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Vlasov's theory of thin-walled beams was developed to handle

  • A.Restrained warping in open sections
  • B.Pure bending of solid sections
  • C.Buckling of plates
  • D.Shear lag in closed sections

Answer: A

Vlasov added a warping term to the classical torsion theory, introducing the warping constant and the bimoment. It is essential for open sections built into rigid supports, where the St Venant solution alone would badly underestimate the stresses.

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