Influence of crack density on geomechanical behavior of granular composites with porous grains and fluid-saturated pores

SUMMARYThe analysis of geomechanical behavior for granular systems including fluid‐filled pores depends strongly on the crack density present within the system being studied. Effective overall bulk and shear moduli are both significantly influenced by these crack system parameters. Present effort co...

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Bibliographic Details
Published in:International journal for numerical and analytical methods in geomechanics 2014-09, Vol.38 (13), p.1381-1396
Main Author: Berryman, James G.
Format: Article
Language:English
Subjects:
Applied sciences
Buildings. Public works
Computational fluid dynamics
cracked grains
Cracks
Density
Exact sciences and technology
Fluid flow
Fluids
Geomechanics
Geotechnics
Mathematical models
orthotropic anisotropy
poroelastic response
Porosity
Soil mechanics. Rocks mechanics
Strength of materials (elasticity, plasticity, buckling, etc.)
Structural analysis. Stresses
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Summary:SUMMARYThe analysis of geomechanical behavior for granular systems including fluid‐filled pores depends strongly on the crack density present within the system being studied. Effective overall bulk and shear moduli are both significantly influenced by these crack system parameters. Present effort concentrates on the geomechanical analyses needed to treat anisotropic (specifically orthotropic) poroelastic grains jumbled together to form an overall isotropic polycrystalline poroelastic material. As predicted, poroelastic effects induced by fluids in the cracks are observed to be significant for the effective bulk modulus, but simple pore fluids do not affect the magnitude of effective overall shear modulus. These results are also shown to depend in a quantitatively predictable way on crack density values. Copyright © 2014 John Wiley & Sons, Ltd.
ISSN:0363-9061
1096-9853
DOI:10.1002/nag.2263