ProductsAbaqus/StandardAbaqus/ExplicitAbaqus/CAE
TypeModel data
LevelModel
Abaqus/CAEInteraction module
Optional parameters
- PREDEFINED
Include this parameter to specify predefined friction behavior (if available for the connection
type). Abaqus defines the contact forces and the magnitude of the tangential tractions
automatically, as illustrated in Connection Types.
- STICK STIFFNESS
Set this parameter equal to the stick stiffness associated with frictional
behavior. If this parameter is omitted, a default value (which usually is
appropriate) is chosen.
Optional parameters used to specify user-defined friction (mutually
exclusive with the PREDEFINED parameter)
- COMPONENT
Set this parameter equal to the connector's component of relative motion for
which user-defined frictional behavior is specified.
Omit this parameter and use the
CONNECTOR POTENTIAL option in conjunction with the
CONNECTOR FRICTION option to specify coupled user-defined frictional
behavior.
- CONTACT FORCE
Set this parameter equal to the name of the associated
CONNECTOR DERIVED COMPONENT option or
the number of the connector component of relative motion that defines the
friction-generating contact force.
- DEPENDENCIES
Set this parameter equal to the number of field variable dependencies
included in the definition of the connector friction data, in addition to
temperature. If this parameter is omitted, it is assumed that the friction
forces and moments or the contact normal force contributions are independent of
field variables.
See Material Data Definition for more information.
- EXTRAPOLATION
Set EXTRAPOLATION=CONSTANT (default unless
CONNECTOR BEHAVIOR, EXTRAPOLATION=LINEAR is used) to use constant extrapolation of the dependent
variables outside the specified range of the independent variables.
Set EXTRAPOLATION=LINEAR to use linear extrapolation of the dependent variables outside
the specified range of the independent variables.
- INDEPENDENT COMPONENTS
Set INDEPENDENT COMPONENTS=POSITION (default) to specify dependencies on components of relative
position included in the frictional behavior definition.
Set INDEPENDENT COMPONENTS=CONSTITUTIVE MOTION to specify dependencies on components of constitutive relative
motion included in the frictional behavior definition.
- REGULARIZE
This parameter applies only to
Abaqus/Explicit
analyses.
Set REGULARIZE=ON (default unless
CONNECTOR BEHAVIOR, REGULARIZE=OFF is used) to regularize the user-defined tabular connector
friction data.
Set REGULARIZE=OFF to use the user-defined tabular connector friction data
directly without regularization.
- RTOL
This parameter applies only to
Abaqus/Explicit
analyses.
Set this parameter equal to the tolerance to be used to regularize the
connector friction data.
If this parameter is omitted, the default is RTOL=0.03 unless the tolerance is
specified on the
CONNECTOR BEHAVIOR option.
Data line
to define the parameters (geometric constants and internal contact forces) for
predefined frictional behavior (the PREDEFINED parameter is included)
- First (and only) line
First parameter used to specify predefined friction, as
illustrated in Connection Types.
Second friction parameter.
Etc., up to as many friction parameters discussed in Connection Types.
No data line is required for connection type SLIPRING.
Data
lines to define the internal contact forces for user-defined friction that does
not depend on the relative positions or motions in one or more component
directions (both the PREDEFINED and INDEPENDENT COMPONENTS parameters are omitted)
- First line
Internal contact force/moment generating friction.
Accumulated slip.
Temperature.
First field variable.
Second field variable.
Etc., up to five field variables.
- Subsequent lines (only needed if the DEPENDENCIES parameter has a value greater than five)
Sixth field variable.
Etc., up to eight field variables per line.
Repeat this set of data lines as often as necessary to
define the internal contact force as a function of accumulated slip,
temperature, and field variables. Omit these data lines if internal contact
forces do not need to be specified.
Data
lines to define the internal contact forces for user-defined friction that
depends on the relative positions or motions in one or more component
directions (the PREDEFINED parameter is omitted and the INDEPENDENT COMPONENTS parameter is included)
- First line
First independent component number (1–6).
Second independent component number (1–6).
Etc., up to
entries (maximum six).
- Subsequent lines
Internal contact force/moment generating friction.
Connector relative position or constitutive relative motion in the first
independent component identified on the first data line.
Connector relative position or constitutive relative motion in the second
independent component identified on the first data line.
Etc., up to
entries as identified on the first data line.
Accumulated slip.
Temperature.
First field variable.
Second field variable.
- If the number of data entries exceeds the limit
of eight entries per line, continue the input on the next data
line.
- Continuation line (if needed)
Third field variable.
Etc., up to eight entries per line.
Do not repeat the first data line. Repeat the subsequent
data lines as often as necessary to define the internal contact force as a
function of connector relative position or constitutive relative motion,
accumulated slip, temperature, and other predefined field
variables.