Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN: 9780190698614
Author: Sadiku, Matthew N. O.
Publisher: Oxford University Press
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Question

No Normal stress acts on the neutral axis. Is it true or false? How?

Expert Solution
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Step 1

When a beam is subjected to a bending moment the beam undergoes either hogging or sagging. In both cases, the normal stresses are set up in the cross section of the beam. 

The equation of stain for a section of the beam can be written as,

ε=-yρ

The stress on the cross-section can be expressed as,

σ=-Eyρ

 

 

 

 

 

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