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Clamping the unloaded edges of a plate rather than simply supporting them

  • A.Lowers the buckling coefficient
  • B.Leaves the coefficient unchanged
  • C.Prevents buckling entirely
  • D.Raises the buckling coefficient

Answer: D

Restraining the rotation at the edges makes the buckled shape more expensive in strain energy, so the critical stress rises, roughly by a factor of one and three quarters for a long plate. Real riveted edges fall somewhere between the two ideals.

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