A shaft subjected to torsion experiences a pure shear stress x on the surface. The maximum principal stress on the surface which is at 45° to the axis will have a value
τ cos 45°
2τ cos 45°
τcos² 45°
2τ sin 45° cos 45°
Correct Option: D
σx = σy = 0, τzy = τ σ1 = τ σ1 = 2τ sin (45) cos (45) = τ
