Thermoelastic buckling analysis of plates and shells of temperature and porosity dependent functionally graded materials
Mechanics of Time-Dependent Materials,
Год журнала:
2023,
Номер
28(3), С. 817 - 859
Опубликована: Ноя. 8, 2023
Язык: Английский
Nonlinear fully-coupled thermoelastic analysis of bidirectional porous functionally graded doubly-curved shell panels with optimum material distribution
Mechanics of Advanced Materials and Structures,
Год журнала:
2023,
Номер
31(25), С. 6643 - 6675
Опубликована: Июль 21, 2023
This
work
focuses
on
the
nonlinear
fully-coupled
thermoelastic
solutions
of
bidirectional
porous
functionally
graded
doubly-curved
panels
under
uniform-pressure
and
heat-flux.
The
material
properties
are
assumed
to
vary
in
x-y
directions
achieved
using
multivariable
power-law
based
Voigt's
scheme.
Three
types
porosity
distribution
(even,
uneven,
cosine)
considered
for
analysis.
model
is
developed,
considering
cubic-polynomial
temperature-dependent
higher-order
Green-Lagrange
kinematics.
developed
extended
potential-energy
principle
2D-isoparametric
finite-element
approximations
via
Picard's
iterative
Two-way
coupling
deflection
temperature
responses
adopted
estimate
thermomechanical
behavior.
Here,
effects
curvature
ratio,
power-law,
indices
longitudinal/transverse/out-of-plane
deflections,
temperature-profile
demonstrated.
Additionally,
optimum
material-distributions
obtained
response
surface
method
by
minimizing
responses.
Mixed
hardening/softening
nonlinearity
behaviors
FGM
curved
observed
coupled
Язык: Английский
Large deflection response of functionally graded porous structures considering geometrical nonlinearity using an improved FSDT
Mechanics Based Design of Structures and Machines,
Год журнала:
2024,
Номер
unknown, С. 1 - 24
Опубликована: Янв. 23, 2024
This
study's
objective
is
to
propose
a
full
3D
finite
element
modeling
for
examining
the
geometrically
nonlinear
(NL)
response
of
functionally
graded
(FG)
porous
materials
with
plates,
ring,
and
cylindrical
shapes.
An
improved
first-order
shear
deformation
theory
(IFSDT)
utilized
in
order
develop
solid-shell
element.
The
governing
equations
are
developed
way
that
offers
parabolic
distribution
transverse
strains
through
FG
shell
thickness
zero
condition
stresses
on
top
bottom
surfaces.
given
IFSDT
has
ability
model
any
kind
structures
incorporates
material
law.
In
this
study,
two
types
porosity
functions
considered.
effectiveness
present
demonstrated
linear
(L)
NL
numerical
examples.
effect
distribution,
coefficient,
power-law
index,
geometrical
design
parameters,
boundary
conditions
shells
evaluated.
Язык: Английский
Functionally graded thick-walled tubes analysis by numerical methods
Heliyon,
Год журнала:
2024,
Номер
10(5), С. e27309 - e27309
Опубликована: Март 1, 2024
Functionally
graded
materials
are
increasingly
used
in
the
practice
of
engineering
design,
as
is
case
with
thick-walled
tubes.
The
use
these
constructive
elements
requires
a
calculation,
which
should
be
accurate,
accessible
and
fast
possible.
present
work
responds
to
requirements.
For
calculation
tubes
thick
walls
made
functionally
materials,
two
new
ways
were
used,
based
on
concepts
multilayer
(material)
wall
equivalent
material.
multi-layered
concept
considers
tube
several
layers,
well-known
plates,
material
homogeneous
isotropic
material,
but
fictitious
properties,
behavior
influence
Poisson's
ratio
illustrated
by
some
comparative
results.
development
calculus,
validation
models
analysis
results
numerical
calculus
using
finite
element
method.
transverse
plane
model,
axial-symmetric
model
3D
longitudinal
variants
regarding
fineness
mesh.
paper
also
analyzes
Poisson
variation,
compared
adopting
constant
value.
study,
useful
specialists
designers
structures
this
type,
they
have
high
degree
generality
openings
for
other
methods.
Язык: Английский
Finite element analysis of a generalized rotating FGM vessel subjected to thermo-mechanical loadings: Effect of Poisson ratio and inhomogeneity parameters
Heliyon,
Год журнала:
2024,
Номер
10(11), С. e31833 - e31833
Опубликована: Май 24, 2024
Cylinders
and
thick
walled
cylindrical
shells
are
commonly
utilized
in
several
industries
to
transport
store
fluids
under
certain
pressure
temperature
conditions.
In
the
present
paper,
a
numerical
solution
is
developed
order
investigate
displacement,
stress
fields
rotating
vessel
made
of
generalized
functionally
graded
material
(FGM)
subjected
different
thermo-mechanical
boundary
The
aim
effect
Poisson
ratio,
internal
inhomogeneity
parameters
on
deformation
distributions
vessel.
considered
isotropic
nonhomogeneous
linearly
elastic
with
its
properties
varying
along
radial
direction.
Additionally,
conditions,
such
as
exterior
or
interior
problems
where
r
→
∞
0,
respectively,
impossible
resolve
using
variation
attributes
power-law
distribution.
An
approach
spatial
Young
modulus
distribution
that
more
broad
has
been
suggested
literature
which
can
be
applied
physical
challenges.
rotation
analysis,
assumed
non-uniform.
Since
an
analytical
differential
equation
not
accessible,
conventional
Galerkin
discretization
Finite
Element
Method
(FEM)
applied,
nowadays
one
main
tools
for
solving
Boundary
Value
Problems
(BVP).
It
addressed
how
stress,
strain,
displacement
affected
by
parameter,
speed,
pressure,
temperature,
ratio.
examination
various
findings
indicates
changes
profile,
rotation,
parameter
thermoelastic
field
have
substantial
impact
strain
FGM
cylinder.
indicate
ratio
significant
distributions.
According
results,
above-mentioned
adapted
control
filed
research
offers
perspectives
development
enhancement
vessels
intended
high-temperature
applications.
Язык: Английский
Investigation of the nonlinear dynamics of thin sandwich shells composed of functionally graded materials with double curvature in thermal environments
Thin-Walled Structures,
Год журнала:
2024,
Номер
205, С. 112530 - 112530
Опубликована: Окт. 5, 2024
Язык: Английский
Transient heat transfer analysis of the porous nonhomogeneous material structure
International Journal of Advances in Engineering Sciences and Applied Mathematics,
Год журнала:
2023,
Номер
15(2-3), С. 72 - 81
Опубликована: Июнь 22, 2023
Язык: Английский
Large-amplitude vibration analysis of FG rectangular plates under rapid cooling
Mechanics Based Design of Structures and Machines,
Год журнала:
2023,
Номер
unknown, С. 1 - 17
Опубликована: Дек. 28, 2023
In
the
present
research,
large-amplitude
vibration
behavior
of
rectangular
plates
subjected
to
cooling
shock
is
investigated
based
on
a
numerical
solution
approach.
It
considered
that
are
made
functionally
graded
materials
as
mixture
stainless
steel
and
low-carbon
steel.
The
thermoelastic
properties
also
temperature-dependent
which
estimated
available
experimental
data.
According
Mindlin
plate
theory,
nonlinear
governing
equations
motion
together
with
corresponding
boundary
conditions
derived.
temperature
profile
obtained
one-dimensional
Fourier-type
transient
heat
conduction
equation.
Moreover,
two
time-dependent
thermal
loading
scenarios
for
plate’s
top
face
considered.
To
solve
problem
numerically,
well-known
generalized
differential
quadrature
technique
used
discretization
considering
Chebyshev–Gauss–Lobatto
grid.
addition,
traced
in
time
by
Newmark’s
integration
scheme.
After
showing
validity
developed
approach,
parametric
study
presented
investigate
stress
changes
along
thickness
effects
load
rapidity
time,
geometry,
magnitude
load,
material
vibrations
various
sudden
decrease
temperature.
concluded
has
significant
role
vibrational
distribution
plate.
Язык: Английский