The solid circular drill rod AB is made of a steel that is assumed to be elastoplastic with TY = 22 ksi and G = 11.2 x 106 psi. Knowing that a torque T = 73 kip-in. is applied to the rod and then removed, determine the permanent angle of twist of the rod. The permanent angle of twist of

The solid circular drill rod AB is made of a steel that is assumed to be elastoplastic with TY = 22 ksi and G = 11.2 x 106 psi. Knowing that a torque T = 73 kip-in. is applied to the rod and then removed, determine the permanent angle of twist of the rod. The permanent angle of twist of

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

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Concept explainers

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.

Question

The solid circular drill rod AB is made of a
steel that is assumed to be elastoplastic
with TY = 22 ksi and G = 11.2 x 106 psi.
Knowing that a torque T = 73 kip-in. is
applied to the rod and then removed,
determine the permanent angle of twist of
the rod. The permanent angle of twist of
the rod is

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The composite shaft shown consists of a 0.2-in.-thick brass jacket (Gbrass= 5.6 × 106 psi) bonded to a 1.2-in.-diameter steel core (Gsteel=11.2 × 106 psi). Knowing that the shaft is being subjected to the torques shown, determine the largest angle through which it can be twisted if the following allowable stresses are not to be exceeded: τsteel=15 ksi and τbrass= 8 ksi.