Code_Aster
®
Version
7.1
Titrate:
SSNA111 - Indentation of a solid mass by a punch
Date
:
06/11/03
Author (S):
Mr. ABBAS
Key
:
V6.01.111-A
Page:
1/4
Manual of Validation
V6.01 booklet: Nonlinear statics into axisymmetric
HT-66/03/008/A
Organization (S):
EDF-R & D/AMA
Manual of Validation
V6.01 booklet: Nonlinear statics into axisymmetric
Document: V6.01.111
SSNA111 - Indentation of a solid mass by a punch
Summary:
This test relates to the study of a conical punch deforming an elastoplastic massive structure.
The unit is modelized with elements axisymmetric and subjected to a displacement imposed and on
contact.
Code_Aster
®
Version
7.1
Titrate:
SSNA111 - Indentation of a solid mass by a punch
Date
:
06/11/03
Author (S):
Mr. ABBAS
Key
:
V6.01.111-A
Page:
2/4
Manual of Validation
V6.01 booklet: Nonlinear statics into axisymmetric
HT-66/03/008/A
1
Problem of reference
1.1 Geometry
The problem is axisymmetric (of axis Y). The punch consists of only one triangular element. It is
in initial contact with the solid mass at point A.
1.2
Material properties
Elastoplastic material with linear isotropic work hardening:
E = 2.0x10
5
MPa;=0.3
Y
= 300MPa; E
T
= 5000
1.3
Boundary conditions and loadings
The base of the solid mass is embedded and its with dimensions left is imposed on DX=0. The vertical displacement of
punch is imposed on 0.4 and horizontal displacement is imposed on 0.
Loadings
Vertical displacement of the punch: U
y
= 4 NR
2
Reference solution
2.1
Results of reference
Displacements and rotations of node A (
DEPL
).
The results calculated in this case test result from a former execution of Aster. It is a case test
of nonregression.
X
Y
2,7
1
10
5
With
Code_Aster
®
Version
7.1
Titrate:
SSNA111 - Indentation of a solid mass by a punch
Date
:
06/11/03
Author (S):
Mr. ABBAS
Key
:
V6.01.111-A
Page:
3/4
Manual of Validation
V6.01 booklet: Nonlinear statics into axisymmetric
HT-66/03/008/A
3 Modeling
With
3.1
Characteristics of modeling
·
Modeling
AXIS
3.2
Characteristics of the mesh
The mesh is obtained by
GMSH
.
A number of nodes: 1803
A number of meshs: 1852
3.3 Functionalities
tested
Controls Options
AFFE_CHAR_MECA DDL_IMPO
CONTACT “MAIT_ESCL”
4
Results of modeling A
4.1 Values
tested
Loading Value
tested Aster
Vertical displacement in A
Displacement of A Dy
0,25
Force reaction of A Dx
17,2144
Force reaction of A Dy
16,3087
Displacement of A Dy
0,392
Force reaction of A Dx
18,6982
Force reaction of A Dy
13,7081
4.2 Remarks
The force of nodal reaction is in NR/rad since the problem is axisymmetric.
Code_Aster
®
Version
7.1
Titrate:
SSNA111 - Indentation of a solid mass by a punch
Date
:
06/11/03
Author (S):
Mr. ABBAS
Key
:
V6.01.111-A
Page:
4/4
Manual of Validation
V6.01 booklet: Nonlinear statics into axisymmetric
HT-66/03/008/A
5
Summary of the results
This example of nonregression shows a non-linear calculation with contact.