Effect of curvature angle and structural configurations on dynamic performance of honeycomb sandwich structures
Mechanics of Advanced Materials and Structures,
Journal Year:
2025,
Volume and Issue:
unknown, P. 1 - 22
Published: Jan. 15, 2025
The
aim
of
this
study
is
to
investigate
the
effects
curve
angle
and
structural
parameters
on
ballistic
performance
honeycomb
sandwich
structures.
In
study,
high-velocity
impact
simulations
were
performed
in
LS
DYNA
finite
element
program
parameters,
angle,
residual
velocity,
specific
energy
absorption
(SEA)
damage
mechanism.
Progressive
analysis
based
combination
cohesive
zone
model
(CZM)
bilinear
traction-separation
law
was
performed.
limit
value
increased
by
41.9%
when
facesheet
thickness
two
times.
When
cell
wall
five
times,
13.3%.
core
height
times
increased,
velocity
2.076
Although
CFRP
Facesheet
Aluminum
(Al)
structure
7.14%
lower
than
all
Al
specimen,
SEA
9.47%
higher.
increases
from
0˚
180˚,
decreases
22.8%.
general,
provides
useful
information
about
design
structures,
affecting
their
effects.
Language: Английский
Prediction of impact behavior of notched composite pipes repaired with different composite patches by machine learning algorithms
Journal of Adhesion Science and Technology,
Journal Year:
2025,
Volume and Issue:
unknown, P. 1 - 38
Published: Feb. 5, 2025
Language: Английский
Understanding the Damage Mechanisms of Basalt/Carbon Fiber Hybrid Composites Under Quasi-Static and Dynamic Loadings
Polymers,
Journal Year:
2025,
Volume and Issue:
17(7), P. 866 - 866
Published: March 24, 2025
This
work
investigates
the
hybrid
fiber
sequence
effect
on
flexural
and
impact
properties
of
basalt/carbon
epoxy
composites.
In
present
study,
six
configurations
composite
laminates
were
fabricated
by
vacuum-assisted
resin
transfer
method
tested
in
three-point
bending
Charpy
tests.
The
results
show
that
composites
outperform
pure
basalt
or
carbon
laminates.
maximum
strength
modulus,
such
as
[C2B4C2],
realized
for
with
fibers
outer
layers
because
rigidity
carbon.
However,
higher
energy
absorption
was
offered
basalt-rich
their
ductility.
Among
hybrids,
a
balanced
stacking
like
[C4B4]
[B2C4B2]
showed
an
optimum
between
stiffness
toughness.
Flexural
modulus
at
12.1
GPa
carbon-dominant
layers,
whereas
resistance
alternating
120
kJ/m2.
SEM
analysis
revealed
dominant
mechanisms
failure
delamination
fiber-matrix
interface
pull-out,
while
order
critical
regarding
stress
distribution.
Hybridization
also
increased
cost-performance
metrics
factor
40%,
reduced
cost
maintaining
acceptable
mechanical
properties.
These
prove
potential
basalt-carbon
applications
requiring
high
strength,
resistance,
economic
efficiency.
Language: Английский