Plasticity

RI Borja - Springer Berlin Heidelberg. doi, 2013 - Springer
One of the first courses I taught at Stanford was Advanced Soil Mechanics. The course title
was accurate in the beginning, but the contents gradually became more and more about …

Stabilized low-order finite elements for coupled solid-deformation/fluid-diffusion and their application to fault zone transients

JA White, RI Borja - Computer Methods in Applied Mechanics and …, 2008 - Elsevier
Finite element simulations of coupled solid-deformation/fluid-diffusion occurring in
earthquake fault zones often require high-fidelity descriptions of the spatial and temporal …

Meta-modeling game for deriving theory-consistent, microstructure-based traction–separation laws via deep reinforcement learning

K Wang, WC Sun - Computer Methods in Applied Mechanics and …, 2019 - Elsevier
This paper presents a new meta-modeling framework that employs deep reinforcement
learning (DRL) to generate mechanical constitutive models for interfaces. The constitutive …

A phase-field model of frictional shear fracture in geologic materials

F Fei, J Choo - Computer Methods in Applied Mechanics and …, 2020 - Elsevier
Geologic shear fractures such as faults and slip surfaces involve marked friction along the
discontinuities as they are subjected to significant confining pressures. This friction plays a …

Shear band in sand with spatially varying density

RI Borja, X Song, AL Rechenmacher, S Abedi… - Journal of the Mechanics …, 2013 - Elsevier
Bifurcation theory is often used to investigate the inception of a shear band in a
homogeneously deforming body. The theory predicts conjugate shear bands that have the …

Embedded strong discontinuity finite elements for fractured geomaterials with variable friction

CD Foster, RI Borja, RA Regueiro - International Journal for …, 2007 - Wiley Online Library
The strong discontinuity approach to modelling strain localization, combined with an
enhanced strain element, has been used for more than a decade to model strain localization …

Phase field modeling of frictional slip with slip weakening/strengthening under non-isothermal conditions

EC Bryant, WC Sun - Computer Methods in Applied Mechanics and …, 2021 - Elsevier
Abstract Cracks, veins, joints, faults, and ocean crusts are strong discontinuities of different
length scales that can be found in many geological formations. While the constitutive laws …

Micropolar hypoplasticity for persistent shear band in heterogeneous granular materials

J Lin, W Wu, RI Borja - Computer Methods in Applied Mechanics and …, 2015 - Elsevier
Persistent shear bands in heterogeneous materials develop progressively, rather than
instantaneously. For a meaningful capture of this deformation pattern, the band must …

Numerical modeling of injection‐induced earthquakes using laboratory‐derived friction laws

L Cueto‐Felgueroso, C Vila, D Santillán… - Water Resources …, 2018 - Wiley Online Library
Modeling injection‐induced earthquakes requires coupling porous media flow, rock
mechanics, and fault friction. Highly nonlinear laboratory‐derived constitutive laws for fault …

Thermo-poroelastic analysis of induced seismicity at the Basel enhanced geothermal system

S Andrés, D Santillán, JC Mosquera… - Sustainability, 2019 - mdpi.com
Geothermal energy has emerged as an alternative to ensure a green energy supply while
tackling climate change. Geothermal systems extract the heat stored in the Earth's crust by …