Perform Buckling Analysis tab
Used to instruct STAAD.Pro to perform a buckling analysis.
Refer to TR.37.4 Buckling Analysis for additional information.
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Iterative method | When this option is selected, the program will perform a
P-Delta analysis including Kg Stiffening (geometric stiffness of members &
plates) due to large & small P-Delta effects. If a non-singular stiffness matrix
can be created, then buckling has not occurred. Then the load is increased from the
last increment repeatedly until buckling does occur. Then the load is decreased
halfway back to the prior increment. This bounds the buckling factor between the last
2 increments. Then STAAD.Pro proceeds to halve the interval
until either the change between increments is 0.1% of each other, or the specified
number of increments has been exceeded. The resulting factor is reported in the
output file. The buckling deformed shape is simply the deformed shape from a static
analysis with the near buckling load applied. This could appear more like a crushing,
small displacement shape rather than a buckling mode shape. At least 15 iterations
are recommended. Buckling will be applied to all primary cases.
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Eigen method | This buckling method may only be used if an Advanced Analysis license is available. When using the
Advanced Solver, the corresponding buckling modesare included in the output file. |
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Print Option | Standard STAAD.Pro analysis print options:
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