In
this
study,
the
mechanical
characteristics
of
graded
origami
bellows
were
numerically
investigated
and
experimentally
validated.
Two
geometric
parameters
considered:
pre-folding
angle
(
θ
)
layer
height
L
e
).
The
sensitivities
deployment
process
energy
absorption
efficiency
to
variations
in
under
quasi-static
loading
dynamic
investigated.
Results
show
that
with
positive
gradients
exhibited
progressive
process.
More
than
one
deformation
mechanism
was
triggered
during
deployment,
indicating
a
mixed
non-rigid
mode.
A
large
gradient
had
notable
effect
on
efficiency.
Both
specific
SEA
mean
tensile
force
P
m
decreased
as
increased.
Although
insensitive
response,
behavior
models
indicated
both
initial
peak
affected
by
parameters.
general,
proposed
controllable
stable
response
axial
tension.
Smart Materials and Structures,
Год журнала:
2024,
Номер
33(4), С. 043002 - 043002
Опубликована: Март 2, 2024
Abstract
Structures
inspired
by
the
Kresling
origami
pattern
have
recently
emerged
as
a
foundation
for
building
functional
engineering
systems
with
versatile
characteristics
that
target
niche
applications
spanning
different
technological
fields.
Their
light
weight,
deployability,
modularity,
and
customizability
are
few
of
key
continue
to
drive
their
implementation
in
robotics,
aerospace
structures,
metamaterial
sensor
design,
switching,
actuation,
energy
harvesting
absorption,
wireless
communications,
among
many
other
examples.
This
work
aims
perform
systematic
review
literature
assess
potential
springs
structural
component
design
keeping
three
objectives
mind:
(
i
)
facilitating
future
research
summarizing
categorizing
current
literature,
ii
identifying
shortcomings
voids,
iii
proposing
directions
fill
those
voids.
International Journal of Mechanical Sciences,
Год журнала:
2024,
Номер
282, С. 109609 - 109609
Опубликована: Июль 29, 2024
Introducing
origami
with
outstanding
flexibility
into
thin-walled
tubes
can
enhance
their
energy
absorption
performance.
This
paper
first
proposes
a
cutting
and
folding-based
design
route
of
which
enables
geometry
gradients
such
as
uniform,
tapered,
hourglass-shaped,
ellipsoidal
shapes.
Subsequently,
the
finite
element
model
proposed
tube
is
established
verified
through
comparisons
experimental
results.
Numerical
simulation
results
demonstrate
that
quasi-static
capability
graded
closely
related
to
folding
angle,
total
number
layers,
Compared
conventional
octagonal
(COT),
initial
peak
force
in
experiences
dramatic
reduction,
reaching
maximum
decrement
70.75%,
while
achieving
39.96%
boost
specific
(SEA).
Moreover,
incorporation
gradient
shapes
within
facilitates
more
predictable
controlled
collapse
pattern,
leading
an
enhanced
energy-absorbing
efficiency
than
uniform
tubes.
study
provides
new
insights
balance
shape.
