A
novel
integrated
composite
laminate
(ICL)
with
embedded
macro-fiber
composites
(MFCs)
is
proposed
to
improve
the
vibration
reduction
performance
of
thin-walled
structures.
Its
dynamic
modeling
and
active
suppression
are
investigated.
The
structure
can
not
only
achieve
good
but
also
provide
protection
for
MFCs,
while
related
experimental
studies
rarely
reported
in
published
works.
This
paper
proposes
a
general
method
ICL
MFCs.
Considering
piezoelectric
effect
MFC
material,
semi-analytical
model
established
by
combining
first-order
shear
deformation
theory
Lagrange
equation.
On
this
basis,
state-space
equation
control
calculation
design
Proportional-Integral-Derivative
(PID)
controller
given.
Furthermore,
preparation
specimen
MFCs
introduced,
an
system
capable
testing
built.
comparative
results
simulations
experiments
demonstrate
accuracy
approach
effectiveness
capability
structure.
Finally,
effects
fiber
distribution
angle
on
structural
modal
characteristics
damping
investigated,
influence
laws
skin
plate
thickness
PID
parameters
revealed.
findings
new
technical
Journal of Vibration and Control,
Год журнала:
2024,
Номер
unknown
Опубликована: Май 7, 2024
The
study
investigated
the
steady
state
response
of
a
piezoelectric
pipe
conveying
fluid
under
external
and
internal
resonances
in
supercritical
regime
velocity.
Internal
resonance
conditions
between
first
second
frequency
modes
were
studied
at
specific
flow
velocity
regime.
Galerkin
method
multiple
scale
used
to
extract
vibration
amplitude
versus
excitation
amplitude.
solutions
lost
stability
through
saddle-node
Hopf
bifurcations,
leading
periodic,
double
multi-periodic,
chaotic
behaviors
forced
curves.
Time
response,
FFT,
phase
portrait,
Lyapunov
exponents
presented
predict
unstable
regions
piezo-pipe
system
points.
Wolf
algorithm
was
utilized
evaluate
exponents.
Additionally,
fuzzy
terminal
sliding
mode
controller
designed
region
fluid,
its
parameters
optimized
using
genetic
algorithm.
effectively
stabilized
motion
system,
demonstrating
better
performance
than
control
numerical
results.
