Applied Force (Rigid Material)
The Applied Force subnode is used to apply forces on a rigid domain. The force can act at an arbitrary position in space. A force implicitly contributes also to the moment if it is not applied at the center of mass of a rigid domain. The force that you specify is interpreted in the selected coordinate system.
Coordinate System Selection
The Coordinate system list contains all applicable coordinate systems in the model. Select a Coordinate system for specifying the directions of the force.
Location
Select an option from the list: Center of rotation, Centroid of selected entities, or User defined. This is the location where the force is applied.
For Center of rotation, the location of the load is taken as the center of rotation as defined in the parent Rigid Material node.
For Centroid of selected entities select an Entity levelBoundary, Edge, or Point. The available choices depend on physics interface and geometrical dimension. The force acts at the centroid of the selected entities, which do not need to be related to rigid domain itself. As a special case, you can select a single point, and thus place the force at that point.
For User defined, enter the Location (global coordinates), Xp, in the table.
Select the Offset check box to add an optional offset vector to the definition of the location. Enter values for the offset vector Xoffset.
The location used is the sum of the vector obtained from any of the input methods and the offset vector.
Applied Force
Select the Direction of the applied force — Space-fixed direction or Body-fixed direction.
For Space-fixed direction, the directions of the applied force F are fixed with respect to the selected Coordinate system.
For Body-fixed direction, the directions of the applied force F follow the rotation of the rigid domain.
Enter values or expressions for the components of the Applied force F. The direction coordinate names can vary depending on the selected coordinate system.
Linear Buckling
To display this section, click the Show More Options button () and select Advanced Physics Options in the Show More Options dialog box.
If you are performing a linear buckling analysis with a combination of live and dead loads, select the Treat as dead load check box to indicate that the load contributions from this node are constant. The default is that a load is proportional to the load factor.
 
You can add the Phase subnode to specify the phase of this load in a frequency domain analysis.
Location in User Interface
Context Menus
Ribbon
Physics tab with Rigid Material node selected in the model tree: