The element leaving the bend must define the downstream side of the bend. Do not define dummy legs on the element immediately following a bend.
Define the true length of the dummy leg for DX, DY, and DZ on the Classic Piping Input dialog.
Input and output plots of the dummy leg always show the dummy leg going to the bend tangent intersection point.
During error checking, the software generates a warning message for each dummy leg/bend model. Verify that the warning message description is accurate.
The element type used is based on your engineering judgment. A dummy leg could be
a pipe, a rigid element, a structural member, or a CNode. Your decision depends on
the relative geometries of the component and the dummy to represent the mathematical
model. One example is shown here.
Example
Horizontal Dummy Leg on Midpoint of Bend
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The dummy leg is defined as a zero weight rigid supported on one end by a spring can. |
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