View this discussion of the fundamentals of the buckling phenomenon and conceptual difficulties encountered by the researcher to understand the buckling problem completely. The concept of unstable equilibrium is discussed.
The Stardyne Advanced solver of STAAD was used to analyze a large number of problems that were solved theoretically in Buckling Strength of Metal Structures by Hans H. Bleich.
Finally, a very complex buckling problem of 120 feet long strut used in Bechtel's Central Artery Project, Boston, was discussed. A step-by-step procedure to evaluate its buckling strength using STAAD was presented