Proceedings of the Institution of Mechanical Engineers Part D Journal of Automobile Engineering,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 13, 2024
Thin-walled
tubes
are
widely
used
in
vehicle
engineering
due
to
their
exceptional
energy
absorption
capabilities.
This
study
presents
a
series
of
multi-segment
tapered
(MSTs)
characterized
by
varying
connection
angles
and
segment
counts.
The
MSTs
designed
establishing
different
(α)
between
adjacent
segments.
A
finite
element
(FE)
model
was
developed
simulate
axial
impact
loading,
which
subsequently
validated
using
the
simplified
super-folded
(SSFE)
theory.
crashworthiness
with
analyzed.
following
conclusions
were
drawn:
(1)
When
α
exceeds
10°,
an
increase
leads
gradual
decline
efficiency
MSTs,
resulting
“descending”
load-displacement
curve;
(2)
less
than
0°
exhibit
greater
tendency
buckle
under
load
demonstrate
more
rapid
response
external
forces;
(3)
Compared
corrugated
straight
tubes,
configuration
featuring
=
−30°
+30°,
consisting
three
segments
cone
angle
7.5°
(designated
as
MST3-7.5),
significantly
enhances
specific
(SEA)
reduces
initial
peak
crushing
force
(IPCF).
Mechanics of Advanced Materials and Structures,
Год журнала:
2025,
Номер
unknown, С. 1 - 18
Опубликована: Март 2, 2025
This
study
presents
both
numerical
and
experimental
investigations
into
adhesively
bonded
bio-inspired
composite/aluminum
hybrid
structures
under
quasi-static
lateral
loading.
Benefiting
from
predictions
utilizing
a
CZM-based
simulation
for
the
adhesives
well-known
damage
model
composites,
research
highlights
adhesive
bonding
as
method
joining
aluminum
composite
materials,
aiming
to
achieving
desirable
energy
absorption
behavior
prior
failure
in
connection
without
heterogeneous
deformation
of
structure
especially
given
limitations
composites.
In
this
study,
novel
was
designed
inspired
Tendon
numerically
analyzed
two
different
configurations.
Buildings,
Год журнала:
2025,
Номер
15(4), С. 620 - 620
Опубликована: Фев. 17, 2025
Thin-walled
structures
are
extensively
utilized
in
construction
because
of
their
lightweight
nature
and
excellent
energy
absorption
efficiency,
especially
under
dynamic
loads.
Improving
the
energy-absorbing
performance
thin-walled
by
inspiring
natural
multi-cell
designs
is
a
sufficient
approach.
This
paper
investigates
characteristics
variable
novel
cross-section
subjected
to
oblique
impact
loading.
Straight
tapered
types
with
seven
cross-sectional
were
studied.
The
nonlinear
ABAQUS/Explicit
software
6.13
version
was
implemented
analyze
crashworthiness
behaviors
for
proposed
different
loading
angles.
crushing
examined
various
wall
thicknesses
0.5
mm,
1.5
2.5
mm
angles
0°,
15°,
30°,
45°.
It
determined
that
can
be
efficiently
controlled
varying
two
geometries
designs.
A
multi-criteria
decision-making
method
(MCDM)
using
complex
proportional
assessment
(COPRAS)
performed
select
optimum
shown
square
structure
thickness
had
best
performances
(EA)
11.01
kJ
specific
(SEA)
20.32
kJ/kg
30°
angle.
Moreover,
results
indicated
EA
decreased
increase
In
addition,
angle,
peak
force
(PCF)
reflected
reduction
absorbed
at
larger
MCDM
conjunction
COPRAS
proposed;
it
provides
valuable
insights
safer
more
resilient
building
construction.
International Journal of Polymer Science,
Год журнала:
2025,
Номер
2025(1)
Опубликована: Янв. 1, 2025
This
study
introduces
a
novel
approach
to
enhancing
the
mechanical
performance
of
3D‐printed
acrylonitrile
butadiene
styrene
(ABS)
thin‐walled
circular
tubes
by
incorporating
varying
percentages
glass
fibers
and
filling
them
with
different
types
polyurethane
(PU)
foam.
Leveraging
fused
filament
fabrication
(FFF),
were
reinforced
(0%,
5%,
10%,
15%)
injected
soft,
semisoft,
rigid
PU
foams
assess
their
impact
on
compressive
strength
crush
behavior.
The
experimental
results
revealed
significant
improvements
in
both
failure
force
energy
absorption
addition
Notably,
increasing
fiber
content
10%
transformed
brittle
into
more
ductile
behavior,
while
inclusion
foam
further
elevated
structural
strength.
optimal
configuration,
comprising
foam,
achieved
remarkable
3232.61
N
crushing
resistance
755.52
N.
Conversely,
weakest
was
observed
samples
15%
no
underscoring
critical
balance
between
reinforcement
material
composition.
Crucially,
SEM
analysis
provided
insights
microstructural
behavior
samples,
revealing
strong
bonding
ABS
matrix,
as
well
tube
walls.
images
also
highlighted
transition
from
modes,
particularly
content.
research
demonstrates
that
strategic
combination
foams,
coupled
detailed
analysis,
can
significantly
enhance
integrity
components.
These
findings
pave
way
for
development
lightweight,
high‐strength
materials
suitable
demanding
applications
aerospace,
automotive,
engineering.
Polymers,
Год журнала:
2025,
Номер
17(3), С. 315 - 315
Опубликована: Янв. 24, 2025
The
recycling
of
resources
is
an
important
measure
to
achieve
circular
economy
and
sustainable
development.
In
this
paper,
a
filled
structure
was
proposed
realized
by
combining
recycled
empty
beverage
cans
with
eco-friendly
multi-cell
fillers.
Quasi-static
axial
compressions
were
carried
out
characterize
the
energy
absorption
performance
synergistic
effect
tubes.
Experimental
results
showed
that
crashworthiness
structures
varied
both
filling
densities
materials.
With
increase
in
density,
specific
tubes
presented
upward
trend.
variation
materials,
exhibited
different
performances.
PLA
tube
could
withstand
larger
external
force
higher
SEA
values,
maximum
value
9.64
J/g.
PLAS
excellent
loading
stability
lower
ULC
value,
minimum
10%.
These
findings
provided
valuable
insights
for
designing
novel
structures.
Mathematics and Mechanics of Solids,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 21, 2025
Auxetic
metamaterial
systems
have
garnered
significant
attention
for
their
unique
properties
and
potential
applications.
This
study
aims
to
address
a
fundamental
question
concerning
the
suitability
of
spring
model
in
accurately
describing
behavior
disk
bar
system.
A
comprehensive
analytical
derivation
spring-mass
finite-element
formulation
disk-bar
has
been
carried
out.
The
efficacy
capture
effective
properties,
dispersion
relations,
band
gap
is
compared
with
numerical
simulation
results
metamaterial.
Varying
local
structural
parameter
allows
independent
attainment
negative
mass
modulus,
frequency
ranges
can
be
adjusted
desired
range.
Current
findings
shed
light
on
effectiveness
as
predictive
tool
such
complex
provide
valuable
insights
into
structures.
Ultimately,
this
research
contributes
designing
engineering
structures
tailored
characteristics,
promising
new
avenues
application
diverse
fields.
