One motor delivers 100 hp to a 3-inch shaft that rotates at 210 rpm. The pulleys take 50 hp, 30 hp, and 20 hp at B, C, and D, respectively. Determine the constant stresses in the three shafts and the angle of twist of end D with respect to A, in Fig. p3.64

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Design of Shafts and Shaft Components

The shaft is basically defined as the machine element that rotates, is in circular cross-section, it is majorly used to transfer the power from one part of the system to another, or from a power generating machine to a power absorbing machine. The shaft is supported on bearings and is rotated with the help of a set of gears or pulleys that are used for the power transmission. Bending moment, torsion, and an axial force act upon the shaft. Designing of shaft primarily involves determining stresses at a critical point in the shaft that is arising due to loading.