nvn: it's true. But in steel structural engineering, buckling usually is about the behavior explained with Euler formula, and not with the stress failure criteria.
Hi, i have some annotations:
- In this case, the kind of stress is bending, not buckling.
- I recommend you to consult the "Specification for Structural Steel Buildings (ANSI/AISC 360-10)": http://www.aisc.org/WorkArea/showcontent.aspx?id=26516 (go to F.8 chapter).