Crystal-Inspired Cellular Metamaterials and Triply Periodic Minimal Surfaces
Biomimetics,
Год журнала:
2024,
Номер
9(5), С. 285 - 285
Опубликована: Май 10, 2024
Triply
periodic
minimal
surfaces
(TPMSs)
are
found
in
many
natural
objects
including
butterfly
wings,
sea
urchins,
and
biological
membranes.
They
simultaneously
have
zero
mean
curvature
at
every
point
a
crystallographic
group
symmetry.
A
metamaterial
can
be
created
from
such
or
used
as
reinforcement
of
composite
material.
While
TPMS
mathematical
object
has
been
known
since
1865,
only
novel
additive
manufacturing
(AM)
technology
made
it
possible
to
fabricate
cellular
materials
with
complex
shapes.
Cellular
TPMS-based
metamaterials
remarkable
properties
related
wetting/liquid
penetration,
shock
absorption,
the
absence
stress
concentrators.
Recent
studies
showed
that
TPMSs
also
crystals
when
electron
considered.
Artificial
crystal-inspired
mimic
zeolites
schwarzites.
These
for
shock,
acoustic
waves,
vibration
structural
materials,
heat
exchangers,
other
applications.
The
choice
crystalline
cell
material,
well
its
microstructure,
plays
decisive
role
properties.
new
area
common
features
traditional
biomimetics
models
being
borrowed
nature
adjusted
engineering
Язык: Английский
Mechanical characterization and puncture resistance of 3D‐printed PLA lattice structures
Polymer Engineering and Science,
Год журнала:
2024,
Номер
64(10), С. 5006 - 5021
Опубликована: Авг. 2, 2024
Abstract
The
increasing
application
of
additively
manufactured
(AM)
materials
in
engineering
and
biomedical
fields
highlights
the
necessity
understanding
their
mechanical
behavior,
particularly
with
complex
lattice
structures.
Polylactic
acid
(PLA),
a
popular
biopolymer
additive
manufacturing,
exhibits
characteristics
highly
dependent
on
its
structural
design.
This
research
investigates
quasi‐static
puncture
failure
analysis
polylactic
(PLA)
various
including
tensile
strength,
flexural
properties,
interlaminar
shear
strength
(ILSS),
Izod
impact
resistance,
punch
(QS‐PSS),
was
investigated
following
respective
ASTM
protocols.
Results
indicate
6%
increase
to
ca.
28
MPa,
for
triangular
PLA
structure
compared
plain
In
test,
hexagonal
showed
13%
bending
45
structure.
Additionally,
exhibited
24%
approximately
8
over
analysis.
analysis,
demonstrated
17%
278
J/m,
circular
A
stainless‐steel
hemispherical
indenter
employed
investigate
behavior
(QS‐PSS)
different
displayed
increased
total
energy
absorption
capacity
specific
19
J
0.529
J/g,
respectively,
other
These
results
are
important
creation
structures,
improving
resistance
advanced
composites.
Highlights
structures
were
fabricated.
Plain,
circular,
triangular,
investigated.
Lattice
used
as
reinforcements.
improved
strength.
reduced
crack
formation
propagation.
Язык: Английский
Effect of orbital hybridization inspired tessellation strategy on the mechanical properties of lattice structures
Thin-Walled Structures,
Год журнала:
2024,
Номер
205, С. 112396 - 112396
Опубликована: Авг. 31, 2024
Язык: Английский
Mechanical characterization of a 3D printed lattice core sandwich structure
Polymer Composites,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 3, 2024
Abstract
Sandwich
structures
have
garnered
interest
as
versatile
for
applications
in
advanced
engineering
structures.
To
fabricate
sandwich
structures,
plastics
replaced
conventional
materials;
however,
most
of
these
remain
the
environment
beyond
their
functional
lifespan.
This
study
describes
fabrication
sustainable
hybrid
with
3D
printed
poly‐lactic
acid
(PLA)
cores
and
self‐reinforced
polyethylene
terephthalate
(srPET)
face
sheets.
The
mechanical
responses
three
types
lattice
cores,
S‐90,
S‐45,
S‐V,
were
compared
those
parent
material
after
performing
bending
impact
tests.
sheet
structure
transferred
load
to
core
without
failure.
containing
S‐90
exhibited
a
higher
fracture
strength
(52.4
MPa)
tangent
modulus
elasticity
(2860
than
other
S‐V
highest
strains
3.3%
5%
respectively.
highlights
excellent
properties
structural
applications.
Highlights
Novel
PLA
are
fabricated.
Three‐point
low‐velocity
tests
performed.
Failure
occurred
core,
but
Sr‐PET
sheets
did
not
deform.
Hybrid
significantly
improve
performance.
Язык: Английский
Bio‐Inspired Graded and Uniform Cylindrical Lattices Fabricated by Material Extrusion 3D Printing: An Experimental and Numerical Investigation
Journal of Applied Polymer Science,
Год журнала:
2024,
Номер
142(10)
Опубликована: Дек. 3, 2024
ABSTRACT
The
main
requirements
of
the
biomedical
and
aerospace
industries
are
new
innovative
lightweight
materials.
Bio‐inspired
structures,
which
inspired
by
various
biological
designs,
have
demonstrated
notable
advancements
over
traditional
structures.
In
this
study,
bioinspired
uniform
graded
cylindrical
triply
periodic
minimal
surface
(TPMS)
strut‐based
lattice
structures
were
studied
for
their
mechanical
qualities
energy
absorption
capacities
fabricated
material
extrusion
3D
printing
using
PLA
material.
It
was
found
that
TPMS
diamond
achieved
maximum
stress
78.5
MPa
absorbed
19.14
MJ/m
3
energy,
outperforming
designs
with
a
48%
higher
than
BCC
structure.
Graded
further
improve
through
better
distribution.
findings
validated
Gibson–Ashby
model,
highlighting
enhanced
load
distribution
transfer
in
finite
element
(FE)
model
results
closely
matched
experimental
data,
confirming
its
predictive
reliability
error
7.7%,
elastic
modulus
6.9%,
plateau
4.7%.
These
insights
underscore
superior
stability
lattices,
indicating
potential
satisfying
stringent
industrial
technical
performance
requirements.
novelty
these
lies
significant
enhancements
absorption.
Future
research
should
build
on
to
design
efficient
materials
tailored
specific
needs
FE
models
optimize
development
processes
before
testing.
Язык: Английский