Frontiers in Physics,
Journal Year:
2023,
Volume and Issue:
11
Published: Dec. 13, 2023
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.
Chinese Journal of Aeronautics,
Journal Year:
2024,
Volume and Issue:
unknown
Published: May 1, 2024
Inflatable
deployable
structures
inspired
by
origami
have
significant
applications
in
space
missions
such
as
solar
arrays
and
antennas.
In
this
paper,
a
generalized
Miura-ori
tubular
cell
(GMTC)
is
presented
the
basic
to
design
family
of
inflatable
with
targeted
configuration.
First,
classification
rigid
foldable
degree-4
vertices
studied
thoroughly.
Since
proposed
GMTC
comprised
forming
units
(FU)
linking
(LU),
types
FUs
LUs
are
investigated
based
on
vertices,
respectively.
The
foldability
studying
kinematics
LUs.
Volume
analyzed
investigate
multistable
configurations
cell.
variations
volume
offer
great
potential
for
developing
structure.
Design
method
parametric
optimization
structure
configuration
proposed.
feasibility
approach
validated
approximation
four
different
cases,
namely
parabolic,
semicircular,
trapezoidal,
straight-arc
hybrid
structures.
Journal of Sandwich Structures & Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 21, 2024
Nowadays,
composite
sandwich
tubes
are
extensively
utilized
in
the
civil
and
aerospace
industries
due
to
their
superior
strength-to-weight
mechanical
properties.
Origami-based
core
offers
a
large
enhancement
of
properties,
yet
little
study
research
focuses
on
effect
various
foldcore
configurations
transverse
properties
tubes,
necessitating
design
method
for
applications.
This
introduces
an
innovative
approach
by
incorporating
origami
into
enhance
energy
absorption
capacity.
The
quasi-static
carbon
fibre-reinforced
polymer
(CFRP)
with
foldcores
studied
under
three-point
bending-like
local
compression
structural
compression.
A
systematic
geometric
framework
numerical
modelling
technique
provided.
By
integrating
finite
element
analysis
experiments,
investigates
effects
parameters
experiment
setup
is
provided
tubular
specimens
full-diamond
configuration
as
foldcore.
cylindrical
(foldcore)
structures
were
manufactured
using
four
plies
[0°]
4
T700
(T300)
woven
CFRP
hot
press
moulding
(vacuum
bag
female
male
moulds)
respectively.
Then,
parametric
damage
mode
eight
different
patterns
(axial
Miura,
circumferential
diamond,
Kresling,
curved-creased
counterparts)
studied.
results
showed
performance
tube
Miura-pattern
over
origami-pattern
counterparts,
nested
tube,
traditional
honeycomb
or
aluminium-made
cores.
Therefore,
optimisation
Miura
pattern
was
carried
out
Response
Surface
(RSM)
strategy
increasing
capacity
found.
findings
offer
guidance
designing
high-specific
future
advanced
engineering
Frontiers in Physics,
Journal Year:
2023,
Volume and Issue:
11
Published: Dec. 13, 2023
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.
