Journal of Physics Conference Series,
Год журнала:
2024,
Номер
2808(1), С. 012074 - 012074
Опубликована: Июль 1, 2024
Abstract
Due
to
the
high
load
and
heat
transfer
capacity,
porous
honeycomb
sandwich
structures
are
widely
in
engineering.
However,
functional
requirements,
mass
should
be
realized
which
results
perforated
holes
being
applied
structures.
The
shape
of
plays
a
crucial
role
further
improving
load-bearing
flow-resistance
performance
structure.
In
this
study,
influence
hole
on
flow
resistance,
permeability,
mechanical
properties
systematically
studied.
Five
different
shapes
with
same
area
considered,
maximum
Mises
stress
structure
under
five
conditions
calculated.
show
that
does
have
significant
structure,
especially,
it
is
especially
found
circular
has
lowest
resistance
rectangular
highest
capacity.
Smart Materials and Structures,
Год журнала:
2024,
Номер
33(9), С. 093002 - 093002
Опубликована: Июнь 13, 2024
Abstract
Recent
advancements
in
fabrication
techniques,
such
as
the
development
of
powder
metallurgy,
have
made
it
possible
to
tailor
mechanical
properties
functionally
gradient
piezoelectric
(FGP)
micro/nanostructures.
This
class
structures
can
be
used
improve
performance
many
micro/nanoelectromechanical
systems
because
their
spatially
varying
and
electrical
properties.
The
importance
FGP
micro/nanoscale
has
been
demonstrated
by
growing
number
published
works
on
size-dependent
characteristics,
including
static
bending,
buckling,
vibration,
energy
harvesters
wave
propagation
using
scale-dependent
continuum-based
models.
Reviewing
recent
developments
field
non-classical
continuum
mechanics,
this
paper
examines
analysis
porous
micro/
nanostructures.
Five
sophisticated
theories
piezoelectricity—modified
couple
stress,
strain
gradient,
surface
effect,
well
nonlocal
theory,
for
example—are
given
special
consideration
light
potential
forecast
unusual
characteristics
micro/nanostructures
devices.
In
future,
with
multi-field
couplings
may
studied
or
designed,
article
a
helpful
resource.
Nondestructive Testing And Evaluation,
Год журнала:
2024,
Номер
unknown, С. 1 - 19
Опубликована: Апрель 14, 2024
The
main
object
of
this
paper
is
to
further
extend
the
MITC4
element
analyse
free
vibration
FG
sandwich
spherical
shells
with
a
honeycomb
core
(so-called
h-FGSS
shells)
resting
on
Kerr
foundation
(KF).
originates
from
three-dimensional
continuum
description
degenerated
shell
behaviour
which
can
be
applied
both
thick
and
thin
shells.
consists
an
inner
two
different
skin
layers.
FSDT
used
due
its
simplicity
efficiency.
KF
includes
three
parameters
as
upper
springer
stiffness
(kU),
(kL),
shear
layer
(kS).
performance
accuracy
present
formulation
are
verified
through
comparative
examples.
Furthermore,
numerical
graphical
results
show
general
picture
influence
input
shells,
especially
geometrical
core.
Journal of Composite Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 9, 2024
For
the
first
time,
Levy-type
solution
model
and
state-space
concept
are
employed
to
investigate
hygrothermal
bending
response
of
a
cross-ply
laminated
plate
on
three-parameter
Kerr
foundation
subjected
2D
magnetic
field.
The
displacement
field
is
established
based
Shimpi’s
two-variable
theory.
Based
Maxwell’s
equations,
body
force
(Lorentz
force)
established.
In
present
analysis,
two
opposite
edges
simply
supported.
While,
other
have
arbitrary
boundary
conditions.
more
generality
reality,
mechanical
load,
temperature
moisture
that
applied
upper
surface
assumed
be
uniformly,
linearly,
exponentially,
sinusoidally
varied.
principle
virtual
displacements
derive
governing
partial
differential
equations
theory,
including
Lorentz
force.
Levy
procedure
obtain
nonhomogeneous
ordinary
equations.
matrix
method
utilized
get
homogeneous
solution.
particular
obtained
by
employing
undetermined
coefficients.
effects
foundation,
loading
type,
conditions,
side-to-thickness
ratio,
aspect
parameter,
temperature,
deflection
stresses
investigated.
It
noted
loads
reduce
structure’s
strength,
which
leads
an
increment
in
stresses.
Mathematics,
Год журнала:
2024,
Номер
12(21), С. 3422 - 3422
Опубликована: Окт. 31, 2024
This
paper
investigates
the
nonlinear
dynamic
deflection,
natural
frequency,
and
wave
propagation
in
functionally
graded
(FG)
porous
piezoelectric
microscale
tubes
under
periodic
load,
hygrothermal
conditions,
an
external
electric
field.
The
material
used
to
make
smart
microtubes
has
pores
that
may
be
smoothly
changed
or
uniformly
distributed
over
tube
wall.
Here,
three
types
of
porosity
distribution
are
taken
into
consideration.
motion
equations
constructed
using
a
novel
shear
deformation
beam
theory
modified
couple
stress
(MCST).
solved
fourth-order
Runge–Kutta
technique
Galerkin
approach.
effects
various
geometric
parameters,
type,
factor,
load
amplitude
length
scale
parameter,
moisture,
temperature
on
frequency
FG
explored
through
number
parametric
investigations.
Acta Mechanica,
Год журнала:
2023,
Номер
234(10), С. 5071 - 5099
Опубликована: Июль 20, 2023
Abstract
In
this
article,
the
damped
nonlinear
transient
response
of
a
smart
sandwich
plate
(SSP)
comprising
agglomerated
CNT-reinforced
porous
nanocomposite
core
with
multifunctional
magneto-piezo-elastic
(MPE)
facesheets,
subjected
to
thermal
environment,
is
numerically
investigated.
The
synergistic
influence
agglomeration,
porosity
and
pyro-coupling
on
vibration
control
studied
for
first
time
under
finite
element
framework.
attenuation
vibrations
caused
by
active
constrained
layer
damping
(ACLD)
treatment.
kinematics
based
layer-wise
shear
deformation
theory
von-Karman’s
nonlinearity.
viscoelastic
properties
ACLD
patch
CNT
agglomeration
are
mathematically
modelled
using
Golla–Hughes–McTavish
Eshelby–Mori–Tanaka
methods,
respectively.
A
comprehensive
examination
inter-related
effects
different
states,
distributions
loading
profiles
has
been
performed.
new
insights
controlling
pyro-coupled
induced
plates
supplying
voltage
directly
MPE
facesheets
without
treatment
have
discussed
thoroughly.
numerical
analysis
confirms
significant
associated
SSP.
ZAMM ‐ Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik,
Год журнала:
2023,
Номер
104(2)
Опубликована: Сен. 22, 2023
Abstract
Within
the
framework
of
consistent
couple
stress
theory
(CCST),
we
develop
a
Hermitian
C
n
(
=
1,
2)
finite
cylindrical
layer
method
(FCLM)
for
carrying
out
three‐dimensional
(3D)
analysis
size‐dependent
buckling
and
free
vibration
behaviors
simply
supported,
functionally
graded
(FG)
piezoelectric
sandwich
microshells.
The
microshells
interest
are
placed
under
closed‐circuit
surface
conditions
subjected
to
axial
compression
electric
voltages.
We
derive
3D
weak
formulation
based
on
Hamilton's
principle
this
study.
In
resulting
formulation,
microshell
is
artificially
divided
into
l
microlayers,
with
elastic
displacement
components
potential
selected
as
primary
variables.
By
incorporating
layer‐wise
kinematic
model
our
FCLM,
which
can
be
used
analyzing
FG
Each
variable
expanded
double
Fourier
series
in
in‐surface
domain
interpolated
thickness
direction
using
polynomials.
accuracy
convergence
rate
FCLMs
validated
by
comparing
solutions
they
produce
macroshells
relevant
exact
approximate
have
been
reported
literature.
material
length
scale
parameter
set
at
zero
comparison
made
macroshells.
contrast,
flexoelectric
effects
ignored
impact
some
essential
factors
critical
load,
voltage,
natural
frequency
supported
assessed.
important
identified
piezoelectricity,
flexoelectricity,
parameter,
inhomogeneity
index,
radius‐to‐thickness
ratio,
length‐to‐radius
magnitude
applied
voltage
load.
Research Square (Research Square),
Год журнала:
2024,
Номер
unknown
Опубликована: Апрель 9, 2024
Abstract
Metal
foams
represent
a
groundbreaking
generation
of
composite
materials,
distinguished
by
their
high
surface
area-to-volume
ratio
and
exceptional
properties
including
porosity,
lightweight
construction,
heightened
thermal
conductivity,
making
them
indispensable
across
industries
such
as
management,
filtration,
catalysis,
energy
storage
due
to
remarkable
versatility
performance
capabilities.
The
study
focuses
on
overcoming
challenges
in
theoretical
research
related
the
modelling
complex
structures.
It
introduces
more
accurate
approach
model
novel
tri-directionally-coated
porous
structures
with
varying
microstructures,
incorporating
intrinsic
characteristic
lengths
spatial
variations
material
properties.
examines
static
behaviour
multidirectional
functionally
graded
metal
foam
shells,
employing
higher-order
shear
deformation
theory
principle
virtual
work.
investigation
utilizes
Galerkin
method
address
various
boundary
conditions.
Two
types
categorized
Softcore
(SC)
Hardcore
(HC),
are
analyzed,
five
distribution
patterns:
tri-directional
(Type-A),
two
bidirectional
(Type-B
Type-C),
transverse
unidirectional
(Type-D),
axial
(Type-E).
