks, seismology, or root growth in cohesive porous media.

An investigation on loose cemented granular materials via DEM analyses

This paper presents the results of a numerical study carried out by 2D discrete element method analyses on the mechanical behavior and strain localization of loose cemented granular materials. Bonds

Failure of cemented granular materials under simple compression: experiments and numerical simulations

We investigate the strength and failure properties of a model cemented granular material under simple compressive deformation. The particles are lightweight expanded clay aggregate beads coated by a

A contact model for the yielding of caked granular materials

We present a visco-elastic coupling model between caked spheres, suitable for Distinct Element Method simulations, which incorporates the different loading mechanisms (tension, shear, bending,

Computer simulation of model cohesive powders: plastic consolidation, structural changes, and elasticity under isotropic loads.

The quasistatic behavior of a simple two-dimensional model of a cohesive powder under isotropic loads is investigated by discrete element simulations. We ignore contact plasticity and focus on the

Scaling laws for the mechanics of loose and cohesive granular materials based on Baxter's sticky hard spheres.

This work conducts discrete element simulations (pfc3d) of very loose, cohesive, granular assemblies with initial configurations which are drawn from Baxter's sticky hard sphere (SHS) ensemble and finds scaling behavior of the modulus and the strength, which both scale with the cohesive contact density.

Cohesive, frictional powders: contact models for tension

The contacts between cohesive, frictional particles with sizes in the range 0.1–10 μm are the subject of this study. Discrete element model (DEM) simulations rely on realistic contact force

Yielding in a strongly aggregated colloidal gel. Part I: 2D simulations

We investigate the microstructure details and the mechanical response under uniaxial compression of a strongly aggregating colloidal dispersion. The numerical simulations account for short-range
...