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.
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Either:
The
Add New Load Items dialog opens.
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Select the tab.
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Select either:
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Three Noded Facet -
pressure spread to three nodes
-
Four Noded Facet - pressure spread to four
nodes
The pressure table updates.
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For each node, type the Node No. and
Pressure (in the current units displayed) into the
table.
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Select the
Direction in which the pressure acts.
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Local
Z - parallel to the member local Z axis
-
GX – parallel
to the global X axis
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GY – parallel
to the global Y axis
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GZ – parallel
to the global Z axis
-
Click
Add.
The load item is added to the selected load
case.