Variational Phase‐Field Fracture Approach in Reactive Porous Media
International Journal for Numerical Methods in Engineering,
Год журнала:
2025,
Номер
126(1)
Опубликована: Янв. 3, 2025
ABSTRACT
We
present
a
comprehensive
model
to
simulate
fracture
nucleation
and
propagation
in
porous
media,
incorporating
chemical
reactions.
This
integrates
three
main
processes:
fluid
flow
reactive
transport,
the
mechanical
deformation
of
fractured
media
using
variational
phase‐field
approach.
To
account
for
reactions,
we
use
geochemical
package
PHREEQC,
coupled
with
finite‐element
transport
solver
(OpenGeoSys),
reactions
both
thermodynamic
equilibrium
kinetically,
considering
changes
porosity.
represent
damage,
introduce
variable
that
ranges
from
intact
material
fully
damaged
material.
accounts
porosity
as
result
separate
damage
represented
by
variable.
test
our
through
various
examples
showcase
its
ability
capture
driven
Our
is
implemented
within
open‐source
finite
element
framework
OpenGeoSys.
Язык: Английский
An adaptive mesh refinement algorithm for stress-based phase field fracture models for heterogeneous media: Application using FEniCS to ice-rock cliff failures
Finite Elements in Analysis and Design,
Год журнала:
2025,
Номер
244, С. 104311 - 104311
Опубликована: Янв. 14, 2025
Язык: Английский
Phase field approach for managing multi-fragment interactions in load-bearing fractured media
International Journal of Fracture,
Год журнала:
2025,
Номер
250(1), С. 1 - 17
Опубликована: Фев. 24, 2025
Abstract
This
work
introduces
a
novel
approach
for
characterizing
the
residual
load
bearing
capacity
of
fractured
components
based
on
Phase
Field
fracture
model.
The
underlying
idea
involves
exploiting
this
well-established
framework
fracturing
materials
and
applying
it
to
mechanically
loaded
domains
in
which
has
already
occurred.
Hence,
continuous
phase
field
here
portrays
smeared
representation
known
crack
patterns,
unilateral
contact
interactions
between
lips
are
enforced
through
suitable
strain
energy
decomposition.
allows
theoretically
robust
implicit
treatment
originally
discontinuous
problem
while
remaining
continuum
framework.
As
such,
proposed
avoids
numerically
challenging
definition
management
conventional
pairs,
thus
proving
be
especially
promising
its
application
with
multiple
fragments.
Besides
presenting
theoretical
foundation
algorithmic
convenience
approach,
accuracy
representativeness
proven
against
predictions
numerical
results
from
Finite
Element
models
featuring
interactions.
Язык: Английский
A comparative study of the Representative Crack Element method and the Star-convex approach within phase-field fracture modeling
Engineering Fracture Mechanics,
Год журнала:
2025,
Номер
unknown, С. 111041 - 111041
Опубликована: Март 1, 2025
Язык: Английский
Stress-constrained versus fracture-based topology optimization: A comparative study
Computer Methods in Applied Mechanics and Engineering,
Год журнала:
2025,
Номер
441, С. 117949 - 117949
Опубликована: Апрель 9, 2025
Язык: Английский
On modeling fracture of soft polymers
Mechanics of Materials,
Год журнала:
2025,
Номер
unknown, С. 105346 - 105346
Опубликована: Апрель 1, 2025
Язык: Английский
Nucleation of fracture: The first-octant evidence against classical variational phase-field models
Journal of Applied Mechanics,
Год журнала:
2024,
Номер
92(1)
Опубликована: Ноя. 14, 2024
Abstract
As
a
companion
work
to
[1],
this
article
presents
series
of
simple
formulae
and
explicit
results
that
illustrate
highlight
why
classical
variational
phase-field
models
cannot
possibly
predict
fracture
nucleation
in
elastic
brittle
materials.
The
focus
is
on
“tension-dominated”
problems
where
all
principal
stresses
are
nonnegative,
is,
taking
place
entirely
within
the
first
octant
space
stresses.
Язык: Английский