Polymers,
Год журнала:
2024,
Номер
16(22), С. 3192 - 3192
Опубликована: Ноя. 17, 2024
Self-oscillation
is
the
phenomenon
in
which
a
system
generates
spontaneous,
consistent
periodic
motion
response
to
steady
external
stimulus,
making
it
highly
suitable
for
applications
soft
robotics,
motors,
and
mechatronic
devices.
In
this
paper,
we
present
self-oscillator
based
on
liquid
crystal
elastomer
(LCE)
fiber
under
constant
voltage.
The
primarily
consists
of
an
LCE-liquid
metal
(LCE-LM)
composite
fiber,
mass
sphere,
straight
rod
featuring
both
conductive
insulating
segments.
Building
upon
established
dynamic
LCE
model,
derive
governing
equations.
Numerical
calculations
reveal
two
distinct
regimes:
static
regime
self-oscillation
regime.
Furthermore,
provide
temporal
behavior
curves
electrothermal-induced
contraction
tensile
force,
phase
trajectories
variation
equivalent
driving
force
damping
force.
These
detailed
studies
elucidate
that
results
from
electrothermal-responsive
LCE-LM
when
circuit
activated,
with
continuous
being
sustained
through
interplay
between
sphere
self-controlled
circuit.
We
also
investigate
threshold
conditions
necessary
initiating
self-oscillation,
as
well
key
parameters
influence
its
frequency
amplitude.
Our
demonstrates
improved
stability
by
reducing
effects
gravity
other
disturbances.
Additionally,
curved
trajectory
can
be
achieved
replacing
one,
resulting
more
flexible
easily
controllable
structure.
Given
these
characteristics,
may
ideal
creating
monitoring
warning
devices,
systems,
integrating
actuators
controllers.
Mechanics of Advanced Materials and Structures,
Год журнала:
2024,
Номер
unknown, С. 1 - 17
Опубликована: Ноя. 11, 2024
Self-sustained
movement
has
the
ability
to
absorb
energy
from
external
environment
maintain
its
own
movement.
In
present
work,
a
self-sustained
chaotic
simple
pendulum
system
featuring
an
electrothermal
responsive
liquid
crystal
elastomers
fiber
and
mass
ball
is
proposed
examined.
The
power-on
state
achieved
in
through
infusion
of
metal
into
this
fiber.
Which
enables
shrink,
feeding
compensate
for
dissipation
resulting
damping,
thus
allowing
On
basis
existing
dynamic
elastomer
model,
governing
equations
are
established,
behavior
under
stimulation
theoretically
explored.
Numerical
findings
suggest
that
presents
three
different
patterns,
namely
stationary
pattern,
oscillatory
pattern.
Moreover,
five
parameters
elastic
coefficient,
viscosity
gravitational
acceleration,
shrinkage
coefficient
strength
work
can
contribute
better
understanding
systems
driven
by
materials
offer
guidance
further
exploration
applications
such
as
chaos
machine,
mind-brain
analysis.
Polymers,
Год журнала:
2024,
Номер
16(24), С. 3520 - 3520
Опубликована: Дек. 18, 2024
In
recent
years,
there
have
been
many
studies
focused
on
improving
the
performance
of
active
materials;
however,
applying
these
materials
to
machines
still
presents
significant
challenges.
this
study,
we
introduce
a
light-powered
self-translation
system
for
an
asymmetric
friction
slider
using
liquid
crystal
elastomer
(LCE)
string
oscillator.
The
was
composed
hollow
slide,
two
LCE
fibers,
and
mass
ball.
Through
evolution
photothermal-induced
contraction,
derived
governing
equations
system.
Numerical
simulations
revealed
distinct
motion
modes:
static
mode
mode.
As
ball
moved,
fibers
alternated
between
illuminated
non-illuminated
states,
allowing
them
effectively
harvest
light
energy
compensate
dissipation
within
Unlike
traditional
self-oscillating
systems
that
oscillate
around
fixed
position,
enabled
advance
continuously
through
oscillator’s
symmetric
self-sustained
oscillation.
Furthermore,
explored
critical
conditions
necessary
initiating
as
well
key
parameters
influence
frequency
amplitude
oscillator
average
speed
slider.
This
system,
with
its
simple
design
ease
control,
holds
promising
potential
applications
in
various
fields
including
soft
robotics,
harvesting,
machinery.
Polymers,
Год журнала:
2024,
Номер
16(22), С. 3192 - 3192
Опубликована: Ноя. 17, 2024
Self-oscillation
is
the
phenomenon
in
which
a
system
generates
spontaneous,
consistent
periodic
motion
response
to
steady
external
stimulus,
making
it
highly
suitable
for
applications
soft
robotics,
motors,
and
mechatronic
devices.
In
this
paper,
we
present
self-oscillator
based
on
liquid
crystal
elastomer
(LCE)
fiber
under
constant
voltage.
The
primarily
consists
of
an
LCE-liquid
metal
(LCE-LM)
composite
fiber,
mass
sphere,
straight
rod
featuring
both
conductive
insulating
segments.
Building
upon
established
dynamic
LCE
model,
derive
governing
equations.
Numerical
calculations
reveal
two
distinct
regimes:
static
regime
self-oscillation
regime.
Furthermore,
provide
temporal
behavior
curves
electrothermal-induced
contraction
tensile
force,
phase
trajectories
variation
equivalent
driving
force
damping
force.
These
detailed
studies
elucidate
that
results
from
electrothermal-responsive
LCE-LM
when
circuit
activated,
with
continuous
being
sustained
through
interplay
between
sphere
self-controlled
circuit.
We
also
investigate
threshold
conditions
necessary
initiating
self-oscillation,
as
well
key
parameters
influence
its
frequency
amplitude.
Our
demonstrates
improved
stability
by
reducing
effects
gravity
other
disturbances.
Additionally,
curved
trajectory
can
be
achieved
replacing
one,
resulting
more
flexible
easily
controllable
structure.
Given
these
characteristics,
may
ideal
creating
monitoring
warning
devices,
systems,
integrating
actuators
controllers.
