M ar. 2011
Transactions of N anjing U niversity of Aeronautics
& Astronautics
V
o\.
28
N
o.
1
PREDICTION OF TEXTILE FABRIC
REINFORCED COMPOSITE PROPERTIES BASED ON
NODE INTERPOLATION CELL METHOD
Sun
Jie
,
Song
Yingdong
,
ιαo
Xigu
α ng
,
Sun
Zhig
α
ng
(College of Energy and Power Engineering, NU
AA
, 29 Yudao Street, Nanjing, 210016, P. R. China)
Abstract: N ode interpolation cell method
(NICM)
is
a microm
ec
hanics method em ploying the virtual displacement
principle and the representative volume element
(RVE)
scheme
to
obtain the relationship between the global and
th
e local strain. M
ec
hanical prope
rti
es of 2
-D
textile fabric reinforced ceramic matrix composit
es
are predicted
by
N ICM. M icrostructures of
2
一
o
woven and braided fabric reinforced composite are modeled
by
two kinds of RVE
scheme. NICM
is
used
to
predict the macroscopic mechanical properties. T he fill and warp yarns are
sim
ulated
with cubic B
--s
pline and their undulating forms are approximated
by
sinusoid. T he eff
ec
t of porosity on the fib er
and matrix are considered
as
a reduction of elastic module. T he connection of microstructure parameters and fiber
volume fraction is modeled to investigate the reflection on
th
e mechanical prope
rti
es.
Th
e results predicted
by
NICM are compared with that
by
the finite element
method(FEM)
.
The
comparison shows that NICM
is
a valid
and feasible method for predicting the mechanics prope
rti
es of
2
一
o
woven and braided fabric reinforced ceramic
matnx
compos
It
es .
Key words: textile composites; mechanical properties; ceramic; node interpolation cell method
CLC number: T B332
Document code: A Article ID: 1005-1120( 2011)
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INTRODUCTION
In
past
two
decades
,
researchers
have
been
showing
an
increase
interest
in
textile
fabric
com-
posites.
The
interlacing
of
fabric
has
several
ad-
vantages
,
such
as
higher
elastic
and
strength
properties
(especially
through
the
tl
山
kness
direc-
tion)
,
bett
er
toughness
properties
,
improved
damage
tolerance
and
impact
resistance
l1
].
Those
properties
make
the
woven
fabric
composites
at-
tractive
for
many
structural
applications
(air-
craft
,
space
,
automotive
,
etc.).
Since
the
ad-
vancement
of
woven
technology
,
the
performance
of
w
oven
com
posite
has
been
im
proved
gradually.
However
,
the
mechanical
behavior
of
textile
composite
is
complex
due
to
the
complicated
mi-
crostructure.
Many
researchers
have
attempted
to
model
the
performance
of
textile
fabric
reinforced
composites.
These
investigations
are
mainly
di-
viding
into
three
categories.
The
first
category
is
analytical
m e
thod
that
based
on
classical
lamina-
tion
theory
(CL
T).
Ishikawa
and
Chou[
凹]
devel-
oped
mosaic
,
fiber
undulation
and
bridging
mod-
els.
T
hese
three
models
are
1-{)
and
only
consider
the
undulation
of
the
yarns
in
the
loading
direc-
tion.
N
aik
[ 4]
extended
the
models
of
Ishikawa
and
Chou
to
2-{)
elastic
models
,
considering
undula-
tions
of
both
fill
and
warp
yarns.
Zhang
and
Dai[5]
suggested
a
simplified
2-{)
model
,
in
w
hich
the
unit
cell
is
modeled
by
using
linear
shape
functions.
M
ital[
6]
developed
a
sim
plified
model
to
simulate
the
complete
thermo
咽
echanical
behav-
ior
of
plain
weave
com
posites.
T
he
second
is
fi-
nite
element
method
(FEM)
w
hich
is a
powerful
method
for
analysis
of
structures
with
complex
geometry
and
configuration.
It
is
firstly
used
by
Foundation items: Supported
by
the A viation Science Foundationof China (2009ZB5052); the Specialized Research
Foundation for
th
e
Do
c
tor
Program of Higher Education( 20070287039) .
Received date: 2010-10-18; revision received date: 20
11
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E
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