A hollow shaft has to be designed for a marine engine delivering 1300 kW when running at 150 r/min. The maximum allowable shear stress is 65 MPa and the maximum torque to be transmitted by the shaft is 20 % greater than the mean torque. The internal diameter of the shaft is 50 % of that of the external diameter. Calculate: (a) the shaft dimensions and (b) the angle of twist of the shaft over 3 m when transmitting the above torque (G = 80 GPa).

A hollow shaft has to be designed for a marine engine delivering 1300 kW when running at 150 r/min. The maximum allowable shear stress is 65 MPa and the maximum torque to be transmitted by the shaft is 20 % greater than the mean torque. The internal diameter of the shaft is 50 % of that of the external diameter. Calculate: (a) the shaft dimensions and (b) the angle of twist of the shaft over 3 m when transmitting the above torque (G = 80 GPa).

Mechanics of Materials (MindTap Course List)

9th Edition

ISBN:9781337093347

Author:Barry J. Goodno, James M. Gere

Publisher:Barry J. Goodno, James M. Gere

Chapter3: Torsion

Section: Chapter Questions

Problem 3.7.12P

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