| Applies To | |
| Product(s): | AutoPIPE |
| Version(s): | ALL; |
| Environment: | N/A |
| Area: | Report |
| Original Author: | Bentley Technical Support Group |
| Date Logged & Current Version | Jan. 2017 10.01.00.09 |
Problem:
When reviewing the maximum displacement of a mode shape, expect that the normalized maximum displacement will equal 1.0. Instead, it equals some random number less than 0.5. Why?
Solution:
AutoPIPE outputs mass-normalized modal shape amplitudes. I.e. the mode shape PHI is divided by
PHIT*M*PHI = modal mass
where:
PHI = mode shape vector
M = mass matrix