Machine design Design a shaft and flange for a Diesel engine in which protected type of flange coupling is to beadopted for power transmission. The following data is available for design:Power of engine = 75 kW; speed of engine = 200 r.p.m.; maximum permissible stress in shaft =40 MPa; maximum permissible twist in shaft = 1° in length of shaft equal to 30 times thediameter of shaft; maximum torque = 1.25 × mean torque; pitch circle diameter of bolts = 3 xdiameter of shaft; maximum permissible stress in bolts = 20 MPa.Find out: 1. Diameter of shaft, 2. number of bolts, and 3. diameter of bolts.

Answered: permissible twist in shaft aximum…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

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Machine design

Design a shaft and flange for a Diesel engine in which protected type of flange coupling is to be
adopted for power transmission. The following data is available for design:
Power of engine = 75 kW; speed of engine = 200 r.p.m.; maximum permissible stress in shaft =
40 MPa; maximum permissible twist in shaft = 1° in length of shaft equal to 30 times the
diameter of shaft; maximum torque = 1.25 × mean torque; pitch circle diameter of bolts = 3 x
diameter of shaft; maximum permissible stress in bolts = 20 MPa.
Find out: 1. Diameter of shaft, 2. number of bolts, and 3. diameter of bolts.

Expert Solution

Step 1: Write the given data with suitable variables-

A flange coupling is a driving connection between rotating shafts that consists of two flanges, one of which is mounted at the end of each shaft, and the two flanges are bolted together to complete the drive. A flange coupling is a device that connects two tube ends in a flush, sealed way.

$space space space space space space P equals 75 space kW space space space space space space N equals 200 space rpm tau subscript m a x end subscript space equals 40 space MPa theta subscript m a x end subscript equals 1 degree space space space space space space L equals 30 d T subscript m a x end subscript equals 1.25 T subscript mea n end subscript space space space space D subscript 1 equals 3 d space space space space space tau subscript b equals 20 space MPa$

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