Code_Aster
®
Version
7.1
Titrate:
SSNV149 - Test of ENDO_ISOT_BETON
Date:
28/10/03
Author (S):
P. BADEL, V. GODARD
Key
:
V6.04.149-B
Page:
1/6
Manual of Validation
V6.04 booklet: Nonlinear statics of the voluminal structures
HT-66/03/008/A
Organization (S):
EDF-R & D/AMA
Manual of Validation
V6.04 booklet: Nonlinear statics of the voluminal structures
Document: V6.04.149
SSNV149 - Test of ENDO_ISOT_BETON
Summary:
One presents in this test two quasi static calculations of an element of volume in homogeneous deformation with
the law of behavior ENDO_ISOT_BETON.
Code_Aster
®
Version
7.1
Titrate:
SSNV149 - Test of ENDO_ISOT_BETON
Date:
28/10/03
Author (S):
P. BADEL, V. GODARD
Key
:
V6.04.149-B
Page:
2/6
Manual of Validation
V6.04 booklet: Nonlinear statics of the voluminal structures
HT-66/03/008/A
1
Problem of reference
1.1
Geometry and boundary conditions
y
X
Z
P
4
P
8
P
6
P
5
P
2
P
1
P
3
P
7
Blockings
P1P2P3P4: dz=0
P1P5P8P4: dx=0
P1P5: dy=0
P2P6: dy=0
Traction/compression
P2P6P7P3: dx imposed
{dx, Dy, dz} are displacements of
nodes according to the three directions.
Appear 1.1-a: Geometry and boundary conditions of the uniaxial tests
The boundary conditions adopted ensure a homogeneous deformation in the element.
1.2
Material properties
Elastic behavior:
E
MPa
=
=
300000
0 3
;
.
Damaging behavior:
Y
T
MPa
E
MPa
=
= -
3
6000
;
2
Reference solution
This test is a test of nonregression.
Code_Aster
®
Version
7.1
Titrate:
SSNV149 - Test of ENDO_ISOT_BETON
Date:
28/10/03
Author (S):
P. BADEL, V. GODARD
Key
:
V6.04.149-B
Page:
3/6
Manual of Validation
V6.04 booklet: Nonlinear statics of the voluminal structures
HT-66/03/008/A
3 Modeling
With
3.1
Characteristics of modeling
Modeling
3D
Element MECA_HEXA8.
3.2
Characteristics of the mesh
A number of nodes: 8
A number of meshs and types: 1 HEXA8
3.3 Functionalities
tested
The law of behavior ENDO_ISOT_BETON.
4
Results of modeling A
4.1
Properties of material
Damaging behavior:
MPa
E
MPa
MPa
T
C
threshold
T
threshold
6000
;
225
.
11
;
3
-
=
=
=
4.2
Way of loading
The element is subjected to a uniaxial traction followed by a discharge and a uniaxial pressing.
4.3 Values
tested
Moment
Name of the field
Component
Place
Aster
24
DEPL
DX N2 8.006E+06
24
SIEF_ELGA
SIXX
M1, point 1
2.03628E+07
24
VARI_ELGA
V1
M1, point 1
8.14067E-01
Code_Aster
®
Version
7.1
Titrate:
SSNV149 - Test of ENDO_ISOT_BETON
Date:
28/10/03
Author (S):
P. BADEL, V. GODARD
Key
:
V6.04.149-B
Page:
4/6
Manual of Validation
V6.04 booklet: Nonlinear statics of the voluminal structures
HT-66/03/008/A
5
Results of modeling B
5.1
Properties of material
Damaging behavior:
MPa
E
MPa
MPa
T
C
threshold
T
threshold
6000
;
40
;
3
-
=
=
=
5.2
Way of loading
The element is subjected to a uniaxial pressing.
5.3 Values
tested
Moment
Name of the field
Component
Place
Aster
25
DEPL
DX N2 1.28E-05
25
SIEF_ELGA
SIXX
M1, point 1
3.84E+07
25
VARI_ELGA
V1
M1, point 1
0.00E+00
27
DEPL
DX N2 1.37E-05
27
SIEF_ELGA
SIXX
M1, point 1
4.06405E+07
27
VARI_ELGA
V1
M1, point 1
2.90913 E-02
37
DEPL
DX N2 1.82E-05
37
SIEF_ELGA
SIXX
M1, point 1
4.55227E+07
37
VARI_ELGA
V1
M1, point 1
1.00E+00
Code_Aster
®
Version
7.1
Titrate:
SSNV149 - Test of ENDO_ISOT_BETON
Date:
28/10/03
Author (S):
P. BADEL, V. GODARD
Key
:
V6.04.149-B
Page:
5/6
Manual of Validation
V6.04 booklet: Nonlinear statics of the voluminal structures
HT-66/03/008/A
6
Summary of the results
The objective of modeling A is to show refermeture of fissure in compression after one
phase of damaging traction. Modeling B shows the effects of the parameter
C
threshold
(stress threshold in an unconfined compression test). It should be noted that the stress threshold
does not correspond in calculation exactly to the stress of initiation of the damage in
compression, this is due to the fact that the criterion is evaluated starting from the deformations with the pitch of time
precedent and not with the pitch of current time. The error observed thus depends on the size of the pitches on
time.
Code_Aster
®
Version
7.1
Titrate:
SSNV149 - Test of ENDO_ISOT_BETON
Date:
28/10/03
Author (S):
P. BADEL, V. GODARD
Key
:
V6.04.149-B
Page:
6/6
Manual of Validation
V6.04 booklet: Nonlinear statics of the voluminal structures
HT-66/03/008/A
Intentionally white left page.