A hollow thin disc of 60 cm outer diameter and 40 cm inner diameter is running at 1440 r.p.m. Calculate the maximum intensities of radial and hoop stresses. At what radius the radial stress is maximum? Density of disc material =7800 kg/m3 Poisson's ratio = 0-30.

A hollow thin disc of 60 cm outer diameter and 40 cm inner diameter is running at 1440 r.p.m. Calculate the maximum intensities of radial and hoop stresses. At what radius the radial stress is maximum? Density of disc material =7800 kg/m3 Poisson's ratio = 0-30.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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Concept explainers

Stress transformation

The term stress indicates the measure of internal forces that develop due to an external force's application on an object. When a specific external force is applied to an object, internal stress generates in the material. The value of stress can obtain by taking the ratio of the externally applied force and cross-sectional area of the object. There are different types of stress depending on the type of external force.

Question

A hollow thin disc of 60 cm outer diameter and
40 cm inner diameter is running at 1440 r.p.m.
Calculate the maximum intensities of radial and
hoop stresses. At what radius the radial stress is
maximum? Density of disc material =7800 kg/m3
Poisson's ratio = 0-30.

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