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Quick Euler Buckling question

  1. Mar 17, 2010 #1
    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. jcsd
  3. Mar 17, 2010 #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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