Thin-Walled Structures,
Journal Year:
2024,
Volume and Issue:
200, P. 111981 - 111981
Published: May 7, 2024
The
deformation
process
and
energy
absorption
of
metal
wire
mesh
tubes
under
quasi-static
expanding
by
a
hemispherical-cylindrical
indenter
were
investigated
experimental
tests,
finite
element
(FE)
simulations
analytical
modelling.
Stainless
steel
aluminum
alloy
tested
on
an
MTS
universal
testing
machine
at
speed
10
mm/min.
effects
cell
size
friction
coefficient
the
force
specific
(SEA)
examined
FE
analysis
reveals
that
combination
cross
section
dimension
governs
equal
overall
(diameter
length)
masses.
In
general,
decrease
cells
with
constant
height-to-width
ratios
leads
to
increase
mainly
due
increased
number
within
deformed
region.
An
is
also
achieved
when
reduced
only
decreasing
height.
maximum
predicted
proposed
model
expanded
tube
agrees
well
results
simulations.
Mechanics of Advanced Materials and Structures,
Journal Year:
2024,
Volume and Issue:
unknown, P. 1 - 21
Published: March 14, 2024
A
new
square
hierarchical
multicellular
tube
design
is
introduced,
and
the
crashworthiness
of
various
tubes
with
identical
wall
thickness
mass
systematically
analyzed
using
validated
numerical
models.
The
study
explores
impact
parameters
such
as
layer
level,
thickness,
load
angle
on
structure's
resistance.
Additionally,
resistance
compared
to
that
conventional
same
thickness.
findings
reveal
proposed
effectively
mitigates
peak
crushing
forces
enhances
force
efficiency
under
mass.
Specifically,
third-order
(SHMT-3)
exhibits
a
48.23%
increase
in
specific
energy
absorption
75.14%
improvement
efficiency.
Notably,
decreases
by
15.40%
tube.
Under
crush
SHMT-3
reaches
89.51%,
marking
125.21%
Overall,
comprehensive
surpasses
traditional
tubes.
These
results
contribute
valuable
insights
for
innovatively
designing
structures.
Thin-Walled Structures,
Journal Year:
2024,
Volume and Issue:
199, P. 111799 - 111799
Published: March 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.
Mechanics of Advanced Materials and Structures,
Journal Year:
2025,
Volume and Issue:
unknown, P. 1 - 22
Published: Jan. 11, 2025
This
study
innovatively
combines
Fourier
curves
with
circular
tube
design
and
proposes
a
novel
corrugated
multi-cellular
structure
(NCMTS),
aiming
to
improve
crashworthiness.
The
accuracy
of
the
finite
element
model
was
validated
through
axial
quasi-static
compression
tests.
influence
mechanism
different
structural
parameter
combinations
on
energy
absorption
capacity
NCMTS
further
investigated.
results
reveal
that
EA
increases
monotonically
rising
ru,
notable
acceleration
in
growth
rate
as
Rc
is
elevated.
Notably,
combination
larger
values
ru
Rc,
tout
tc
can
significantly
crashworthiness
performance.
Moreover,
appropriately
increasing
C1
C
increase
by
approximately
50%.
Through
multi-objective
optimization
analysis
utilizing
global
response
surface
method,
optimal
parameters
for
were
identified:
at
=
0.68,
−0.57,
0.16,
2.0
mm,
EA,
SEA
IPCF
reached
7.02
kJ,
15.33
kJ/kg
400
kN
respectively.
offers
valuable
guidance
high-performance
collision
energy-absorbing
structures.
Mechanics of Advanced Materials and Structures,
Journal Year:
2024,
Volume and Issue:
unknown, P. 1 - 17
Published: April 1, 2024
Bionic
gradient
hierarchy
design
as
a
method
that
can
effectively
improve
the
structural
crashworthiness,
but
its
current
research
only
focuses
on
symmetric
fractal
related
to
discussion.
In
view
of
this,
this
article
carries
out
innovative
and
asymmetric
tree-like
structure
(ATFGHS).
The
results
show
crashworthiness
be
greatly
improved
by
using
method.
Specifically,
ATFGHS-P3
showed
98%
increase
in
energy
absorption
(EA),
specific
(SEA),
an
84%
crush
force
efficiency
(CFE)
compared
conventional
hexagonal
multicellular
tube.
completion
study
provides
valuable
insights
into
optimization
novel
lightweight
thin-walled
energy-absorbing
structures.
Mechanics of Advanced Materials and Structures,
Journal Year:
2024,
Volume and Issue:
unknown, P. 1 - 12
Published: July 27, 2024
Considering
the
crashworthiness
and
lightweight
of
battery-pack
enclosure
structure
(BPE),
this
article
demonstrates
multi-objective
optimization
design
BPE
subjected
to
extrusion
conditions
by
using
a
validated
numerical
model
an
analytical
approach.
is
made
with
unique
combination
three
materials:
high-strength
steel
(HSS)
surrounding
enclosure,
aluminum
below
carbon
fiber-reinforced
polymer
(CFRP)
upper
enclosure.
First,
constitutive
material
was
determined
based
on
results
obtained
in
testing,
meanwhile,
structural
analysis
initial
performed
published
experimental
data.
Second,
contribution
method
modified
TOPSIS
(MTOPSIS)
adopted
screen
parameters
optimal
structure.
Based
this,
mass
maximum
deformation
are
employed
as
objectives
establish
mathematical
model.
Furthermore,
improved
particle
swarm
(IMOPSO)
has
been
exerted
algorithm
conduct
design,
show
better
level
fitting
ability.
Finally,
performance
comparison
before
after
can
be
significantly,
while
ensured.
Mechanics of Advanced Materials and Structures,
Journal Year:
2024,
Volume and Issue:
unknown, P. 1 - 15
Published: Aug. 4, 2024
A
new
type
of
bi-double
square
gradient
hierarchical
tube
(DSGHT)
is
proposed,
and
its
crashworthiness
under
consistent
wall
thickness
analyzed.
The
results
show
that
the
energy
absorption
(EA),
specific
(SEA),
crush
force
efficiency
(CFE)
DSGHT3
are
increased
by
1305.14%,
430.14%,
469.50%,
respectively,
compared
to
DSGHT0.
combination
double
tubes
laminar
design
effectively
enhances
structure.
parametric
study
indicates
increasing
significantly
improves
crashworthiness,
with
EA,
SEA,
CFE
improvements
805.75%,
125.83%,
126.83%,
at
a
0.8
mm
0.2
mm.
However,
effect
distribution
on
structural
minimal.
Conversely,
ratio
inner
outer
edge
length
(δ)
impacts
crashworthiness;
SEA
increase
37.77%
37.35%,
when
δ
6/12
8/12.
Finally,
was
other
hierarchical,
tree-shaped
fractal
structures,
it
demonstrated
superior
crashworthiness.
Specifically,
has
35.32%
34.29%
higher
CFE,
MSTL2-2.
Mechanics of Advanced Materials and Structures,
Journal Year:
2024,
Volume and Issue:
unknown, P. 1 - 16
Published: Aug. 6, 2024
Drawing
inspiration
from
nature's
hierarchical
organization,
we
propose
a
novel
bio-inspired
multi-cellular
circular
tubes
(BHMC)
with
fractal
structure.
Using
an
experimentally
validated
LS-DYNA
finite
element
model,
investigated
the
impact
resistance
of
this
structure
under
axial
loading.
Numerical
analysis
was
conducted
to
explore
energy
absorption
performance
BHMC
varying
numbers
branches,
orders,
and
tube
masses.
The
numerical
findings
indicate
that
specific
(SEA)
increases
higher
orders.
Specifically,
SEA
2nd
order
surpasses
conventional
multicellular
single-layer
by
approximately
35.07%
17.10%,
respectively.
Optimal
is
achieved
proposed
featuring
tree
branching
(N
=
6)
characteristics,
yielding
highest
across
different
parameters.
These
results
offer
valuable
insights
for
designing
bilayer
superior
efficiency,
providing
effective
guideline
structural
optimization.
Mechanics Based Design of Structures and Machines,
Journal Year:
2025,
Volume and Issue:
unknown, P. 1 - 28
Published: Jan. 19, 2025
This
paper
presents
an
innovative
design
approach
for
a
square
multicellular
tube,
incorporating
the
concepts
of
gradient
hierarchical
and
tree
fractals.
The
involves
simultaneous
development
inner
outer
parts
tube
with
hierarchies,
resulting
in
transverse
double
right-angle
fractal
(TDGHMST).
Ten
different
cross-section
schemes
are
proposed,
finite
element
model
is
developed
using
Abaqus/Explicit
to
analyze
energy
absorption
characteristics
under
axial
impact.
Comparing
crashworthiness
indexes
orders
TDGHMST
structures,
findings
reveal
that
third-order
double-gradient
tubes
exhibit
significantly
higher
capacity
crushing
force
efficiency
than
lower-order
tubes.
Moreover,
performance
substantially
improved,
regardless
wall
thickness
or
mass
condition.
also
investigates
effect
edge
length
(L1)
variation
on
structural
crashworthiness.
In
addition,
analyses
geometrical
parameters,
including
(t)
aspect
ratio
(H/L),
conducted,
demonstrating
their
significant
impact
gradient-layered
tube.
Finally,
through
comparative
studies
other
tubes,
superior
proposed
dual-gradient
verified.
These
research
results
provide
valuable
guidance
practical
application
thin-walled
structures
optimal
