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Mechanisms of Deformation in Porous Rocks at the Grain Scale

  • Martin Tjioe
  • Ronaldo I. BorjaEmail author
Conference paper
  • 1.6k Downloads
Part of the Springer Series in Geomechanics and Geoengineering book series (SSGG)

Abstract

This paper investigates two dominant pore-scale deformation mechanisms in porous rocks: crystal plasticity and micro-fracture generation. Modeling and simulation are conducted on the mesoscopic scale, defined as a scale smaller than the specimen but larger than the grain. Imperfections are introduced in the form of random voids and random crystal orientations. Depending on the imposed overall deformation, the overall stress response could vary dramatically with assumed pore-scale mechanisms.

Keywords

Slip System Volumetric Strain Crystal Plasticity Frictional Resistance Porous Rock 
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Notes

Acknowledgments

This material is based upon work supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Geosciences Research Program, under Award Number DE-FG02-03ER15454. Support for the first author is provided in part by the Stanford Graduate Fellowship (SGF).

References

  1. Borja RI, Wren JR (1993) Discrete micromechanics of elastoplastic crystals. Int J Numer Meth Eng 36(22):3815–3840CrossRefzbMATHGoogle Scholar
  2. Borja RI, Rahmani H (2012) Computational aspects of elasto-plastic deformation in polycrystalline solids. J Appl Mech 79(3):031024CrossRefGoogle Scholar
  3. Borja RI, Regueiro RA (2001) Strain localization of frictional materials exhibiting displacement jumps. Comput Meth Appl Mech Eng 190(20–21):2555–2580CrossRefzbMATHGoogle Scholar
  4. Foster CD, Borja RI, Regueiro RA (2007) Embedded strong discontinuity finite elements for fractured geomaterials with variable friction. Int J Numer Meth Eng 72(5):549–581CrossRefMathSciNetzbMATHGoogle Scholar
  5. Tjioe M, Rahmani H, Borja RI (2012) Pore-scale deformation in high-porosity rocks. ARMA/NARMS 12-670Google Scholar

Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  1. 1.Department of Civil and Environmental EngineeringStanford UniversityStanfordUSA

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