- ANGLE SUBDIVISIONS
-
This parameter applies only to Abaqus/Standard analyses.
This parameter is meaningful only when a second-order orientation
tensor is used to specify the orientation of the inclusions in the aggregate.
Set
this parameter equal to the number of angle increments used for the discretization of
the orientation space.
-
CLOSURE
-
This parameter is used to select the closure approximation to compute the orientation
distribution function using the second-order orientation tensor. This parameter is
meaningful only when a second-order orientation tensor is used to specify the
orientation of the inclusions in the aggregate.
Set
CLOSURE=FITTED
to use the fitted closure approximation.
Set
CLOSURE=HYBRID
(default) to use the hybrid closure approximation.
Set
CLOSURE=QUADRATIC
to use the quadratic closure approximation.
Set
CLOSURE=SMOOTH
to use the orthotropic smooth closure approximation.
- FORMULATION
-
Set
FORMULATION=MT
(default) to use the Mori-Tanaka model as the homogenization method. This setting is
the only formulation available in Abaqus/Explicit.
Set FORMULATION=VOIGT to use the Voigt model as the homogenization method.
Set FORMULATION=REUSS to use the Reuss model as the homogenization method.
Set
FORMULATION=INVERSED MT
to use the inverse Mori-Tanaka model as the homogenization method.
Set FORMULATION=BALANCED to use the interpolative double inclusion model as the
homogenization method.
This parameter is ignored if the
CONCENTRATION TENSOR option is used in the same material definition.
- ISOTROPIZATION
-
Set
ISOTROPIZATION=ALLISO
(default) to use the isotropic projection of the stiffness to compute the entire
concentration tensor. This setting is the only isotropization method available in Abaqus/Explicit.
Set ISOTROPIZATION=E-ISO to use the isotropic projection of the matrix stiffness to
compute only the Eshelby tensor part of the concentration tensor.
Set ISOTROPIZATION=P-ISO to use the isotropic projection of the matrix stiffness to
compute only the Hill's tensor part of the concentration tensor.
- UNIFORM MATRIX STRAIN
-
This parameter is meaningful only for multiphase composites with multiple inclusions or void
constituents. See Multistep Homogenization.
Set UNIFORM MATRIX STRAIN=NO (default) to indicate that Voigt homogenization is performed
between pseudo-grains in the second homogenization step.
Set UNIFORM MATRIX STRAIN=YES to indicate that a direct Mori-Tanaka homogenization is used
for the composite. This approach assumes that the average strain in the matrix
is uniform across all pseudo-grains.
In Abaqus/Explicit the matrix strain is always assumed to be uniform across all pseudo-grains.