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(a) the maximum shear stress in the shaft; and (b) the angle of twist in degrees. Use G =12 x 106 psi for steel

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 3.3.12P: A propeller shaft for a small yacht is made of a solid steel bar 104 mm in diameter. The allowable...

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Concept explainers

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.

Question

A hollow steel shaft, 6 ft long, has an outer diameter of 3 in. and an inner diameter of 1.5 in. The shaft is transmitting 200 hp at 120 rev/min. Determine (a) the
maximum shear stress in the shaft; and (b) the angle of twist in degrees. Use G =12 x 106 psi for steel

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