Context:
See
Porous Metal Plasticity
for more information.
-
From the menu bar in the Edit Material dialog
box, select
.
(For information on displaying the Edit Material
dialog box, see
Creating or editing a material.)
-
Enter a value for the initial Relative density of
the material.
-
Toggle on Use temperature-dependent data to
define data that depend on temperature.
A column labeled Temp appears in the
Data table.
-
Click the arrows to the right of the Number of field
variables field to increase or decrease the number of field
variables on which the data depend.
-
Enter the following data in the Data table:
- q1, q2, and
q3
-
Material parameters ,
,
.
For typical metals the ranges of the parameters reported in the
literature are
= 1.0 to 1.5,
= 1.0, and
=
= 1.0 to 2.25 (see
Necking of a round tensile bar).
The original Gurson model is recovered when
=
=
= 1.0.
- Temp
-
Temperature.
- Field
n
-
Predefined field variables.
You may need to expand the dialog box to see all the columns in the
Data table. For detailed information on how to enter data,
see
Entering tabular data.
-
If desired, select
from the menu to specify material failure criteria
for an
Abaqus/Explicit
analysis. See
Defining porous material failure criteria
for details.
-
If desired, select from the
menu to define the nucleation of voids in the
porous material. See
Defining void nucleation in a porous material
for details.
-
Click OK to create the material and to close
the Edit Material dialog box. Alternatively, you can
select another material behavior to define from the menus in the Edit
Material dialog box (see
Browsing and modifying material behaviors
for more information).