Eng—Advances in Engineering,
Год журнала:
2023,
Номер
4(1), С. 903 - 940
Опубликована: Март 8, 2023
Auxetic
structures
(AXSs)
are
a
novel
class
of
materials
with
unique
mechanical
deformation
behavior
associated
negative
Poisson
ratio.
The
combination
AXS
configurations
various
types
has
unveiled
wide
field
applications,
including
military
high-velocity
protection
against
explosions
and
ballistic
projectiles.
However,
the
characteristic
geometric
re-entrant
model
AXSs
imposes
limitations
difficulties
when
using
conventional
manufacturing
methods
to
assemble
structure
lattice.
Additive
(AM)
recently
been
explored
as
more
efficient
cost-effective
method
fabricate
AXSs,
regardless
type
material.
This
review
paper
focuses
on
development
applications
AM
processed
AXSs.
highlights
significance
great
potential
for
this
that
can
be
produced
relatively
fast
at
low
cost.
advantages
AXS/AM
expected
extend
important
industrial
sectors,
particularly
armor,
where
feasibility
products
improved
properties
is
critical.
use
offers
viable
solution
overcome
methods,
thus
greater
design
flexibility,
cost
efficiency,
reduced
material
waste.
aims
contribute
understanding
current
state-of-the-art
future
research
prospects
production
AXS/AM.
Advanced Functional Materials,
Год журнала:
2024,
Номер
34(29)
Опубликована: Март 11, 2024
Abstract
Metamaterials
(MMs),
which
include
phononic
crystals
(PCs)
as
a
particular
type,
exhibit
anomalous
wave
propagation
properties
through
artificial
design
of
topologies
or
lattice
forms
unit‐cells.
Recent
advancements
in
MMs
signify
an
ascendant
research
trend,
providing
promising
ideas
and
means
for
unprecedented
properties.
The
imperative
on‐demand,
real‐time
active
control
underscores
the
significance
tunable
manipulation
acoustic/elastic
waves,
promoting
development
MMs.
Furthermore,
versatility
intelligent
materials
their
ongoing
innovation
contribute
significantly
to
emergence
diverse
This
comprehensive
survey
provides
overview
recent
current
trends
interdisciplinary
field
with
electro‐/magneto‐mechanical
couplings.
primary
objective
review
is
emphasize
significant
progress
agile
waves
coupled
MMs,
followed
by
in‐depth
exploration
metasurfaces,
topological
non‐Hermitian
parity‐time
symmetric
systems,
odd
elastic
spatiotemporally
modulated
Special
emphasis
given
multi‐field
coupling
effects.
concludes
summary
outlines
potential
prospects,
offering
timely
informative
guide
future
studies
on
actively
PCs
practical
engineering
applications.
International Journal of Mechanical Sciences,
Год журнала:
2024,
Номер
276, С. 109359 - 109359
Опубликована: Май 4, 2024
Recent
advancements
in
3D
printing
technologies
have
made
it
possible
to
fabricate
intricate
lattice
architectures
with
high
precision.
These
lattices
can
now
be
utilized
design
lightweight
sandwich
structures
that
serve
multiple
functions.
To
enhance
the
impact
loading
performance
of
these
structures,
is
crucial
understand
how
lattice's
topological
properties,
particularly
those
minimal
surface
attributes
like
periodic
or
stochastic
Primitive
and
Gyroid
triply
surfaces
(TPMS)
spinodal-like
cellular
materials,
associate
mechanical
properties
while
keeping
skin
thickness
fixed.
Thus,
this
paper
explores
low-velocity
behavior
various
sheet/shell-based
surface-latticed
cores
woven
composite
skins.
The
elasto-plastic-damage
numerical
simulations
consider
core
periodicity,
randomness,
anisotropy
relative
density
constant.
Core
randomness
are
designed
using
Gaussian
Random
Field
(GRF)
method
for
spinodal-based
materials
TPMS.
simulation
results
showed
Primitive-lattice
exhibits
out-of-plane
shearing
strength,
enabling
structure
demonstrate
highest
perforation
limit.
GRF
achieved
peak
load
due
its
anisotropic
properties.
However,
post-yielding
bending
sheet
limited
ability
resist
perforation,
absorb
dissipated
energy.
Interestingly,
TPMS
topology,
inherent
densely-distributed
microstructure,
sensitivity
rate,
resulting
enhanced
energy
absorption
dissipation
structure.
findings
offer
valuable
insights
optimizing
multifunctional
superior
their
additive
manufacturing.
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 26, 2025
Abstract
Auxetic
metamaterials
refer
to
materials
and
structures
with
extraordinary
deformation,
i.e.,
transverse
expansion
(contraction)
under
uniaxial
tension
(compression).
In
recent
decades,
a
very
wide
range
of
innovative
functional
performance
has
been
discovered
stemming
from
this
behavior.
This
desirable
exhibition
adaptivity,
programmability,
functionality
provides
great
potential
in
soft
intelligent
systems.
However,
thus
far,
the
mainstream
research
on
auxetic
focused
subjective
design,
monotonic
mechanical
properties,
passive
tunability.
review
thorough
overview
classical
properties
applications,
primary
objective
proposing
new
roadmap
auxetics
for
advances
interdisciplinary
field.
The
fundamental
works
are
categorized
different
configurations
mechanisms.
particular,
integration
shape
morphing,
actuation,
sensing,
multiphysical
response,
inverse
design
is
reviewed
detail.
To
accelerate
development
smart
structural
systems,
applications
generalized
into
robotics
(outside
body),
human–machine
interaction
(surrounding
healthcare
devices
(inside
body).
Finally,
several
significant
topics
emphasized
theory,
material
choice,
manufacturing
technique,
applications.
Materials & Design,
Год журнала:
2024,
Номер
241, С. 112913 - 112913
Опубликована: Апрель 2, 2024
This
research
presents
the
design,
manufacturing,
and
macroscopic
characterization
of
flexible
mechanical
metamaterials
with
tunable
elastic
properties.
The
constants
were
given
using
energy
principle
Castigliano's
second
theorem,
results
validated
through
static
simulations
tensile
experiments,
showing
good
agreement.
Then
complete
parametric
study
was
conducted
to
demonstrate
possibility
extensively
customizing
Poisson
effect
stiffness.
Additionally,
comparison
between
developed
star-shaped
cellular
structures
on
properties
six
groups
samples.
demonstrated
that
exhibited
remarkable
superiority
in
deformability,
sensitivity,
auxeticity.
Furthermore,
an
innovative
experiment
is
devised
characterize
responses
coupling
system
complemented
numerical
modeling,
similar
phenomenon
also
observed
other
metamaterials.
proposed
design
offered
a
way
induce
system's
profile
occurring
wavy
deformation.
Aerospace Science and Technology,
Год журнала:
2024,
Номер
147, С. 108995 - 108995
Опубликована: Фев. 22, 2024
Biological
thin-walled
cellular
structures,
such
as
hierarchical
structures
of
bone,
exhibit
unique
internal
that
offer
lightweight
characteristics
and
high
energy
absorption
capabilities.
The
compact
bone
shell
can
protect
against
local
damage
during
high-impact
events,
while
the
porous
cancellous
is
essential
in
absorbing
energy.
This
research
proposed
five
novel
bioinspired
inspired
by
well-arranged
structure
femur
bones.
These
comprise
four
distinct
cell
types:
hexagonal
honeycomb,
re-entrant,
hybrid,
hybrid
cells.
A
comprehensive
numerical
model,
validated
with
experimental
data,
was
employed
to
assess
performance
these
under
uniaxial
compression.
Some
key
were
revealed,
including
peak
elastic
load,
plateau
capacity,
Poisson's
ratio,
effect
size.
results
demonstrated
surpassed
traditional
designs,
design,
trabecular-bone-inspired
structures.
enhanced
due
progressive
buckling
collapse
mechanisms,
showing
promising
implications
for
future
engineering
applications,
particularly
where
paramount
importance.
