Inverse design of cylindrical curved shell metasurface for elastic wave modulation based on PSO-BP model
Thin-Walled Structures,
Год журнала:
2025,
Номер
unknown, С. 113253 - 113253
Опубликована: Март 1, 2025
Язык: Английский
Suppressing multiband Lamb wave propagation using surface-mounted curved elastic metasurfaces
Journal of Applied Physics,
Год журнала:
2025,
Номер
137(20)
Опубликована: Май 22, 2025
Vibration
control
in
engineering
structures
is
a
critical
and
common
challenge.
Acoustic
metasurfaces
offer
novel
approach
for
vibration
by
manipulating
acoustic
wave
propagation.
However,
conventional
designs
controlling
propagation
often
require
material
removal,
such
as
holes
or
slots,
which
compromise
structural
integrity
complicate
fabrication.
This
study
introduces
surface-mounted
curved
elastic
metasurface
that
effectively
suppresses
Lamb
without
modifying
the
base
material,
thereby
preserving
its
mechanical
strength.
By
modulating
transmission
path
adjusting
phase
of
transmission,
this
design
achieves
significant
amplitude
reduction
through
destructive
interferences.
Structural
dimension
optimization
enhances
suppression
across
thin
plates
beams,
providing
broadband
multiple
frequency
bands.
holds
broad
potential
manipulation
advanced
device
development.
Язык: Английский
3D printed three-dimensional elastic metamaterial with surface resonant units for low-frequency vibration isolation
Wencheng Yin,
Jian Zhu,
Zhiqiang Tong
и другие.
Virtual and Physical Prototyping,
Год журнала:
2024,
Номер
19(1)
Опубликована: Июль 26, 2024
This
study
leverages
the
high
manufacturing
freedom
of
3D
printing
technology
to
design
a
new
type
three-dimensional
elastic
metamaterial
with
surface
resonant
units.
uses
chiral
connecting
rods
and
mass
blocks
on
generate
local
resonance
effects,
achieving
omnidirectional
vibration
isolation
effects
both
low
frequency
wide
bandwidth,
also
has
certain
load-bearing
capacity.
The
mechanisms
bandgap
generation
are
illustrated
from
band
structure
modes
at
edge
bandgap.
influence
structural
geometric
parameters
material
properties
is
systematically
investigated
via
finite
element
method.
transmission
characteristics
obtained
through
simulation
experiment,
areas
achieved
two
methodologies
match
each
other
well.
Through
static
compression
tests,
compressive
abilities
metamaterials
different
frame
thicknesses
studied,
providing
theoretical
guidance
data
support
for
engineering
applications
balancing
load-bearing.
Язык: Английский
Perspectives for extraordinary elastic-wave control in non-Hermitian meta-structures
Programmable Materials,
Год журнала:
2024,
Номер
2
Опубликована: Янв. 1, 2024
Abstract
Meta-structures,
including
metamaterials
and
metasurfaces,
possess
remarkable
physical
properties
beyond
those
observed
in
natural
materials
thus
have
exhibited
unique
wave
manipulation
abilities
ranging
from
quantum
to
classical
transports.
The
past
decades
witnessed
the
explosive
development
numerous
implications
of
meta-structures
elastic-wave
control
under
Hermitian
condition.
However,
more
notably,
a
lot
recent
research
has
been
made
show
that
non-Hermitian
offer
novel
means
for
manipulation.
Non-Hermiticity
enhanced
both
accuracy
efficiency
steering
capabilities.
To
this
end,
starting
electromagnetics
acoustics,
we
mainly
review
up-to-date
progress
elastic
with
focus
on
their
extraordinary
control.
A
variety
promising
scenarios
realized
by
such
as
parity-time-symmetric
system
skin
effect,
are
summarized.
Furthermore,
perspectives
challenges
future
key
opportunities
outlined.
Язык: Английский
Robust elastic wave sensing system with disordered metasurface and deep learning
Extreme Mechanics Letters,
Год журнала:
2024,
Номер
72, С. 102224 - 102224
Опубликована: Сен. 2, 2024
Язык: Английский
Multifunctional metasurface integrating tunable microwave absorption and energy harvesting
Optics Express,
Год журнала:
2024,
Номер
32(20), С. 34855 - 34855
Опубликована: Сен. 6, 2024
In
this
paper,
a
multifunctional
composite
metasurface,
whose
height
can
be
adjusted
by
vibration,
is
proposed
to
achieve
adjustable
microwave
absorption
band
performance
and
energy
harvesting
function.
The
metasurface
composed
of
indium
tin
oxide
(ITO)
conductive
glass,
organic
1-ethyl-3-methylimidazolium
dicyanamide
[EMIm][N(CN)2]
ionic
liquid
droplets.
Research
indicates
that
the
significantly
affects
bandwidth
signal
absorption,
with
different
heights
leading
changes
in
frequency
range
bandwidth.
This
feature
allows
adapt
signals
various
frequencies.
function
are
verified
experiments.
experiments
good
agreement
simulations,
excellent
capabilities
confirmed.
study
provides
new
idea
method
for
further
research
field
harvesting.
Язык: Английский
A programmable metasurface based on acoustic black hole for real-time control of flexural waves
Journal of Applied Physics,
Год журнала:
2024,
Номер
135(13)
Опубликована: Апрель 1, 2024
The
time-modulated
active
medium
with
linear
independent
frequency
conversion
method
has
been
demonstrated
to
enable
wave
orientation
and
reconstruction.
However,
due
the
symmetric
scattering
field,
this
technique
requires
intricate
microcircuit
designs.
To
overcome
limitation,
paper
proposes
a
tunable
piezoelectric
metasurface
based
on
acoustic
black
holes
(ABHs)
redirect
flexural
reflections.
system
can
convert
an
incident
into
reflected
of
any
direction
frequency.
This
is
accomplished
through
time
modulation
sensing
signal,
which
breaks
constraints
Snell’s
law
inherent
in
traditional
designs
insensitive
amplitude.
coupling
ABH
damping
mechanism
allows
for
while
also
eliminating
influence
second
harmonic
reflection
field
simplifying
circuit.
In
addition,
demonstrates
arbitrary
angle
reflection,
focusing,
beam
splitting,
wave.
By
improving
flexibility
elastic
manipulation,
introduces
new
approach
control
waves
provides
design
that
be
employed
variety
applications
ranging
from
vibration
protection
engineering
structures
evaluation.
Язык: Английский