Code_Aster ®
Version
7.4
Titrate:
Operator DEFI_COQU_MULT
Date:
31/01/05
Author (S):
X. DESROCHES, A. Key M. DONORE
:
U4.42.03-G Page
: 1/4
Organization (S): EDF-R & D/AMA
Handbook of Utilization
U4.4- booklet: Modeling
Document: U4.42.03
Operator DEFI_COQU_MULT
1 Goal
To determine the characteristics materials homogenized of a multi-layer hull from
characteristics of each layer. Are taken into account the following characteristics:
·
thickness,
·
type of constitutive material,
·
orientation of fibers compared to a reference axis.
Product a structure of data of the type MATER.
Handbook of Utilization
U4.4- booklet: Modeling
HT-66/05/004/A
Code_Aster ®
Version
7.4
Titrate:
Operator DEFI_COQU_MULT
Date:
31/01/05
Author (S):
X. DESROCHES, A. Key M. DONORE
:
U4.42.03-G Page
: 2/4
2 Syntax
MUl [to subdue] = DEFI_COQU_MULT (
COUCHE
= (_F
(
EPAIS =
EP,
[R]
MATER
= MA
,
[to subdue]
ORIENTATION
=
/
ORIEN
,
[R]
/
0.
,
[DEFAUT]
))
IMPRESSION = _F (UNITE =/links,
[I]
/8,
[DEFAUT]
)
)
Handbook of Utilization
U4.4- booklet: Modeling
HT-66/05/004/A
Code_Aster ®
Version
7.4
Titrate:
Operator DEFI_COQU_MULT
Date:
31/01/05
Author (S):
X. DESROCHES, A. Key M. DONORE
:
U4.42.03-G Page
: 3/4
3 Operands
3.1 Word
key
COUCHE
COUCHE = _F
Key word factor for the definition of a layer of the multi-layer composite on the basis of the layer
lower to the roadbase.
3.1.1 Operand
EPAIS
THICK = EP
Thickness of the layer.
3.1.2 Operand
MATER
MATER = MA
Concept MA contains material constitutive of the layer and is produced by the operator
DEFI_MATERIAU under the key word factor ELAS_ORTH.
3.1.3 Operand
ORIENTATION
ORIENTATION = orien
Angle of the 1ère direction of orthotropism (longitudinal direction or direction of fibers) in the plan
tangent with the element compared to the 1ère direction of the reference mark of reference defined in
operator AFFE_CARA_ELEM by the key word factor COQUE and key word ANGL_REP
[U4.42.01].
By defect orien is null, if not it must be provided in degrees and must lie between 90° and
+ 90°.
orien
xréf
normal
fibers
xréf
ANGL_REP
Z
tangent plan with the hull
Y
X
Handbook of Utilization
U4.4- booklet: Modeling
HT-66/05/004/A
Code_Aster ®
Version
7.4
Titrate:
Operator DEFI_COQU_MULT
Date:
31/01/05
Author (S):
X. DESROCHES, A. Key M. DONORE
:
U4.42.03-G Page
: 4/4
3.2 Operand
IMPRESSION
IMPRESSION = _F (
Impression on the unit links (by defect the file resu) of the list of the coefficients
homogenized.
4 Example
MULTI = DEFI_COQU_MULT
(
SLEEP = (_F (THICK = 1.E-3, MATER = MAT1, ORIENTATION = - 20.),
SLEEP = (_F (THICK = 2.E-3, MATER = MAT2, ORIENTATION = 10.),
SLEEP = (_F (THICK = 2.E-3, MATER = MAT2, ORIENTATION = - 10.),
SLEEP = (_F (THICK = 1.E-3, MATER = MAT1, ORIENTATION = 20.),
)
corresponds to the multi-layer one:
Normal
Fibers 4th layer
20°
4
mat1
20°
X 1. E - 3
3
mat2
- 10°
2. E - 3
X
Locate reference
2
mat2
10°
2. E - 3
X
1
mat1
- 20°
1. E - 3
fibers
normal
sub-base
with the hull
Handbook of Utilization
U4.4- booklet: Modeling
HT-66/05/004/A
Outline document