Buildings,
Год журнала:
2024,
Номер
14(9), С. 2591 - 2591
Опубликована: Авг. 23, 2024
Rayleigh
waves
are
vertically
elliptical
surface
traveling
along
the
ground
surface,
which
have
been
demonstrated
to
pose
potential
damage
buildings.
However,
traditional
seismic
barriers
limitations
of
high-frequency
narrow
bandgap
or
larger
volume,
constraints
on
application
in
practical
infrastructures.
Thus,
a
new
type
metamaterial
needs
be
further
investigated
generate
wide
low-frequency
bandgaps.
Firstly,
resonator
with
three-vibrator
is
proposed
effectively
attenuate
waves.
The
attenuation
characteristics
through
theoretical
and
finite
element
methods,
respectively.
formulas
established
based
local
resonance
mass-spring
theories,
can
Subsequently,
frequency
bandgaps
calculated
by
software
COMSOL5.6
model
Floquet–Bloch
theory
ultra-low-frequency
4.68–22.01
Hz.
Finally,
transmission
spectrum
time
history
analysis
used
analyze
influences
soil
material
damping
effect
resonators.
results
indicate
that
from
4.68
Hz
22.01
10-cycle
resonators
could
Raleigh
Furthermore,
band
1.96
20
Hz,
whereas
has
little
propagation
These
show
this
mitigate
provide
reference
for
design
barrier
structures.
Mechanics of Advanced Materials and Structures,
Год журнала:
2024,
Номер
31(26), С. 7703 - 7713
Опубликована: Апрель 26, 2024
The
paper
explores
the
increasing
concern
over
environmental
vibrations
resulting
from
machine
operation
and
rail
transit.
Notably,
low-frequency
generate
surface
waves
with
characteristics
like
significant
energy
carrying
capacity,
long-distance
propagation,
slow
attenuation.
primary
challenge
in
ground
vibration
attenuation
lies
addressing
vibrations.
study
employs
finite
element
method
to
investigate
of
a
three-component
local
resonance
pile
three-dimensional
space.
analysis
delves
into
impact
unit
cell
structure's
geometry
size
on
bandgaps,
influences
period
number
Attenuation
Zones
(AZs)
are
also
discussed.
Furthermore,
comparison
is
made
regarding
performance
two-component
pile.
findings
reveal
that
appropriate
design
can
complete
bandgap.
concrete
radius,
rubber
layer
thickness,
buried
depth
significantly
affect
Rayleigh
wave
Frequency
domain
indicates
an
increase
expands
AZs
bandgap
range.
Time
demonstrates
noticeable
decrease
acceleration
amplitude
within
research
results
presented
this
offer
novel
approach
address
