(1) A flange coupling connects two 50mm shafts. The flanges are fitted with 4 bolts of SAE1040 steel on an 80mm bolt circle. The shaft runs @ 360 rpm & transmits 30kW. Assume a factor of safety 4, ultimate tension of 490x10°kPa; ultimate shear of 400x1o’kPa, determine: (a) the torque transmitted in kN-m; (b) the minimum diameter of the bolts required based on commercial sizes; (c) the minimum thickness of the flange.

(1) A flange coupling connects two 50mm shafts. The flanges are fitted with 4 bolts of SAE1040 steel on an 80mm bolt circle. The shaft runs @ 360 rpm & transmits 30kW. Assume a factor of safety 4, ultimate tension of 490x10°kPa; ultimate shear of 400x1o’kPa, determine: (a) the torque transmitted in kN-m; (b) the minimum diameter of the bolts required based on commercial sizes; (c) the minimum thickness of the flange.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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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

(1) A flange coupling connects two 50mm shafts. The flanges are fitted with 4 bolts of SAE1040 steel
on an 80mm bolt circle. The shaft runs @ 360 rpm & transmits 30kW. Assume a factor of safety 4,
ultimate tension of 490x10°kPa; ultimate shear of 400x10°kPa, determine:
(a) the torque transmitted in kN-m;
(b) the minimum diameter of the bolts required based on commercial sizes;
(c) the minimum thickness of the flange.

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