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Buckling analysis: Buckling Load Factor, factor of safety and design buckling load?

Question asked by Philip Eddy Eriksen on Mar 11, 2014
Latest reply on Mar 12, 2014 by Bill McEachern

Hello!

 

Situation:

I`m doing a buckling analysis on a "simply-supported" pinned-end solid beam  (IPE-profil) with high slenderness ratio and with a

concentraded/stationary load on the middle on top of the topflange. The topflange is retained against rotation about the

x-axis (the beams neutral axis).  The results from the simulation then show buckling of the web. The load is 1 N, so the critical buckling load

will be 1 N multiplied with the BLF if I understanded this correctly?

 

The main question:

The critical buckling load is based on Euler`s theory and elastic behavior, right?

How do I decide the factor of safety in witch im searching for the design buckling load?

 

I have read that a safety factor of 4 is a good estimate, but how is this number determined?

 

Thanks!

 


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