Numerical or stability problems should be always fully resolved before interpreting the analysis results. Please note that if the program encounters zero [stiffness], it will give a warning and it will use a small value of stiffness to run the analysis. However, the user should still check the model to identify and remove the source of the zero stiffness.

To get information about numerical problems, use standard solver (Analyze > Set Analysis Options > Solver Options) and then review the [log file].

See Also

• Lost accuracy
• CSI Analysis Reference Manual, chapter "Frame Element", section "End Releases > Unstable End Releases"