PROBLEM NO. 2 A flanged bolt coupling connects two shafts. The bolt circle diameter is 250 mm in which there are 12 bolts. The allowable shear stress is 50 MPa in the shafts and 23 MPa in the bolts. One shaft is hollow with outside diameter of 100 mm, while the other one is solid of diameter 50 mm. Determine the ratio of the outside and inside diameter of the hollow shaft and the bolt diameter so that both shafts and the flanged bolt coupling are having the same strength in torsion.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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PROBLEM NO. 2
A flanged bolt coupling connects two shafts. The bolt
circle diameter is 250 mm in which there are 12 bolts.
The allowable shear stress is 50 MPa in the shafts and
23 MPa in the bolts. One shaft is hollow with outside
diameter of 100 mm, while the other one is solid of
diameter 50 mm. Determine the ratio of the outside and
inside diameter of the hollow shaft and the bolt diameter
so that both shafts and the flanged bolt coupling are
having the same strength in torsion.
Transcribed Image Text:PROBLEM NO. 2 A flanged bolt coupling connects two shafts. The bolt circle diameter is 250 mm in which there are 12 bolts. The allowable shear stress is 50 MPa in the shafts and 23 MPa in the bolts. One shaft is hollow with outside diameter of 100 mm, while the other one is solid of diameter 50 mm. Determine the ratio of the outside and inside diameter of the hollow shaft and the bolt diameter so that both shafts and the flanged bolt coupling are having the same strength in torsion.
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