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Combined bending and torsion of a member is normally handled by

  • A.Averaging the two stresses
  • B.Treating the member as two separate beams
  • C.Superposing them, then combining at a point
  • D.Analysing torsion alone and ignoring bending

Answer: C

Bending gives direct stress and torsion gives shear stress, and both are found independently for a linearly elastic member. They are then combined at the critical point using a failure criterion such as maximum shear stress or von Mises.

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