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.
Thin-Walled Structures,
Год журнала:
2023,
Номер
193, С. 111234 - 111234
Опубликована: Сен. 27, 2023
The
mechanical
behaviour
and
energy
absorption
(EA)
of
origami
bellows
with
polygonal
cross-sections
under
quasi-static
axial
tension
were
numerically
theoretically
investigated.
finite
element
analysis
results
showed
that
the
plateau
force
increased
number
polygon
sides
N,
leading
to
increases
in
mean
tensile
(Pm)
SEA.
Two
types
basic
deployment
elements
during
process
hexagonal
cross-section
defined
two
modes,
namely
non-rigid
mode
I
II.
exhibiting
II
had
approximately
60%
greater
SEA
Pm
than
those
I.
Theoretical
predictions
for
each
derived
based
on
a
rigid,
perfectly
plastic
material
superfolding
elements.
predicted
reasonable
agreement
terms
force–displacement
history
force.
This
work
reveals
fundamental
mechanics
involved
can
facilitate
design
optimized
geometric
parameters
desired
EA
behaviour.
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.
