To specify predefined friction parameters:

Display the connector section editor by following the procedure outlined in “Defining friction,” Section 15.15.3, and enter the necessary data.

Select Predefined as the Friction model.

Select the Predefined Friction Parameters tabbed page.

Specify the geometric constants and internal contact forces depending on the connection type that you have selected. To display the connection type description that defines the required data entries, see “Connection types,” Section 15.7.1.

To specify a friction-generating contact force and internal contact forces:

Display the connector section editor by following the procedure outlined in “Defining friction,” Section 15.15.3, and enter the necessary data.

Select User-defined as the Friction model.

Select the Contact Force tabbed page.

If desired, toggle on Specify component to define a friction-generating contact force/moment using an intrinsic connector component or a derived connector component.

Choose Intrinsic component, and select the force/moment that is consistent with the available component of relative motion for which you are defining the friction-generating contact force/moment.

Choose Derived component, and click Edit to define a connector derived component. For more information, see “Specifying connector derived components,” Section 15.15.14.

If Specify component is toggled off, you must enter a value for the internal contact force in the data table in the Internal Contact Force portion of the Contact Force tabbed page. If desired, you can do the following to specify the internal contact force:

Use independent components

Toggle on Use independent components, choose Position or Motion, and select the available components of relative position or constitutive motion to be used as independent variables. Enter the connector relative position or constitutive motion in the direction specified by the independent component in the corresponding field of the table.

Accum Slip

Toggle on Use accumulated slip dependence, and enter the accumulated slip in the slip direction.

Temp

Toggle on Use temperature-dependent data, and enter the temperature.

Field 1, Field 2, etc.

Specify the Number of field variables, and enter the value of the first field variable, the value of the second field variable, etc.

Internal Contact Force

Specify the internal contact force data.