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PostPosted: Sat Dec 02, 2017 10:44 am 
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Joined: Fri Jun 07, 2013 3:19 am
Posts: 14
The model is a steel frame. The section is 48.3mm x 3.6mm circular tube. The structure is symmetrical about it center.
So I expect that the buckling factor should be the same for X and Y direction translation buckling mode.
The dat file is attached.

The buckling factor results I get from Sofistik, Scia Engineer and Midas Civil are listed as below, the results of Scia and Midas are very close, and their results make more sense for me than Sofistik.

Sofistik Scia Midas
55.82 54.77 (X-dir translation) 54.67 (X-dir translation)
56.09 54.77 (Y-dir translation) 54.67 (X-dir translation)
57.48 55.91 (torsion about center) 55.82 (torsion about center)
58.78 57.62 (X-dir translation) 57.52 (X-dir translation)
60.67 57.62 (Y-dir translation) 57.52 (Y-dir translation)


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