Subject: Machine Design -I

Topic: Shaft, Keys and Coupling

Difficulty: High

The following stresses are induced in the shafts:

• Shear stresses due to the transmission of torque (i.e. due to torsional load).
• Bending stresses (tensile or compressive) due to the forces acting upon machine elements like gears, pulleys etc. as well as due to the weight of the shaft itself.
• Stresses due to combined torsional and bending loads.