International Journal of Engineering Technology and Sciences,
Journal Year:
2020,
Volume and Issue:
7(2), P. 42 - 54
Published: Sept. 23, 2020
Nanotube
(such
as
carbon
and
boron
nitride
nanotubes)
is
a
key
component
of
modern
technology
applications
nanostructures
due
to
their
unique
mechanical,
electrical,
physical
characteristics
such
high
elasticity
modulus,
suitable
heat
transfer,
electrical
conductivity.
Carbon
nanotubes
are
among
the
promising
choices
in
nano-fluidic,
gas
storage,
drug
delivery
systems
hollow
cylindrical
shape
appropriate
chemical,
properties.
Thermal
vibration
assessment
should
be
conducted
on
fluid-conveying
since
effect
thermal
fluctuations
mechanical
nanostructure
significant.
Previous
studies
have
revealed
that
when
taken
into
account,
quantum
effects
can
become
extremely
important
nanoscale
electronics
structures.
Hence,
present
review
focuses
mostly
previous
work
dynamical
size-dependent
non-local
strain
gradient
theory
nanotubes.
Furthermore,
special
effort
made
address
recent
rare
investigations
environment,
well
concerns
Mathematics,
Journal Year:
2025,
Volume and Issue:
13(9), P. 1518 - 1518
Published: May 5, 2025
Dynamic
post-buckling
behavior
of
microscale
cylindrical
shells
reinforced
with
functionally
graded
carbon
nanotubes
(FG-CNTs)
and
conveying
microfluid
is
discussed
for
the
first
time.
The
microshell
embedded
in
a
Kerr
foundation
subjected
to
an
axial
compressive
load
two-dimensional
magnetic
field
effect.
CNTs
dispersion
across
shell
thickness
follows
power
law,
five
distribution
types
developed.
modified
couple
stress
theory
applied
incorporate
small-size
effect
using
single
material
parameter.
Furthermore,
Knudsen
number
used
address
on
microfluid.
external
force
between
fluid
modeled
by
applying
Navier–Stokes
equation
depending
velocity.
Nonlinear
motion
equations
present
model
are
derived
Hamilton’s
principle,
containing
Lorentz
force.
According
Galerkin
method,
transformed
into
algebraic
system
be
solved,
determining
paths.
Numerical
results
indicate
that
presence
field,
CNT
reinforcement,
flow
improves
load-bearing
performance
microshells.
Also,
many
new
parametric
effects
curves
FG-CNT
microshells
have
been
discovered,
including
geometry,
direction,
length
scale
parameter,
number,
types.
World Journal of Engineering,
Journal Year:
2025,
Volume and Issue:
unknown
Published: May 6, 2025
Purpose
The
problem
of
controlling
the
vibration
produced
by
flow
fluids
within
pipes
is
discussed.
This
paper
aims
to
study
pipe
response
because
addition
a
spring
and
damper
as
method
fixing
observe
effect
this
on
deflection
these
pipes.
Design/methodology/approach
crack
in
various
regions
dimensions
was
investigated.
results
were
obtained
deriving
differential
equations
with
without
cracks
for
different
types
fixations
(cantilever
fixed
from
one
edge
other
edges).
Findings
natural
frequency
mode
are
analytically
determined.
To
conclude,
show
that
damping
decreases
amount
pipes,
which
leads
significant
increase
stability
during
flow.
Practical
implications
research
helps
improve
structural
integrity
encourages
innovation
design,
thereby
improving
safety
maintenance.
Originality/value
After
adding
damper,
reduces
46%,
38%
40%
pressures
(5,10,15)
bar,
respectively.
