All geometry Bodies have an associated Stiffness Behavior property in Mechanical that you can modify during an analysis. This is most often performed when Defining Part Behaviors once you have imported your model into the application.
The Stiffness Behavior property is available for a body, a body group, surface bodies, and 2D models.
To set the Stiffness Behavior in the Mechanical application:
Select the desired Body in the Geometry folder.
In the Details view, set the Stiffness Behavior property to , , , or (Line Bodies only).
See the following sections for more information about body stiffness behaviors: