M. To add loads over a region by corner pressures

To add trapezoidally varying pressure loads over a region, use the following procedure.

These pressure loads are applied in the current units of the model.

These loads are assigned to nodes which form either a triangular or quadrilateral region.

This method of loading is particularly useful when you know the pressure magnitudes at region vertices, all of which can be different (i.e, trapezoidally varying pressure loads). The resulting loads used for analysis are applied as joint loads based on the given pressure and tributary areas of the region for each node.

Either:

On the Loading ribbon tab, select the Load Items tool in the Loading Specifications group
Tip: This will add the load item to the currently selected load group selected in the program status bar.

or
In the Load & Definition dialog, select a primary load case in the Load Cases Details list and then click Add.

The Add New Load Items dialog opens.
Select the Nodal Load > Region Node Load tab.
Select either:

Three Noded Facet - pressure spread to three nodes

or
Four Noded Facet - pressure spread to four nodes

The pressure table updates.
For each node, type the Node No. and Pressure (in the current units displayed) into the table.
Select the Direction in which the pressure acts.
- Local Z - parallel to the member local Z axis
- GX – parallel to the global X axis
- GY – parallel to the global Y axis
- GZ – parallel to the global Z axis
Click Add. The load item is added to the selected load case.