Optional parameters
- DEPENDENCIES
-
This parameter applies only to
Abaqus/Standard
and
Abaqus/Explicit
analyses.
Set this parameter equal to the number of field variables, in addition to
temperature, on which the coefficients depend. If this parameter is omitted, it
is assumed that the thermal expansion is constant or depends only on
temperature.
This parameter is not relevant if the USER parameter is included or if in an
Abaqus/Standard
analysis spatially varying thermal expansion is defined using a distribution
(see
Distribution Definition).
- FIELD
-
This parameter applies only to
Abaqus/Standard
analyses.
Set this parameter equal to the predefined field variable number for which
field expansion is being defined.
- LIQUID
- This parameter applies only to
Abaqus/Standard
analyses.
Include this parameter if the thermal expansion of the liquid is being
defined for the TNM model.
- PORE FLUID
-
This parameter applies only to
Abaqus/Standard
analyses.
Include this parameter if the thermal expansion of the pore fluid in a
porous medium is being defined. The thermal expansion of a fluid must be
isotropic, so TYPE=ORTHO and TYPE=ANISO cannot be used if this parameter is included.
- PROPERTIES
-
This parameter applies only to
Abaqus/Explicit
analyses.
Set this parameter equal to the number of properties being entered. The
properties are available for use in user subroutine
VUEXPAN. The default is PROPERTIES=0.
- TYPE
-
Set TYPE=ISO (default) to define isotropic expansion.
Set TYPE=ORTHO to define orthotropic expansion.
Set
TYPE=ANISO
to define fully anisotropic expansion.
Set TYPE=SHORT FIBER to define laminate material properties for each layer in each
shell element. This parameter setting is applicable only when using
Abaqus/Standard
in conjunction with the abaqus moldflow execution
procedure. Any data lines will be ignored. Material properties will be read
from the ASCII neutral file identified as
jobid.shf. See
Translating Moldflow Data to Abaqus Input Files
for more information.
In an
Abaqus/Standard
analysis spatially varying isotropic, orthotropic, or anisotropic expansion can
be defined using a distribution. When using a distribution, the TYPE parameter must be used to indicate the level of anisotropy of
thermal expansion. The level of anisotropy must be consistent with that defined
in the distribution. See
Distribution Definition.
- USER
-
Include this parameter to indicate that user subroutine
UEXPAN in
Abaqus/Standard
and
VUEXPAN in
Abaqus/Explicit
will be used to define increments of thermal strain. The TYPE parameter should be used to indicate the level of anisotropy of
thermal expansion. The PORE FLUID parameter can also be used to indicate that the thermal
expansion of the pore fluid is being defined.
The DEPENDENCIES and ZERO parameters are not relevant if this parameter is used.
- ZERO
-
If the thermal expansion is temperature- or field-variable-dependent, set
this parameter equal to the value of .
The default is ZERO=0.
This parameter is not relevant if the USER parameter is included.
Data lines to
define isotropic thermal expansion coefficients (TYPE=ISO with USER parameter omitted)
- First line
-
in
Abaqus/Standard
or
Abaqus/Explicit
analysis. (Units of −1.)
-
Temperature.
-
First field variable.
-
Etc., up to six field variables.
- Subsequent lines (only needed if the DEPENDENCIES parameter has a value greater than six)
-
Seventh field variable.
-
Etc., up to eight field variables per line.
Repeat this set of data
lines as often as necessary to define the thermal expansion coefficient as a
function of temperature and other predefined field
variables.
Data lines to
define orthotropic thermal expansion coefficients (TYPE=ORTHO with USER parameter omitted)
- First line
-
.
(Units of −1.)
-
.
-
.
(Not used for plane stress and shell cases.)
-
Temperature.
-
First field variable.
-
Etc., up to four field variables.
- Subsequent lines (only needed if the DEPENDENCIES parameter has a value greater than four)
-
Fifth field variable.
-
Etc., up to eight field variables per line.
Repeat this set of data
lines as often as necessary to define the thermal expansion coefficients as
functions of temperature and other predefined field
variables.
Data lines to
define anisotropic thermal expansion coefficients (TYPE=ANISO with USER parameter omitted)
- First line
-
.
(Units of −1.)
-
.
-
.
(Not used for plane stress and shell cases.)
-
.
-
.
(Not used for plane stress and shell cases.)
-
.
(Not used for plane stress and shell cases.)
-
Temperature.
-
First field variable.
- Subsequent lines (only needed if the DEPENDENCIES parameter has a value greater than one)
-
Second field variable.
-
Etc., up to eight field variables per line.
Repeat this set of data
lines as often as necessary to define the thermal expansion coefficients as
functions of temperature and other predefined field
variables.
Data line to
define spatially varying thermal expansion in an
Abaqus/Standard
analysis using a distribution
- First (and only) line
-
-
Distribution name. The data defined in the distribution must be in units of
−1
and must be consistent with the level of anisotropy prescribed by the TYPE parameter.
To define thermal
expansion by a user subroutine (USER parameter included)
No data lines
are used with this option when the USER parameter is specified. Instead, user subroutine
UEXPAN must be used to define the thermal expansion. In
Abaqus/Explicit
data lines can be used to specify user properties that are passed in user
subroutine
VUEXPAN to define the thermal expansion.
Data lines to
define isotropic field expansion coefficients (TYPE=ISO with USER parameter omitted)
- First line
-
.
(Units of −1.)
-
Temperature.
-
First field variable.
-
Etc., up to six field variables.
- Subsequent lines (only needed if the DEPENDENCIES parameter has a value greater than six)
-
Seventh field variable.
-
Etc., up to eight field variables per line.
Repeat this set of data
lines as often as necessary to define the field expansion coefficient as a
function of temperature and other predefined field
variables.
Data lines to
define orthotropic field expansion coefficients (TYPE=ORTHO with USER parameter omitted)
- First line
-
.
(Units of −1.)
-
.
-
.
-
Temperature.
-
First field variable.
-
Etc., up to four field variables.
- Subsequent lines (only needed if the DEPENDENCIES parameter has a value greater than four)
-
Fifth field variable.
-
Etc., up to eight field variables per line.
Repeat this set of data
lines as often as necessary to define the field expansion coefficients as
functions of temperature and other predefined field
variables.
Data lines to
define anisotropic field expansion coefficients (TYPE=ANISO with USER parameter omitted)
- First line
-
.
(Units of −1.)
-
.
-
.
(Not used for plane stress case.)
-
.
-
.
-
.
-
Temperature.
-
First field variable.
- Subsequent lines (only needed if the DEPENDENCIES parameter has a value greater than one)
-
Second field variable.
-
Etc., up to eight field variables per line.
Repeat this set of data
lines as often as necessary to define the field expansion coefficients as
functions of temperature and other predefined field
variables.
To define field
expansion by a user subroutine (USER parameter included)
No data lines
are used with this option when the USER parameter is specified. Instead, user subroutine
UEXPAN must be used to define the field
expansion.