Bayesian optimization of origami multi-cell tubes for energy absorption considering mixed categorical-continuous variables
Thin-Walled Structures,
Год журнала:
2024,
Номер
199, С. 111799 - 111799
Опубликована: Март 27, 2024
Multi-cell
structures
have
been
widely
utilized
in
energy-absorbing
applications
for
their
lightweight
and
superior
mechanical
properties.
However,
they
may
produce
high
peak
forces
that
are
harmful
to
occupant
safety
during
a
vehicle
collision.
In
addition,
the
naturally
formed
folding
global
bending
modes
under
axial
loads
can
significantly
restrict
capability.
this
study,
novel
origami
multi-cell
structure
is
proposed
avoid
excessive
at
same
time
guide
deformation
mode
improve
Four
cross-sectional
types
of
investigated
experimentally
numerically.
The
results
indicated
web-to-web
(W2W)
type
most
promising
energy
absorption,
while
web-to-corner
(W2C)
yield
low
excellent
our
study
cases.
To
further
exploit
potential
these
structures,
multi-objective
optimization
required
consider
conflicting
objectives
maximizing
capability
minimizing
force.
it
challenging
traditional
deal
with
continuous,
integer,
categorical
variables
simultaneously.
Therefore,
Bayesian
method
based
on
Hamming
distance
handle
mixed
categorical-continuous
optimize
tubes.
optimal
W2C
decrease
force
by
30%
keeping
similar
level
specific
compared
W2C.
Moreover,
absorption
40%
baseline
design.
Язык: Английский
A review of curved crease origami: design, analysis, and applications
Frontiers in Physics,
Год журнала:
2024,
Номер
12
Опубликована: Июль 1, 2024
Origami
structures
with
morphing
behaviours
and
unique
mechanical
properties
are
useful
in
aerospace
deployable
structures,
soft
robots
metamaterials.
Curved-crease
origami,
as
one
of
the
variants
origami
family,
has
a
curve
that
connects
two
vertices
crease
compared
to
straight
counterpart.
This
feature
couples
folding
facet
bending
during
process,
providing
versatile
design
space
metamaterials
tunable
stiffness,
multi-stability
behaviours.
However,
current
techniques
mostly
for
simple
geometries
intuitive
construction,
modelling
technique
focuses
on
using
conventional
finite
element
method,
intrinsically
complex
make
specimens
difficult
manufacture,
which
further
hinders
development
curved-crease
structures.
Thus,
it
is
valuable
review
state-of-the-art
origami.
paper
presents
methodology,
analytical
methods,
applications
over
years,
discusses
their
strengths,
identifies
future
challenges
provides
an
outlook
concept.
Язык: Английский
Crushing characteristics and energy absorption behaviour of sloped-truncated origami tube
Engineering Structures,
Год журнала:
2025,
Номер
338, С. 120608 - 120608
Опубликована: Май 24, 2025
Язык: Английский
Research on Bifurcated Origami Hydraulic Dampers for Real Road Vibration Loads
Applied Sciences,
Год журнала:
2024,
Номер
14(14), С. 6374 - 6374
Опубликована: Июль 22, 2024
Cylindrical
hydraulic
dampers
are
commonly
utilized
to
mitigate
vibrations
in
machinery
and
structural
applications.
These
devices
generally
feature
a
single
linear
stroke
often
linked
rotary
joints
handle
complex
loading
conditions.
However,
their
installation
confined
spaces,
such
as
vehicle
suspensions,
poses
considerable
difficulties.
In
this
research,
we
introduce
an
innovative
bifurcated
origami
damper
with
nonlinear
damping
capabilities.
Initially,
formulated
the
collapsible
conditional
equations
essential
for
design
of
dampers.
We
then
examined
fluid
dynamics
within
its
flow
channels,
determining
that
force
is
proportional
square
velocity.
Furthermore,
developed
motion
based
on
derived
suggested
vibration
analysis
methods
using
Runge–Kutta
approach.
For
mass-spring
system,
created
experimental
setup
performed
tests
noise
signals
recorded
from
traveling
gravel
road,
thus
validating
performance
efficacy.
Additional
tests,
which
varied
orifice
size
at
end
structure,
well
type
temperature
internal
fluid,
showed
had
more
pronounced
effect
efficiency
than
temperature.
This
confirmed
vibration-damping
effectiveness
damper.
Язык: Английский