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Discussion

Local buckling of a stiffened panel refers to

  • A.Yielding of the skin
  • B.Buckling of the skin or the flanges
  • C.Buckling of the entire panel as a wide column
  • D.Failure of the rivets

Answer: B

Local instability affects individual elements while the panel as a whole remains straight. Overall or global buckling, in which the stiffener and its attached skin buckle together as a column, is the separate mode that must also be checked.

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