2020
DOI: 10.1002/nag.3112
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Embedded discontinuity approach for coupled hydromechanical analysis of fractured porous media

Abstract: Summary In this paper, a new continuum approach for the coupled hydromechanical analysis of fractured porous media is proposed. The methodology for describing the hydraulic characteristics invokes an enriched form of Darcy's law formulated in the presence of an embedded discontinuity. The constitutive relations governing the hydromechanical response are derived by averaging the fluid pressure gradient and the discontinuous displacement fields over a selected referential volume of the material, subject to some … Show more

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Cited by 12 publications
(8 citation statements)
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“…Most of the past developments dealt with the mechanical response of a single-phase solid and focused on modeling of discrete propagation of the damage in both brittle and frictional materials. Recently, the framework has been extended to include the description of hydro-mechanical interaction [18]. The approach involves imposing a weak discontinuity in fluid pressure as well as a strong discontinuity in the displacement field within the considered referential volume.…”
Section: Governing Equations Of Hydromechanical Coupling Under Homogementioning
confidence: 99%
See 2 more Smart Citations
“…Most of the past developments dealt with the mechanical response of a single-phase solid and focused on modeling of discrete propagation of the damage in both brittle and frictional materials. Recently, the framework has been extended to include the description of hydro-mechanical interaction [18]. The approach involves imposing a weak discontinuity in fluid pressure as well as a strong discontinuity in the displacement field within the considered referential volume.…”
Section: Governing Equations Of Hydromechanical Coupling Under Homogementioning
confidence: 99%
“…Within the CLED approach, the homogenized constitutive relations governing the hydromechanical response within the referential volume adjacent to the localized region, take the form (cf. [18])…”
Section: Governing Equations Of Hydromechanical Coupling Under Homogementioning
confidence: 99%
See 1 more Smart Citation
“…Due to its importance in geology and rock engineering, the effect of microcracks on rock under various loading conditions has been widely investigated both experimentally [5,14,16,29,49,52] and numerically [5,11,13,16,18,20,22,25,26,53]. The focus in numerical modelling has been on the effect of microcracks under compression as it is the natural state of bedrock.…”
Section: Introductionmentioning
confidence: 99%
“…For this reason, FEM has been enhanced or enriched during the last two decades to better describe discontinuities. This research has resulted in two classes of enrichment methods, which are the embedded discontinuity FEM [18,40,41], or EDFEM, and the extended FEM [2,3], or XFEM. EDFEM has the computational/implementational advantage over XFEM that extra degrees of freedom related to the enrichment of the displacement field can be eliminated by static condensation.…”
Section: Introductionmentioning
confidence: 99%