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Title: A Time-Dependent Directional Damage Theory for Brittle Rocks Considering the Kinetics of Microcrack Growth

Journal Article · · Rock Mechanics and Rock Engineering

In this work, a novel microcrack damage theory for describing the time-dependent behavior of brittle rocks is proposed. Instead of using scalar or tensorial variables to approximate the effect of microcracks, the concept of directional damage is introduced by upscaling the directional distribution density of microcracks through the noninteracting homogenization scheme. The contribution of an individual crack on global strain is first derived from the crack-opening displacements including sliding, closure, and dilation. The model is then cast in the free energy form, and the range of parameters ensuring compliance with the second law of thermodynamics is derived rigorously. Considering that the subcritical propagation of microcracks is the dominant mechanism behind the time-dependent deformation and failure of brittle rocks, the driving force for directional damage is defined as the corresponding energy release rate, and the effect of time is introduced through a damage evolution law inspired from the kinetics of subcritical crack growth. The model is applied to simulate the behavior of basalt rock under various loading conditions. In addition to predicting the stress–strain–time response, the model offers enhanced resolution in representing the anisotropic characteristics of microcrack-induced damage in brittle rocks and their time-dependent evolutions.

Research Organization:
Univ. of Colorado, Boulder, CO (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
NE0008771; 7556334
OSTI ID:
1842330
Journal Information:
Rock Mechanics and Rock Engineering, Vol. 55, Issue 5; ISSN 0723-2632
Publisher:
SpringerCopyright Statement
Country of Publication:
United States
Language:
English

References (77)

Crack velocity functions and thresholds in brittle solids journal January 1990
A nonlinear creep damage model for salt rock journal August 2018
The shear strength of rock joints in theory and practice journal December 1977
Coupled damage and plasticity models derived from energy and dissipation potentials journal April 2007
A microcrack-based continuous damage model for brittle geomaterials journal October 2000
Thermodynamics of the quasi-static growth of Griffith cracks journal April 1978
A microcrack model of rock inelasticity part I: Frictional sliding on microcracks journal January 1982
Sliding crack model for nonlinearity and hysteresis in the uniaxial stress–strain curve of rock journal June 2012
A micro-macro model for time-dependent behavior of clayey rocks due to anisotropic propagation of microcracks journal June 2015
A microstructural study of natural and experimentally induced cracks in a granodiorite journal January 2005
Characterizing Excavation Damaged Zone and Stability of Pressurized Lined Rock Caverns for Underground Compressed Air Energy Storage journal September 2012
Velocity and Attenuation of Seismic Waves in Two‐Phase Media: part i. Theoretical Formulations journal October 1974
Micro-Macro Analysis and Phenomenological Modelling of Salt Viscous Damage and Application to Salt Caverns journal September 2015
Nonlinear stress-strain curves for solids containing closed cracks with friction journal January 1998
Pore structure model for elastic wave velocities in fluid-saturated sandstones: PORE STRUCTURE MODEL FOR WAVE VELOCITIES journal July 2012
Time-dependent cracking and brittle creep in crustal rocks: A review journal July 2013
On energy-based coupled elastoplastic damage theories: Constitutive modeling and computational aspects journal January 1989
Continuous hyperplastic critical state (CHCS) model journal January 2004
A thermodynamic consistent damage and healing model for self healing materials journal July 2011
Homogenization-based analysis of anisotropic damage in brittle materials with unilateral effect and interactions between microcracks: HOMOGENIZATION-BASED ANALYSIS
  • Zhu, Q. Z.; Kondo, D.; Shao, J. F.
  • International Journal for Numerical and Analytical Methods in Geomechanics, Vol. 33, Issue 6 https://doi.org/10.1002/nag.741
journal September 2008
Distribution of directional data and fabric tensors journal January 1984
Description de l'�tat de fissuration d'une roche � partir d'essais non-destructifs simples journal September 1971
Evidence for a Long-Term Strength Threshold in Crystalline Rock journal March 2010
Micro-macro mechanics of damage and healing in rocks journal January 2020
Crack growth in brittle solids under compression journal July 1998
A model for non-linear rock deformation under compression due to sub-critical crack growth journal November 1991
Influence of crack surface friction on crack initiation and propagation: A numerical investigation based on extended finite element method journal April 2016
Triaxial creep tests and back analysis of time-dependent behavior of Siah Bisheh cavern by 3-Dimensional Distinct Element Method journal January 2011
The effect of cracks on the uniaxial elastic compression of rocks journal January 1965
Micromechanics-based prediction of creep failure of hard rock for long-term safety of high-level radioactive waste disposal system journal March 2003
Subcritical crack growth, surface energy, fracture toughness, stick-slip and embrittlement journal September 1985
A Novel Method for Determining the Crack Closure Stress of Brittle Rocks Subjected to Compression journal May 2020
A micromechanical model for concrete in compression journal January 1988
Brittle Failure in Compression: Splitting, Faulting and Brittle-Ductile Transition journal September 1986
A rate-dependent breakage model based on the kinetics of crack growth at the grain scale journal November 2017
Excavation-induced relaxation effects and hydraulic conductivity variations in the surrounding rocks of a large-scale underground powerhouse cavern system journal June 2015
Effects of temperature and stress on the time-dependent behavior of Beishan granite journal March 2017
Brittle creep in basalt and its application to time-dependent volcano deformation journal July 2011
Crack initiation stress in low porosity crystalline and sedimentary rocks journal February 2013
The effects of confining pressure and stress difference on static fatigue of granite journal January 1980
Dilatancy in the fracture of crystalline rocks journal August 1966
Influences of pore pressure on short-term and creep mechanical behavior of red sandstone journal September 2014
Time-dependent strength degradation of granite journal October 2009
Laboratory tests and numerical simulations of brittle marble and squeezing schist at Jinping II hydropower station, China journal March 2011
Subcritical crack growth and other time- and environment-dependent behavior in crustal rocks journal June 1984
Coupled thermo-hydro-mechanical processes in the near field of a high-level radioactive waste repository in clay formations journal January 2012
Velocity-porosity relationships in oceanic basalt from eastern flank of the Juan de Fuca Ridge: The effect of crack closure on seismic velocity journal March 2008
Damage Mechanics with Fabric Tensors journal August 2006
Micromechanics of rock damage: Advances in the quasi-brittle field journal February 2017
The effect of cracks on the compressibility of rock journal January 1965
Crack growth and development during creep of Barre granite journal February 1979
A Model of Damage and Healing Coupling Halite Thermo-mechanical Behavior to Microstructure Evolution journal June 2014
FE analysis of time-dependent behavior of tunneling in squeezing ground using two different creep models journal May 2005
A Microcrack Model of Dilatancy in Brittle Materials journal March 1988
Modeling of anisotropic damage and creep deformation in brittle rocks journal June 2006
A thermodynamically consistent model accounting for viscoplastic creep and anisotropic damage in unsaturated rocks journal June 2017
Micromechanics of faulting in westerly granite journal April 1982
Micromechanics of brittle creep in rocks: MICROMECHANICS OF BRITTLE CREEP journal August 2012
The progressive fracture of Lac du Bonnet granite journal December 1994
Investigation of Macroscopic Brittle Creep Failure Caused by Microcrack Growth Under Step Loading and Unloading in Rocks journal March 2016
Subcritical crack growth in geological materials journal June 1984
Mechanical behavior and failure analysis of fracture-filled gneissic granite journal August 2020
A microcrack growth-based constitutive model for evaluating transient shear properties during brittle creep of rocks journal May 2018
Sliding Crack Model for Nonlinearity and Hysteresis in the Triaxial Stress‐Strain Curve of Rock, and Application to Antigorite Deformation journal October 2020
A molecular interpretation of stress corrosion in silica journal February 1982
The effect of spatial distribution on the effective behavior of composite materials and cracked media journal December 1995
The failure of brittle solids containing small cracks under compressive stress states journal March 1986
The effect of water on the time-dependent deformation and fracture of a granite journal August 1987
Damage tensors and the crack density distribution journal January 1993
Breakage mechanics for granular materials in surface-reactive environments journal March 2018
Overall moduli of solids with microcracks: Load-induced anisotropy journal January 1983
Static Fatigue of Glass. I journal November 1958
Nonlinear elasticity and stress-induced anisotropy in rock journal February 1996
Changes in crack aspect-ratio concentration from heat treatment: A comparison between velocity inversion and experimental data journal July 2008
An investigation of the mechanics of rock joints—Part I. Laboratory investigation journal June 1993
Failure Mechanisms and Evolution Assessment of the Excavation Damaged Zones in a Large-Scale and Deeply Buried Underground Powerhouse journal March 2017
A rate-dependent stochastic damage–plasticity model for quasi-brittle materials journal December 2014

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