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A column's Euler critical stress is \( 400 \) MPa in a material yielding at \( 300 \) MPa. The column will

  • A.Fail inelastically before that load
  • B.Fail by elastic buckling at 400 MPa
  • C.Carry 400 MPa safely
  • D.Fail at 700 MPa

Answer: A

The Euler formula has returned a stress the material cannot sustain elastically, which signals that the column is too short for the elastic theory. A Johnson or tangent modulus treatment applies instead, and the true capacity lies below yield.

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