Quick Euler Buckling question

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I should probably know the answer to this but anyway....

I want to compute the critical buckling load for a simple 3D rectangular cross-section beam, though the thickness in the z-direction is small.

attachment.php?attachmentid=24439&stc=1&d=1268832382.jpg


If a load is applied in the negative y direction, which direction do I use for my second moment of area value? Ixx or Iyy?

Thanks for any info.
 

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  • #2
Mapes
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How about trying both, then using the results to decide what buckling plane is most likely?
 

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