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ETABS captures both sources of nonlinear geometry with great accuracy, well within the 3% and 5% limitation of AISC. This capability is validated in the benchmark-problem results, shown below, in which a column is divided into two segments and subjected to compression and a uniform lateral load. This is . Meshing the column may be required to improve accuracy of P-δ effect in pinned condition cases and for axial loads close to buckling.
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Attachments
- Case 1 ETABS model (zipped EBD file)
- Case 2 ETABS model (zipped EBD file)
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