Influence of MWCNT’s waviness and aggregation factors on wave dispersion response of MWCNT-strengthened nanocomposite curved beam
Structures,
Год журнала:
2023,
Номер
53, С. 1239 - 1249
Опубликована: Май 12, 2023
Язык: Английский
Coupled Newmark beta technique and GDQ method for energy harvesting and vibration control of the piezoelectric MEMS/NEMS subjected to a blast load
Engineering Analysis with Boundary Elements,
Год журнала:
2022,
Номер
144, С. 492 - 506
Опубликована: Сен. 8, 2022
Язык: Английский
A layer-wise formulation for vibration performance of nanocomposite structure by introducing a novel viscoelastic substrate involving friction force
Mechanics of Advanced Materials and Structures,
Год журнала:
2023,
Номер
31(14), С. 2991 - 3004
Опубликована: Фев. 1, 2023
The
vibration
of
different
structural
members
is
highly
dependent
on
the
external
forces
and
environment
they
are
moving
in
it.
stiffness
mass
properties
structure
main
factors
determining
frequency
responses.
However,
situations
commonly
occur
which
structures
exposed
to
perpetual
loading
conditions.
In
present
study,
a
novel
model
for
investigating
effects
friction
between
substrate
proposed
applied
small-scale
cylindrical
structures.
this
regard,
nanocomposite
materials
made
epoxy
reinforced
by
graphene
oxide
particles
an
axial
direction
used
as
material
cylinder.
classical
formulation
elasticity
anisotropic
polar
coordinate
system
derived
presented.
Moreover,
homogeneous
evaluated
using
Halpin–Tsai
formulation.
core
idea
current
study
develop
new
concept
frictional
incorporate
into
consideration
along
with
visco-elastic
reactions.
Both
finite
element
analytical
solutions
provided
examine
parameters
vibrational
behavior
structure.
results
presented
graphs
detailed
presentation
parameters.
Язык: Английский
Dynamic insights into thermal shock response of double-layer cylinders with FGM main layer and viscoelastic holder via generalized Green-Naghdi theory
Structures,
Год журнала:
2024,
Номер
69, С. 107508 - 107508
Опубликована: Окт. 14, 2024
Язык: Английский
One-dimensional nonlinear model of generalized thermo-electroelasticity
Archive of Applied Mechanics,
Год журнала:
2023,
Номер
93(7), С. 2711 - 2734
Опубликована: Март 29, 2023
Abstract
We
investigate
a
one-dimensional
restriction
of
nonlinear
model
thermo-electroelasticity
in
extended
thermodynamics
and
the
quasi-electrostatic
regime
(see
Ghaleb
et
al.
Int
J
Eng
Sci
119:29–39,
2017.
https://doi.org/10.1016/j.ijengsci.2017.06.010
).
An
additional
dependence
thermal
conductivity
relaxation
time
on
temperature
heat
flux
is
introduced.
The
aim
present
work
to
assess
effect
some
quadratic
couplings
between
mechanical,
electric
fields.
Such
are
known
have
crucial
stability
solutions.
It
confirmed
that
there
two
speeds
wave
propagation
disturbances,
coupled
thermoelastic
wave.
Formulae
provided
for
both
speeds,
showing
their
explicit
temperature,
field.
purely
case
briefly
considered.
results
may
be
useful
description
broad
range
interactions
large
polarizable
slabs
electro-thermoelastic
materials
design
such
materials.
Язык: Английский
Application of Chebyshev collocation element method to Green-Naghdi thermoelasticity of a bi-layered media consists of FGM and viscoelastic domains
Composite Structures,
Год журнала:
2023,
Номер
319, С. 117189 - 117189
Опубликована: Июнь 2, 2023
Язык: Английский
Bending information and dynamic stability of the laminated axisymmetric nanoplate on the linear and torsional elastic substrate based on zigzag theory
Mechanics Based Design of Structures and Machines,
Год журнала:
2023,
Номер
52(5), С. 2451 - 2479
Опубликована: Март 7, 2023
In
the
current
work,
for
first
time,
bending
and
vibration
information
of
axisymmetric
thick
annular
nanoplate
made
laminated
composite
layers
is
studied.
The
structure
placed
on
Winkler-Pasternak
substrate
with
elastic
tortional
coefficients.
Initial
stress
as
an
external
load
also
considered
in
structure.
For
modeling
mechanical
deformation
layer-wise
materials,
zigzag
theory
that
its
functions
themselves
are
continues
interface
presented.
By
coupled
quasi-3D
new
refined
(Q3D-NRT)
nonlocal
strain
gradient
used
obtaining
nonclassical
governing
equations
a
general
boundary
condition
nanoplate.
Also,
static
dynamic
nanostructure,
Hamilton's,
Minimum
total
potential
energy
principles
used,
respectively.
Via
differential
quadrature
method
weighting
factors
nth-order
derivative,
aid
size-dependent
conditions
solved.
comparing
results
outputs
previous
reports,
accuracy
shown.
Язык: Английский
One-dimensional nonlinear model of generalized thermo-electroelasticity
Research Square (Research Square),
Год журнала:
2023,
Номер
unknown
Опубликована: Янв. 4, 2023
Abstract
We
investigate
a
one-dimensional
restriction
of
nonlinear
model
thermo-electroelasticity
in
extended
thermodynamics
and
the
quasi-electrostatic
regime
(see
[25]).
An
additional
dependence
thermal
conductivity
relaxation
time
on
temperature
heat
flux
is
introduced.
The
aim
present
work
to
assess
effect
some
quadratic
couplings
between
mechanical,
electric
fields.
Such
are
known
have
crucial
stability
solutions.
It
confirmed
that
there
two
speeds
wave
propagation
disturbances,
coupled
thermoelastic
wave.
Formulae
provided
for
both
speeds,
showing
their
explicit
temperature,
field.
purely
case
briefly
considered.
results
may
be
useful
description
broad
range
interactions
polarizable
materials
design
such
materials.
Язык: Английский
On the modeling of wave propagation in the multi-curved inhomogeneous system under in-plane load via a non-model-based mechanism and fully connected deep neural networks
Waves in Random and Complex Media,
Год журнала:
2023,
Номер
unknown, С. 1 - 28
Опубликована: Фев. 6, 2023
AbstractThe
deep
neural
networks
(DNNs)
technique
is
one
of
the
best
computational
methods
with
low
error.
However,
due
to
their
superior
performance,
such
as
reducing
cost
complexity,
this
kind
machine
learning
has
attracted
much
attention.
Therefore,
in
present
paper,
for
first
time,
wave-dispersion
results
an
inhomogeneous
system
are
compared
outcomes
DNN
techniques
obtaining
exact
mean
squared
error
(MSE)
parameter
future
research.
In
mathematical
modeling
section
report,
improved
three-dimension
higher-order
theory
(3D-HSDT)
considering
effect
thickness
stretching
governing
equations
multi-phase
hybrid
nanocomposites
reinforced
rectangular
microplate
been
presented.
Phase-velocity
current
micro
structure
obtained
by
employing
modified
couple
stress
(3D-MCST).
This
non-classical
model
capable
capturing
small-size
impact
on
behavior
plates.
Also,
aid
COMSOL
multiphysics
finite
element
simulation,
verified,
and
new
improving
stability
presented
studied.
Finally,
show
that
software
can
be
verified
specific
MSE
parameter.KEYWORDS:
simulationDNN3D-MCSTmulti-phase
reinforcementwave
propagation
Disclosure
statementNo
potential
conflict
interest
was
reported
author(s).
Язык: Английский
Low-velocity impact, buckling, and vibrations of the piezoelectric doubly curved system via coupled Galerkin and Newmark method
Waves in Random and Complex Media,
Год журнала:
2023,
Номер
unknown, С. 1 - 26
Опубликована: Март 17, 2023
In
the
present
study,
buckling
and
vibrational
analysis
of
a
double-curved
piezoelectric
panel
structure
under
low-velocity
impact
force
is
presented.
this
regard,
first-order
deformation
theory
shell
structures
utilized
to
approximate
displacement
shell,
linear
strain-displacement
relations
are
presented
in
constitutive
equation
small
elastic
region.
Finally,
principle
virtual
work
exploited
obtain
equations
motion
electrical
mechanical
loads.
The
complexity
loads
necessitates
using
semi-analytical
methods
obtaining
effects
different
factors
on
frequency,
contact
force,
indentation
impactor.
results
detailed
parametric
study.
Effects
moduli
elasticity
both
impactor
indenter
velocity
investigated.
As
desirable
result,
it
determined
that
certain
range
applied
external
voltage,
vibration
suppressed
completely.
Язык: Английский