Code_Aster ®
Version
7.1
Titrate:
SSNA111 - Indentation of a solid mass by a punch
Date
:

06/11/03
Author (S):
Mr. Key ABBAS
:
V6.01.111-A Page:
1/4

Organization (S): EDF-R & D/AMA
Handbook 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 modelled with elements axisymmetric and subjected to a displacement imposed and on
contact.

Handbook of Validation
V6.01 booklet: Nonlinear statics into axisymmetric
HT-66/03/008/A

Code_Aster ®
Version
7.1
Titrate:
SSNA111 - Indentation of a solid mass by a punch
Date
:

06/11/03
Author (S):
Mr. Key ABBAS
:
V6.01.111-A Page:
2/4

1
Problem of reference

1.1 Geometry
2,7

1

With

Y

X

5

10

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 = 2.0x105 MPa;=0.3
Y = 300MPa; AND = 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: uy = ­ 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.
Handbook of Validation
V6.01 booklet: Nonlinear statics into axisymmetric
HT-66/03/008/A

Code_Aster ®
Version
7.1
Titrate:
SSNA111 - Indentation of a solid mass by a punch
Date
:

06/11/03
Author (S):
Mr. Key ABBAS
:
V6.01.111-A Page:
3/4

3 Modeling
With

3.1
Characteristics of modeling

· Modeling AXIS

3.2
Characteristics of the grid

The grid is obtained by GMSH.

A number of nodes: 1803
A number of meshs: 1852

3.3 Functionalities
tested

Commands 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.
Handbook of Validation
V6.01 booklet: Nonlinear statics into axisymmetric
HT-66/03/008/A

Code_Aster ®
Version
7.1
Titrate:
SSNA111 - Indentation of a solid mass by a punch
Date
:

06/11/03
Author (S):
Mr. Key ABBAS
:
V6.01.111-A Page:
4/4

5
Summary of the results

This example of nonregression shows a non-linear calculation with contact.
Handbook of Validation
V6.01 booklet: Nonlinear statics into axisymmetric
HT-66/03/008/A

Outline document