A coupled thermo-hygro-mechanical peridynamic model for mechanism analysis of soil desiccation cracking
Computers and Geotechnics,
Journal Year:
2025,
Volume and Issue:
180, P. 107073 - 107073
Published: Jan. 25, 2025
Language: Английский
A fully Coupled thermal-hydrodynamic–chemical numerical model for simulating gas hydrate-bearing sediments dissociation based on peridynamic differential operator method
Computers and Geotechnics,
Journal Year:
2025,
Volume and Issue:
180, P. 107099 - 107099
Published: Feb. 4, 2025
Language: Английский
Peridynamic analysis of thermal behaviour of PCM composites for heat storage
Computer Methods in Applied Mechanics and Engineering,
Journal Year:
2024,
Volume and Issue:
424, P. 116905 - 116905
Published: March 10, 2024
One
possibility
to
utilize
excess
energy
from
electricity
generation
or
other
industrial
processes
is
use
thermal
storage
systems
based
on
phase
change
materials
(PCM).
These
can
accumulate
and
release
significant
amounts
of
heat
during
the
transitions.
The
volume
properties
PCM
undergo
rapid
changes
transitions,
creating
strong
physical
non-linearities
geometric
discontinuities.
Describing
this
complexity
with
local
formulations
processes,
i.e.,
differential
equations,
makes
numerical
solutions
corresponding
problems
challenging.
This
paper
presents
a
approach
for
analysis
such
physically
complicated
Peridynamics.
illustrated
by
modelling
analysing
behaviour
PCM.
computational
challenges
associated
simulating
composite
structures
large
differences
in
conductivity
their
components
are
addressed
investigating
influence
different
types
peridynamic
kernels
implementation.
results
demonstrate
that
solution
significantly
influenced
definition
average
bonds.
proposed
framework
provides
base
developing
precise
thermo-hydro-mechanical
description
composites
fully
represent
complex
systems.
Language: Английский
Modelling the frost cracking behavior in clayey soils: A peridynamic approach
Computers and Geotechnics,
Journal Year:
2024,
Volume and Issue:
176, P. 106765 - 106765
Published: Sept. 28, 2024
Language: Английский
Semi-analytical predictive model for natural and artificial thawing of circular ground-ice walls
Computers and Geotechnics,
Journal Year:
2024,
Volume and Issue:
171, P. 106394 - 106394
Published: May 11, 2024
Artificial
ground
freezing
(AGF)
is
a
improvement
technique
enabling
the
construction
of
underground
structures
in
challenging
geological
conditions.
After
constructing
an
structure
within
ground-ice
cofferdam,
soil
undergoes
thawing
process
that
can
impact
stability
and
waterproofing
properties
lining.
Minimizing
or
preventing
potential
damage,
as
well
avoiding
delays
construction,
be
achieved
through
rational
design
regimes.
In
this
paper,
we
present
semi-analytical
model
for
thermal
behavior
ice-wall
during
its
natural
artificial
thawing.
The
described
by
three
independent
one-dimensional
mathematical
problems:
outer
surface
ice
wall,
inner
surface,
soils
around
freeze
pipes
(in
case
thawing).
proposed
approach
facilitates
calculation
times
power
required
efficiency
demonstrated
comparison
with
numerical
simulation
results.
This
makes
suitable
desirable
engineering
practice.
Importantly,
allows
seamless
analysis
several
combinations
influencing
factors
to
select
parameters
aligned
requirements
different
projects.
Language: Английский
Simulation of Frost-Heave Failure of Air-Entrained Concrete Based on Thermal–Hydraulic–Mechanical Coupling Model
Materials,
Journal Year:
2024,
Volume and Issue:
17(15), P. 3727 - 3727
Published: July 27, 2024
The
internal
pore
structural
characteristics
and
microbubble
distribution
features
of
concrete
have
a
significant
impact
on
its
frost
resistance,
but
their
size
is
relatively
small
compared
to
aggregates,
making
them
difficult
visually
represent
in
the
mesoscopic
numerical
model
concrete.
Therefore,
based
ice-crystal
phase
transition
mechanism
water
theory
fine-scale
inclusions,
this
paper
establishes
an
estimation
for
effective
thermal
conductivity
permeability
coefficients
that
can
reflect
content
microbubbles
porous
media
explores
evolution
during
freezing
process.
segmented
Gaussian
integration
method
adopted
calculation
integrals
involving
curves.
In
addition,
concept
fracture
represents
continuous
damage,
switching
coefficient
proposed
address
fundamental
cracking
permeability.
Finally,
models
are
applied
cement
mortar
interface
zone
(ITZ),
thermal–hydraulic–mechanical
coupling
finite
element
specimens
at
mesoscale
phase-field
established.
After
that,
frost-cracking
ordinary
samples
process
explored,
as
well
relieving
pressure
adverse
effect
accelerated
cooling
cracking.
results
show
cracks
first
occurred
near
aggregate
sample
surface
then
extended
inward
along
zone,
which
consistent
with
scenario
structures
cold
regions.
Language: Английский