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Exam sample question in Applied Mechanics

A solid shaft 125mm did transmits 600kW at 300 revolutions/minute. It is also subjected to a bending moment of 9kN-m and to an end thrust. If the maximum principal stress is limited to 80MPa, determine the permissible end thrust.

Also, determine the position in which the principal stress acts, and draw a diagram showing the position of the plane relative to the torque, and the plane of the bending moment applied to the shaft.

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According to the diagrams and calculations, it is easy ...

Solution Summary

The answer is resolved using trigonometric identities, Mohr's circle, and the properties of both normal and shear stress. These parameters are looked at in relation to principal direction.