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.
Mechanics Based Design of Structures and Machines,
Год журнала:
2023,
Номер
52(7), С. 4191 - 4210
Опубликована: Июль 13, 2023
In
the
present
article,
an
analytical
model
is
proposed
to
assess
nonlinear
damping
and
frequency
curves
of
three
layered
sandwich
beams,
constituted
with
FGM
faces
viscoelastic
core
layers.
The
formulated
in
context
forced
vibration
analysis.
kinematical
developed
for
purpose
based
on
higher
order
zig-zag
theories
coupled
shear
deformation
theory
(HSDT),
employing
functions,
by
Timoshenko,
Reddy,
Touratier.
response
loss
factors
are
provided
resourcing
solution,
derived
from
harmonic
balance
technique
one
mode
Galerkin's
method.
elastic
moduli
material
described
complex
numbers
domain.
proprieties
beams
vary
gradually
along
thickness
direction,
transiting
metal
ceramic
materials.
effect
geometrical
parameters
composite
layers
studied
according
first
higher-order
theories.
Basing
model,
numerical
results
presented
study
fiber
orientation
angle
evolution
amplitude
curves.
Defence Technology,
Год журнала:
2023,
Номер
35, С. 222 - 247
Опубликована: Авг. 19, 2023
This
work
uses
refined
first-order
shear
theory
to
analyze
the
free
vibration
and
transient
responses
of
double-curved
sandwich
two-layer
shells
made
auxetic
honeycomb
core
laminated
three-phase
polymer/GNP/fiber
surface
subjected
blast
load.
Each
two
layers
that
make
up
shell
structure
is
an
sheets
polymer/GNP/fiber.
The
exterior
supported
by
a
Kerr
elastic
foundation
with
three
characteristics.
key
innovation
proposed
transverse
stresses
are
zero
at
surfaces
each
layer.
In
contrast
previous
deformation
theories,
no
correction
factor
required.
Navier's
exact
solution
was
used
treat
problem
single
title
boundary,
while
finite
element
technique
eight-node
quadrilateral
were
address
other
boundary
requirements.
To
ensure
accuracy
these
results,
thorough
comparison
employed
in
conjunction
credible
statements.
model's
edge
cases
allow
for
this
kind
analysis.
study's
findings
may
be
post-construction
evaluation
military
civil
works
structures
their
ability
sustain
explosive
loads.
addition,
also
important
basis
calculation
design
smart
materials
when
shock
waves
or
Micromachines,
Год журнала:
2023,
Номер
14(5), С. 1052 - 1052
Опубликована: Май 15, 2023
A
nonlinear
static
analysis
of
a
circular/annular
nanoplate
on
the
Winkler-Pasternak
elastic
foundation
based
nonlocal
strain
gradient
theory
is
presented
in
paper.
The
governing
equations
graphene
plate
are
derived
using
first-order
shear
deformation
(FSDT)
and
higher-order
(HSDT)
with
von
Karman
strains.
article
analyses
bilayer
foundation.
HSDT
while
providing
suitable
distribution
stress
along
thickness
FSDT
plate,
eliminating
defects
good
accuracy
without
correction
factor.
To
solve
present
study,
differential
quadratic
method
(DQM)
has
been
used.
Moreover,
to
validate
numerical
solutions,
results
were
compared
from
other
papers.
Finally,
effect
coefficient,
parameter,
geometric
dimensions,
boundary
conditions,
elasticity
maximum
non-dimensional
deflection
investigated.
In
addition,
obtained
by
have
FSDT,
importance
models
From
results,
it
can
be
observed
that
both
parameters
significant
effects
reducing
or
increasing
dimensionless
nanoplate.
load
values,
considering
coefficients
bending
nanoplates
highlighted.
Furthermore,
replacing
(considering
van
der
Waals
forces
between
layers)
single-layer
(which
same
equivalent
as
nanoplate)
not
possible
when
attempting
obtain
exact
especially
stiffness
foundations
(or
higher
loads).
underestimates
Because
performing
experiment
at
nanoscale
difficult
molecular
dynamics
simulation
also
time-consuming,
potential
application
study
expected
for
analysis,
design,
development
devices,
such
circular
gate
transistors,
etc.
Mechanics Based Design of Structures and Machines,
Год журнала:
2023,
Номер
52(6), С. 3389 - 3403
Опубликована: Апрель 27, 2023
Stability
and
vibration
control
are
major
challenges
for
applications
in
which
laminated
composite
beams
being
used.
Using
base
materials
with
higher
strength
and/or
using
appropriate
layout
orientation
the
two
potential
methods
to
improve
dynamic
performance
of
structures.
However,
significantly
increases
manufacturing
cost.
Recently,
layers/segments
Magnetorheological
(MR)
fluids
have
been
added
common
beams,
so-called
MR-laminated
beam,
characteristics
such
The
present
work
investigates
effect
applied
magnetic
field
on
response
beams.
Different
materials,
including
E-glass,
carbon
fiber,
Kevlar,
used
as
build
sandwich
beam.
hollow
spaces
beam
filled
MR
fluid
fabricate
a
testing
sample
experimental
purposes.
A
modified
layerwise
theory,
N-layer,
has
determine
It
is
concluded
that
applying
natural
frequency
In
fact,
1400-Gauss
fields
low-cost
material
like
E-glass
provides
same
fiber-carbon
without
fields.
