The figure shows a round shaft from a gear transmission. Gears are mounted at points A, C, and E. Supporting bearings are at B and D. The forces transmitted from the gears to the shaft are shown, all acting downward. Compute the maximum stress due to bending in the shaft, accounting for stress concentrations. Draw shear diagram and moment diagram. calculate the safety factor for the material selected. The material is 4150 OQT 1300. Assume that f1 = 9.5 KN , f2= 13.5 KN and f3 =18 KN

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Torsion

In mechanical engineering, torque, torsion, and twisting moment are three of the most important concepts which have different meanings. Torque is the consequence of a moment of a force that produces an angular acceleration in a body or induces rotational kinetic energy in a body. For instance, in an automobile, the power transmission shaft is a body that is always under rotation due to the external torque acting on it, this torque is created by the engine.