This option lets you define the non-linear behavior of supports, releases, and compatible nodes. It can be used for all structure types. You find option by clicking the Non-linear tabs in the dialog for defining supports, releases, and compatible nodes.
You can define the non-linear force (moment) - displacement (rotation) relationship for selected directions (degrees of freedom). These relationships are determined for individual directions independently (there are no interactions). The option can be used for:
- Releases on bar elements - the reference for mutual displacements and (internal) forces are the local directions of a given bar.
- Supports - the reference for displacements and forces are global or local directions (if such directions are defined for a given support node).
- Compatibility models - The reference for displacements (mutual displacements for both nodes connected by a given compatibility model) and forces are global or local directions (if such directions are defined for a node of a given compatibility model).
The top of the dialog has the diagram of the defined non-linear model. The shortcut menu displays, when you position the cursor inside the diagram. The following options are available:
- Diagram Parameters
- Screen Capture
- Copy - Copies the function diagram to the clipboard.
The Non-linear Model Definition dialog consists of two tabs: