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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The strut has a square cross section a by a and is subjected to the bending moment M applied at an angle as shown. Determine the maximum bending stress in terms of a, M, and u. What angle u will give the largest bending
stress in the strut? Specify the orientation of the neutral axis for this case.

y
M
Transcribed Image Text:y M
Expert Solution
Step 1

Step 2

Length of side = a

Moment of inertia about z-axis, 

Moment of inertia about y-axis, 

Step 3

Moment about z-axis, 

Moment about y-axis, 

For maximum bending stress:

We can say that, at point C maximum tensile stress will occur where as at point A maximum compressive stress will occur and both are equal in magnitude.

Maximum bending stress, 

Here 

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