ProductsAbaqus/ExplicitAbaqus/CAE TypeModel data
LevelModel Abaqus/CAEProperty module
Optional parameters
- DEFINITION
-
Use this parameter to choose the shear viscosity of the material.
Set DEFINITION=CARREAU-YASUDA to define the Carreau-Yasuda viscous shear behavior.
Set DEFINITION=CROSS to define the Cross viscous shear behavior.
Set DEFINITION=ELLIS-METER to define the Ellis-Meter viscous shear behavior.
Set DEFINITION=HERSCHEL-BULKLEY to define the Herschel-Bulkley viscous shear behavior.
Set DEFINITION=NEWTONIAN (default) to define Newtonian (linear) viscous shear behavior.
Set DEFINITION=POWELL-EYRING to define the Powell-Eyring viscous shear behavior.
Set DEFINITION=POWER LAW to define the power law viscous shear behavior.
Set DEFINITION=TABULAR to define the non-Newtonian viscous shear behavior in tabular
form.
Set DEFINITION=USER (Abaqus/Explicit
only) to define the viscous shear behavior in user subroutine
VUVISCOSITY.
- DEPENDENCIES
-
This parameter applies only to
Abaqus/Explicit
analyses.
Set this parameter equal to the number of field variable dependencies
included in the definition of the viscosity, in addition to temperature. If
this parameter is omitted, it is assumed that the viscosity depends only on
temperature.
- PROPERTIES
-
This parameter can be used only if DEFINITION=USER is specified.
Set this parameter equal to the number of property values needed as data in
user subroutine
VUVISCOSITY. The default value is 0.
Data lines to
define the Carreau-Yasuda viscous shear behavior (DEFINITION=CARREAU-YASUDA)- First
line
-
Shear viscosity at low shear rates (Newtonian limit),
.
(Units of FL−2T.)
-
Shear viscosity at large shear rates, . (Units
of FL−2T.)
-
Time constant, .
(Units of T.)
-
Flow behavior index, .
-
.
-
Temperature.
-
First field variable.
-
Second field variable.
- Subsequent lines (only needed if the DEPENDENCIES parameter has a value greater than two)
-
Third field variable.
-
Etc., up to eight field variables per line.
Repeat this set of data
lines as often as necessary to define the coefficients of the Carreau-Yasuda
viscosity model as a function of temperature and other predefined field
variables.
Data lines to
define the Cross viscous shear behavior (DEFINITION=CROSS)- First
line
-
Shear viscosity at low shear rates (Newtonian limit),
.
(Units of FL−2T.)
-
Shear viscosity at large shear rates, . (Units
of FL−2T.)
-
Time constant, .
(Units of T.)
-
Flow behavior index, .
-
Temperature.
-
First field variable.
-
Second field variable.
-
Third field variable.
- Subsequent lines (only needed if the DEPENDENCIES parameter has a value greater than three)
-
Fourth field variable.
-
Etc., up to eight field variables per line.
Repeat this set of data
lines as often as necessary to define the coefficients of the Cross viscosity
model as a function of temperature and other predefined field
variables.
Data lines to
define the Ellis-Meter viscous shear behavior (DEFINITION=ELLIS-METER)- First
line
-
Shear viscosity at low shear rates (Newtonian limit),
.
(Units of FL−2T.)
-
Shear viscosity at large shear rates, . (Units
of FL−2T.)
-
Effective shear stress, ,
at which the viscosity is 50% between the Newtonian limit,
,
and the infinite shear viscosity, . (Units
of FL−2.)
-
Flow behavior index, .
-
Temperature.
-
First field variable.
-
Second field variable.
-
Third field variable.
- Subsequent lines (only needed if the DEPENDENCIES parameter has a value greater than three)
-
Fourth field variable.
-
Etc., up to eight field variables per line.
Repeat this set of data
lines as often as necessary to define the coefficients of the Ellis-Meter
viscosity model as a function of temperature and other predefined field
variables.
Data lines to
define the Herschel-Bulkley viscous shear behavior (DEFINITION=HERSCHEL-BULKLEY)- First
line
-
Shear viscosity at low shear rates, .
(Units of FL−2T.)
-
Yield shear stress, .
(Units of FL−2.)
-
Consistency index, .
(Units of
FL−2Tn.)
-
Flow behavior index, .
-
Temperature.
-
First field variable.
-
Second field variable.
-
Third field variable.
- Subsequent lines (only needed if the DEPENDENCIES parameter has a value greater than three)
-
Fourth field variable.
-
Etc., up to eight field variables per line.
Repeat this set of data
lines as often as necessary to define the coefficients of the Herschel-Bulkley
viscosity model as a function of temperature and other predefined field
variables.
Data lines to
define Newtonian viscous shear behavior (DEFINITION=NEWTONIAN)- First
line
-
Viscosity. (Units of FL−2T.)
-
Temperature.
-
First field variable.
-
Second 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 viscosity as a function of
temperature and other predefined field
variables.
Data lines to
define the Powell-Eyring viscous shear behavior (DEFINITION=POWELL-EYRING)- First
line
-
Shear viscosity at low shear rates (Newtonian limit),
.
(Units of FL−2T.)
-
Shear viscosity at large shear rates, . (Units
of FL−2T.)
-
Time constant, .
(Units of T.)
-
Temperature.
-
First field variable.
-
Second 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 coefficients of the Powell-Eyring
viscosity model as a function of temperature and other predefined field
variables.
Data lines to
define the power law viscous shear behavior (DEFINITION=POWER LAW)- First
line
-
Consistency index, .
(Units of
FL−2Tn.)
-
Flow behavior index, .
-
Maximum viscosity, .
(Units of FL−2T.)
-
Minimum viscosity, .
(Units of FL−2T.)
-
Temperature.
-
First field variable.
-
Second field variable.
-
Third field variable.
- Subsequent lines (only needed if the DEPENDENCIES parameter has a value greater than three)
-
Fourth field variable.
-
Etc., up to eight field variables per line.
Repeat this set of data
lines as often as necessary to define the coefficients of the power law
viscosity model as a function of temperature and other predefined field
variables.
Data lines to
define the viscous shear behavior in tabular form (DEFINITION=TABULAR)- First
line
-
Viscosity, .
(Units of FL−2T.)
-
Effective shear strain rate, .
(Units of T−1.)
-
Temperature.
-
First field variable.
-
Second 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 viscosity as a function of effective
shear strain rate, temperature, and other predefined field
variables.
Data lines to
define the material properties for the user-defined viscosity model (DEFINITION=USER)- No data
lines are needed if the PROPERTIES parameter is omitted or set to 0. Otherwise, first
line
-
Give the material properties, eight per line.
Repeat this data line as often as necessary to define the
material properties.
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