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Typical warning message from LUSAS Solver text output file (*.OUT):
***WARNING*** ELEMENT P, NODE
Q, VARIABLE R HAS SMALL PIVOT = S OR DIAGONAL DECAY=T (GT 0.1E+05)
Most common causes & links to solutions
The most common cause of such a message is that there are
insufficient supports assigned to the model. It is necessary to
ensure that there exist supports that restrain the entire model from
rigid body movements. The model should not be free to translate
or rotate freely. More
common causes on a page of related warnings
How to find the target Node or
Element:
Solver error or warning messages are
also scanned from Solver .out file and reported in Modeller Text
Output window. By default the Text Output window appears at the
bottom of the graphics window just above the Status Bar. This displays messages and warnings during a modelling session.
Specific objects referred to in error and diagnostic messages in the
text window by ID number in the form "Element P" may be
identified using the identify object dialog. The “Identify
Object" dialog is invoked by double clicking on the message
text. From this dialog the identified object may be selected, moved
to the centre of the screen, scaled to fill the screen, have its
properties displayed, or identified by an annotation arrow or a
temporary indicator.
Element P can also be located in the
model using Advanced Selection, activated by right-
clicking with the mouse in the graphics window, or via:
Edit > Advanced Selection
Continued difficulties? Try
the pivot checklist
More on the diagonal decay measure used in the Frontal
solution method
and in the LUSAS Theory Manual, section 2.2.2.
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