Question

Torsion in circular shafts is analyzed to determine

• A. Bending moments
• B. Shear stresses
• C. Compressive stresses
• D. Tensile stresses

Hint:

Torsion Effects. Applying torque (T) to a shaft causes twisting (angle of twist) and induces internal shear stresses (\(\tau\)) within the cross-section.

Answer 1

The Correct Option is B

Torsion refers to the twisting of a structural member (like a shaft) due to an applied torque.
This twisting action causes internal shear stresses within the material of the shaft.
The shear stress (\(\tau\)) varies linearly with the radial distance (\(r\)) from the center of the circular shaft and is calculated using the torsion formula \(\tau = Tr/J\), where T is the applied torque and J is the polar moment of inertia.
While torsion also causes shear strains and an angle of twist, the primary stress component induced and analyzed is shear stress.
Bending moments cause normal stresses (tensile and compressive).