# What's the usefulness of maximum stress calculated on Secant's formula for buckling?

For comparison: in Euler's formula, we calculate the critical force such that when the column is subjected to it, it buckles. As far as I understand, the yield strenght of the material doesn't really matter.

However, when facing eccentric load, secant formula is used and a maximum strain is calculated, instead of a critical force. Does it makes sense then to use yield strength as a maximum admissible strength?

Edit: also, when derivating the formula for the maximum strain, one already considers the compressible strain and the bending combined. Thus, when calculating the maximum strain, I don't need to further make any considerations about their interations, correct?

• If you are clmbing a ladder, would you want someone to have calculated the buckling loads correctly? Feb 7 '20 at 15:23
• Sure. I don't know if my question wasn't clear: Im trying to understand the correct methodology to calculate a column under axial force, not to ignore it. Feb 7 '20 at 16:45