Journal of Marine Science and Engineering,
Journal Year:
2023,
Volume and Issue:
11(11), P. 2070 - 2070
Published: Oct. 30, 2023
The
magnetic
suspension
damper,
which
is
based
on
technology,
receiving
more
and
attention
from
academics
as
active–passive
hybrid
damping
technology
develops.
A
new
symmetric
structure
constructed
in
this
study,
the
accuracy
of
simulation
findings
confirmed
by
contrasting
output
finite
element
with
theoretical
formulations.
On
basis
this,
how
structure,
size,
material
electromagnet
armature
affect
flux
density,
electromagnetic
force,
force
investigated.
optimization
was
performed
accordance
results,
a
produced.
results
demonstrate
that
DT4(electrical
pure
iron)
ideal
for
armatures
electromagnets.
reinforcing
ring
construction
can
be
built
up
to
increase
force.
will
greatly
increased
when
size
placement
are
right.
system
stiffness
adjustment
range
expand
at
point,
enhancing
damper’s
functionality.
This
study
offers
novel
perspectives
designing
structures
reduce
vibration
noise
various
projects
serves
guide
constructing
dampers.
Engineered Science,
Journal Year:
2023,
Volume and Issue:
unknown
Published: Jan. 1, 2023
The
Co/C
nanocomposites
toward
outstanding
electromagnetic
(EM)
microwave
absorption
were
meticulously
designed
and
prepared
by
bio-gel
method.The
Co
nanoparticles
embedded
into
the
carbon
network
constructed
agar
powder.Our
obtained
exhibited
excellent
EM
wave
performance
including
wide
bandwidth
(7.1
GHz),
thin
thickness
(1.71
mm),
light
weight
effective
absorbing
frequency.Dielectric
relaxation
at
multilayer
interfaces,
porous
biomass
materials
magnetic
are
main
sources
for
enhancing
properties.The
amorphous
in
material
prevents
condensation
oxidation
of
nanoparticles,
thus
contributing
to
generation
good
impedance
matching.On
basis
percolation
theory,
optimal
content
was
determined,
a
model
suitable
established.
Mechanics Based Design of Structures and Machines,
Journal Year:
2024,
Volume and Issue:
52(11), P. 9122 - 9143
Published: April 10, 2024
Flexoelectricity
indicates
a
unique
characteristic
of
insulators
and
dielectric
materials
that
results
in
electrical
polarization
induction
response
to
the
non-uniform
strain
gradient.
The
impact
this
property
is
bolder
on
microscale
nanoscale
rather
than
macroscale.
This
article
conducted
derive
governing
equations
motion
for
flexoelectric-multilayer
structure
evaluate
its
vibrational
behavior
various
variable
variations.
model
includes
functionally
graded
(FG)
porous
core
which
confined
between
two
flexoelectricity-based
face
sheets
at
both
sides
Vlasov
type
foundation.
To
gain
equations,
new
power
law
material
beside
Hamilton's
principle
(HP)
modified
couple
stress
theory
(MCST)
implemented.
Capturing
effects
length
scale
parameter,
different
materials,
aspect
thickness
ratios,
porosity
index,
foundation
parameter
boundary
conditions
(B.C.s)
normalized
natural
frequency
(NNF)
such
multilayer
based
novel
FG
formulation
serve
as
main
novelty
article.
According
results,
it
revealed
lateral
ratio
enhancement
causes
NNF
stiffness
reduction
model.
Furthermore,
among
all
considered
B.C.s,
simply
support
(SSSS)
clamped
(CCCC)
refer
lowest
highest
respectively.
content
recent
serves
good
source
provide
better
understanding
high
stiffness-to-weight
structures
International Journal of Thermofluids,
Journal Year:
2024,
Volume and Issue:
22, P. 100611 - 100611
Published: Feb. 16, 2024
Due
to
their
improved
mechanical
properties
and
adaptability,
microplates
with
tailored
variable
thickness
profiles
are
becoming
essential
parts
of
advanced
micro-
nanoelectromechanical
systems
(MEMS
NEMS).
This
study
conducts
a
thorough
analytical
analysis
the
vibration
thermally
loaded,
multilayer
functionally
graded
graphene
platelet-reinforced
composite
(FG-GPLRC)
linearly
or
parabolically
varying
resting
on
viscoelastic
medium
under
different
boundary
conditions.
The
Halpin-Tsai
micromechanical
model
law
mixtures
employed
calculate
effective
material
characteristics
for
various
reinforcement
distributions
in
microplate.
These
encompass
uniformly
symmetric
asymmetric
arrangements.
utilized
first-order
shear
deformation
theory
(FSDT)
conjunction
modified
strain
gradient
(MSGT)
Hamilton's
principle
generate
dynamic
governing
equations
structure,
accounting
size-dependent
effects.
resulting
afterwards
solved
using
utilization
Galerkin
technique.
enables
evaluation
proposed
solution's
correctness
precision.
impact
factors
behavior
is
investigated
through
numerical
analysis.
length
scale
parameters,
temperature
fluctuations,
distribution
profiles,
conditions,
pattern
GPL,
taper
constants
both
unidirectional
bidirectional
scenarios,
weight
fraction
GPL.
Smart Materials and Structures,
Journal Year:
2024,
Volume and Issue:
33(9), P. 093002 - 093002
Published: June 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.
