Current Revision posted to RAM | STAAD Wiki by Sye on 11/26/2019 8:31:15 PM
| Applies To | |||
| Product(s): | STAAD.Pro | ||
| Version(s): | All | ||
| Environment: | N/A | ||
| Area: | Changing Beta Angle of a Member | ||
| Subarea: | N/A | ||
| Original Author: | Bentley Technical Support Group | ||
I am analyzing a large 3D structure. I changed the beta angle of one of the members to 90. I expected the MY and MZ for the two scenarios ( beta =0 and beta=90) to get interchanged. However that does not seem to happen. Why ?
The Mz and My would not simply get interchanged when you apply a beta angle to 90 for every situation. The same would be true if you are analyzing a beam in isolation without considering any effect from the rest of the structure. However when a beam is part of a bigger structure, the beam’s local stiffness in each direction would affect the global stiffness of the structure along each DOF. Depending on that there will be a redistribution of the forces which would result in different moments/shears.
Tags: Changing Beta Angle