Mechanics of Advanced Materials and Structures,
Journal Year:
2024,
Volume and Issue:
unknown, P. 1 - 17
Published: Nov. 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.
Physical review. E,
Journal Year:
2025,
Volume and Issue:
111(1)
Published: Jan. 15, 2025
Traditional
liquid
crystal
elastomer
(LCE)-based
machines
are
constrained
by
the
need
for
complex
controllers
and
large
power
supplies,
which
limits
their
applicability
in
microrobots
other
small-scale
machines.
In
this
paper,
we
propose
a
light-powered
self-scrolling
LCE
crane,
is
capable
of
to
lift
weights
under
steady
light.
Based
on
dynamic
model,
derive
lateral
curvature
crane
driving
moment
scrolling.
By
numerically
solving
equilibrium
equations,
found
that
originated
from
uneven
distribution
rod
horizontal
direction
caused
The
angular
velocity
depends
five
system
parameters:
heat
flux,
coefficient
transfer,
support
spacing,
weight
mass,
scrolling
friction
coefficient.
Through
experimental
comparative
analysis,
results
consistent
with
numerical
simulation.
device
proposed
paper
features
simple
structure,
illumination,
compact
light
irradiation
area.
It
advances
understanding
self-sustaining
structures
utilizing
active
materials
offers
valuable
insight
into
potential
applications
light-responsive
LCEs
self-driven
devices,
medical
instruments,
robotics,
sensors,
energy
sector.
locked
icon
Physics
Subject
Headings
(PhySH)Continuum
mechanicsDevicesElastic
deformation
Advanced Engineering Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 16, 2025
Self‐oscillating
systems
based
on
active
materials
offer
significant
potential
for
creating
autonomous
intelligent
machines
by
harnessing
environmental
energy
and
enabling
self‐regulation.
However,
most
such
overlook
the
viscoelastic
behavior
of
materials,
which
exhibit
both
elastic
viscous
deformation
under
load,
underscoring
importance
studying
these
effects
system
performance.
Herein,
a
liquid
crystal
elastomer
(LCE)
spring
oscillator
is
presented
its
dynamic
behaviors
are
investigated.
The
governing
equations
developed
linear
thermoviscoelastic
model.
analysis
concludes
that
has
supercritical
Hopf
bifurcation
between
static
mode
self‐oscillation
mode.
Exact
expressions
amplitude
frequency,
along
with
asymptotic
analytic
solutions,
also
provided.
Additionally,
key
parameters
influencing
frequency
self‐oscillating
examined.
Especially,
viscoelasticity
LCE
fiber
greatly
affects
point,
amplitude,
period
oscillator.
These
results
provide
convenience
guidance
various
applications,
especially
in
related
fields
as
soft
robotics,
micromechanical
systems,
harvesters.
Polymers,
Journal Year:
2025,
Volume and Issue:
17(6), P. 711 - 711
Published: March 7, 2025
Conventional
machines
often
face
limitations
due
to
complex
controllers
and
bulky
power
supplies,
which
can
hinder
their
reliability
operability.
In
contrast,
self-excited
movements
harness
energy
from
a
stable
environment
for
self-regulation.
this
study,
we
present
novel
model
of
self-rowing
boat
inspired
by
paddle
boats.
This
is
powered
liquid
crystal
elastomer
(LCE)
turntable
that
acts
as
motor
operates
under
consistent
illumination.
We
investigated
the
dynamic
behavior
uniform
illumination
integrating
photothermal
reaction
theory
LCEs
with
nonlinear
framework.
The
primary
equations
were
solved
using
fourth-order
Runge–Kutta
method.
Our
findings
reveal
exhibits
two
modes
motion
steady
illumination:
static
pattern
pattern.
transition
between
these
influenced
interaction
driving
friction
torques
generated
energy.
study
quantitatively
analyzes
fundamental
conditions
necessary
initiating
examines
how
various
dimensionless
parameters
affect
speed
system.
proposed
system
offers
several
unique
advantages,
including
simple
structure,
easy
control,
independence
electronic
components.
Furthermore,
it
has
potential
miniaturization
integration,
enhancing
its
applicability
in
miniature
systems.
Polymers,
Journal Year:
2024,
Volume and Issue:
16(16), P. 2263 - 2263
Published: Aug. 9, 2024
The
self-excited
oscillation
system,
owing
to
its
capability
of
harvesting
environmental
energy,
exhibits
immense
potential
in
diverse
fields,
such
as
micromachines,
biomedicine,
communications,
and
construction,
with
adaptability,
efficiency,
sustainability
being
highly
regarded.
Despite
the
current
interest
track
sliders
self-vibrating
systems,
LCE
fiber-propelled
face
significant
limitations
two-dime
nsional
movement,
especially
self-rotation,
necessitating
development
more
flexible
mobile
designs.
In
this
paper,
we
design
a
spatial
slider
system
which
ensures
self-rotation
propelled
by
light-fueled
fiber
on
rigid
circular
track.
A
nonlinear
dynamic
model
is
introduced
analyze
system’s
behaviors.
numerical
simulations
reveal
smooth
transition
from
static
self-rotating
states,
supported
ambient
illumination.
Quantitative
analysis
shows
that
increased
light
intensity,
contraction
coefficient,
elastic
coefficient
enhance
frequency,
while
damping
decreases
it.
radius
non-monotonic
effect.
initial
tangential
velocity
has
no
impact.
reliable
performance
under
steady
suggests
applications
periodic
motion-demanding
construction
industry
where
energy
dissipation
utilization
are
utmost
urgency.
Furthermore,
possesses
ability
rotate
self-vibrate,
it
capable
adapted
other
non-circular
curved
tracks,
thereby
highlighting
flexibility
multi-use
capabilities.
Polymers,
Journal Year:
2024,
Volume and Issue:
16(22), P. 3119 - 3119
Published: Nov. 7, 2024
Self-oscillation
enables
continuous
motion
by
transforming
constant
external
stimuli
into
mechanical
work,
eliminating
the
necessity
for
supplementary
control
systems.
This
holds
considerable
promise
in
domains
like
actuators,
wearable
devices
and
biomedicine.
In
current
study,
a
novel
suspended
liquid
crystal
elastomer
(LCEs)
ball
system
consisting
of
light-responsive
hollow
LCE
an
air
blower
is
constructed.
Stable
illumination
allows
its
periodic
oscillation.
Drawing
from
theoretical
model
conjunction
with
dynamic
model,
equations
are
established,
characteristics
explored
viewpoint.
The
numerical
calculations
suggest
that
two
patterns
present,
i.e.,
hovering
self-oscillatory
patterns.
critical
conditions
required
to
initiate
transition
between
quantified
different
parameters.
As
evidenced
outcomes,
manipulating
light
intensity,
damping
coefficient,
contraction
density,
gravitational
acceleration,
bottom
zone
height,
characteristic
coefficient
vertical
wind
speed
at
outlet
facilitates
precise
over
as
well
amplitude
frequency.
With
simple
structure,
customizable
dimensions,
remote
activation
active
manipulation,
this
may
potentially
change
design
approach
energy
harvesting,
microsensors
aerial
vehicles.
