| Applies To | |
| Product(s): | AutoPIPE |
| Version(s): | ALL; |
| Area: | Modeling |
| Date Logged & Current Version | June 2022 12.08.01.010 |
Problem:
Are the results the same or different when running a linear analysis with Ultimate Force Gap option enabled or disabled in AutoPIPE?
Solution:
Yes, the results are exactly the same when Ultimate Force Gap is enabled or disabled during a linear analysis (note all dynamic analysis and SAM analysis are run as a Linear analysis).
But, why?
Easy, recall linear analysis limitations, specifically all Gaps, Friction, and soil properties values configured in the model are ignored. The only way to consider the Ultimate Force Gap spring rates in the model is to run as a Non-linear analysis.
Note: Please take a moment to review AutoPIPE help:
Help > Contents> Search Tab> enter "Understanding Ultimate Force Gap Supports" (include the quotes), press List Topics button, double click on the selected topic from the list provided to see more information.
See Also
W2261-9: All stiffness values are zero for the following bilinear support(s).