A. To specify a nonlinear analysis
To instruct the program to perform a static, geometric nonlinear analysis of the structure, use the following procedure.
Note: This requires a STAAD.Pro Advanced Analysis license.
The following limitations should be noted regarding static, geometrically nonlinear analyses:
- Large rotations in one step should be avoided by using more steps.
- Very large displacements, unstable structures, and/or post-buckling should be avoided.
- Geometrically nonlinear only. No tension/compression or contact is considered. No yield, plastic moment hinges or bilinear behavior is considered.
- Solids cannot be used for this analysis method.
- Temperature loads are not supported for geometric nonlinear analysis.
The maximum displacement should be reviewed for nonlinear analyses because this analysis type may result in buckling or large displacements.