Mechanics of Advanced Materials and Structures,
Год журнала:
2024,
Номер
unknown, С. 1 - 14
Опубликована: Дек. 10, 2024
Functionally
graded
triply
periodic
minimal
surface
(FG-TPMS)
structures
are
known
as
bio-inspired
structures.
They
possess
some
remarkable
advantages
such
porous
with
high
inter-connectivity,
mathematically
controllable
geometry
features
and
smooth
surfaces.
As
another
advantage,
FG-TPMS
can
be
fast
numerously
manufactured
by
3D
printing
technology.
Nevertheless,
modeling
these
is
a
challenging
task.
This
paper
investigates
static
bending
free
vibration
behaviors
of
shells.
The
proposed
formulation
established
upon
isogeometric
analysis
(IGA)
first-order
shear
deformation
shell
theory
(FSDT).
governing
equations
discretized
Galerkin
weak
form
numerically
solved
using
non-uniform
rational
B-Spline
(NURBS)
basis
functions.
Exact
geometries
described
via
NURBS
A
fitting
technique
used
to
compute
the
mechanical
characteristics
materials.
We
investigate
shells
considering
three
types
cell
which
primitive
(P),
gyroid
(G),
I-graph
wrapped
package-graph
(IWP),
six
porosity
distribution
patterns.
present
solutions
verified
reference
ones
in
literature.
Effects
boundary,
type
geometry,
pattern,
length-to-radius
thickness
ratios
on
rigorously
studied.
Especially,
many
numerical
results
first
this
paper.
Journal of Thermoplastic Composite Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 2, 2024
In
this
paper,
the
mechanical
behavior
and
compression
deformation
mode
of
three
types
composite
multilayer
structures
based
on
triply
periodic
minimal
surfaces
(TPMS)
were
conducted
through
experiments
finite
element
analysis.
The
results
indicate
that
load-displacement
curves
under
varying
stain
rates
manifest
a
double-platform
characteristic
for
all
structure
types.
P-G
four-layer
six-layer
have
no
discernible
extrusion
structural
layers
during
compression,
entirety
displays
an
almost
regular
cubic
configuration
after
compression.
Nevertheless,
local
separation
was
observed
in
extruded
portion
P-H
at
higher
strain
rates.
For
other
conditions,
exhibited
bulge
but
did
not
display
any
detachment
or
phenomena.
During
structure,
dome-shaped
region
emerges
first
fifth
layers.
“crown”
layer
inverted
bell-shaped
failure
exhibiting
downward
extrusion.
contrast,
upward
exhibits
mode.
6-layer
has
best
energy
absorption
performance
quasistatic
conditions
4-layer,
structure.
However,
identical
remains
largely
consistent
across
rate
conditions.