Journal of Mechanisms and Robotics,
Год журнала:
2023,
Номер
16(9)
Опубликована: Дек. 27, 2023
Abstract
This
paper
applies
the
kirigami
technique
to
a
non-rigid
foldable
tubular
origami
make
rigid
design,
i.e.,
radially
closable
(RC-kiri).
The
laminar
emergent
torsional
(LET)
compliant
joint
is
applied
surrogate
crease,
which
makes
design
applicable
in
practical
engineering
applications.
By
incorporating
non-flat
folding
angles
of
each
crease
are
minimized,
leading
reduction
strain
exerted
on
materials.
kinetostatic
theoretical
model
constructed
using
principle
virtual
work,
and
its
results
compared
with
those
obtained
from
simulation
finite
element
analysis
(FEA).
A
3D
printed
physical
tested
obtain
relationship
between
forces
displacements.
FEA
experimental
match
findings.
study
builds
bridge
expands
application
LET
joints
fabrication
kirigami.
Space Science & Technology,
Год журнала:
2024,
Номер
4
Опубликована: Янв. 1, 2024
Space
deployable
masts,
as
one
of
the
most
widely
used
branches
space
structures,
can
provide
driving,
positioning,
and
transmission
functions
for
spacecraft
in
orbit,
which
are
irreplaceable
complex
activities.
The
nonmagnetic
telescopic
tubular
mast
(NMTTM)
is
designed
manufactured
by
Shenyang
Institute
Automation,
Chinese
Academy
Sciences,
aboard
SATech-01
satellite
to
keep
magnetic
probe
assembly
away
from
interference
realize
global
field
measurement.
NMTTM
withstand
complicated
vibration
shock
during
rocket
launching
retracted
state
0.95
m,
while
it
be
stably
released
deployed
5.28
m
orbit.
was
successfully
launched
into
Sun-synchronous
orbit
on
27
July
2022,
fully
deployed,
generated
positioning
signal
after
a
duration
19
min
16
s
deployment
process
7
November.
This
paper
focuses
whole
mission
requirements
structure
design
manufacture,
through
releasing,
deployment,
locking
technology,
environmental
simulation
tests,
up
on-orbit
verification,
provides
valuable
experience
subsequent
development
application
large-scale
masts.
AIAA Journal,
Год журнала:
2024,
Номер
unknown, С. 1 - 12
Опубликована: Май 13, 2024
It
has
become
a
trend
to
use
foldable
membranes
construct
large
spacecraft
structures
such
as
solar
sails,
antennas,
and
drag
sails
with
the
advantages
of
being
lightweight
having
high
packing
efficiency.
To
enhance
existing
numerical
simulation
membrane
deployment,
nonlinear
behavior
crease
is
finely
described
based
on
experiments
integrated
into
model
via
principle
virtual
work.
Specifically,
modeled
multibody
system
(MBS)
absolute
nodal
coordinate
formulation
(ANCF),
where
flexible
facet
meshed
both
ANCF
triangular
quadrilateral
thin
shell
elements
treated
torsional
spring
special
constraints
along
fold
line.
The
MBS
modeling
method
validated
deployment
experiment
Z-folding
membrane.
four-unit
Miura-ori
further
analyzed
show
capability
approach
in
complicated
configurations.
Good
agreement
obtained
membrane-deformed
configurations
between
experiment.
Additionally,
driving
force
at
corners
obtained.
This
research
expected
provide
more
accurate
facilitate
design
optimization
space
deployable
structure.
Chinese Journal of Aeronautics,
Год журнала:
2024,
Номер
37(10), С. 234 - 248
Опубликована: Янв. 30, 2024
Solar
sailing
is
a
promising
propellant-free
approach
to
propelling
spacecraft
in
space.
However,
the
efficiency
of
conventional
solar
sail
limited
by
their
area-to-mass
ratios.
This
paper
proposes
novel
design
micro
sails
with
ratios
above
100
m2/kg
for
next-generation
chip-scale
spacecraft.
Bilayer
thin
films
developed
Microelectromechanical
Systems
(MEMS)
technologies
were
patterned
into
grid
microstructures,
and
theoretical
analysis
prototype
was
conducted.
The
electro-thermal
thermo-mechanical
models
geospace
established
taking
effects
Joule
heating,
radiation,
thermal
re-emission
consideration,
enabling
rapid
prediction
its
three-dimensional
(3-D)
reconfiguration
from
as-released
two-dimensional
(2-D)
microstructure.
Adjustment
ChipSail's
acceleration
arising
sail's
morphing
also
analytically
modeled.
Fabrication
characterization
made
multiple
Al/Ni50Ti50
bilayer
beams
accomplished.
In-situ
SEM
imaging
vacuum
chamber
witnessed
an
active
continuous
3-D
under
over
90°
deformation
detected
applying
DC
voltage
0.078
V.
Theoretical
experimental
work
on
at
least
10
times
higher
than
ones
will
lay
solid
foundation
efficient
sailing.
