An efficient phase-field model of shear fractures using deviatoric stress split

We propose a phase-field model of shear fractures using the deviatoric stress decomposition. This choice allows us to use general three-dimensional Mohr–Coulomb’s failure function for formulating the relations and evaluating peak and residual stresses. We apply the model to a few benchmark problems...

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Bibliographic Details
Published in:Computational mechanics 2023-12, Vol.72 (6), p.1263-1278
Main Authors: Haghighat, Ehsan, Santillán, David
Format: Article
Language:English
Subjects:
Boundary conditions
Classical and Continuum Physics
Computational Science and Engineering
Crack propagation
Decomposition
Energy
Engineering
Failure modes
Fault lines
Fractures
Geomechanics
Localization
Mechanics
Mohr-Coulomb theory
Original Paper
Residual stress
Shear
Slope stability
Strain localization
Theoretical and Applied Mechanics
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Summary:We propose a phase-field model of shear fractures using the deviatoric stress decomposition. This choice allows us to use general three-dimensional Mohr–Coulomb’s failure function for formulating the relations and evaluating peak and residual stresses. We apply the model to a few benchmark problems of shear fracture and strain localization and report remarkable performance. Our model is able to capture conjugate failure modes under biaxial compression test and for the slope stability problem, a challenging task for most models of geomechanics.
ISSN:0178-7675
1432-0924
DOI:10.1007/s00466-023-02348-1