A flange coupling has an outside diameter of 200 mm and connects two 40 mm shafts. There are four 16 mm bolts on a 140 mm bolt circle. The radial flange thickness is 20 mm. If the torsional stress in the shaft is not to exceed 26 MPa, determine the shearing stress in the bolts if uniformly distributed. A. 8.5 N/mm2 B. 5.8 N/mm2 C. 6.5 N/mm2 D. 7.5 N/mm2

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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.