Answered: 80 kN 80 kN 90 cm 90 cm N.A. 80 kN 80…

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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Question

Calculate the maximum normal stress in the cross section of the beam shown in the figure, whose radius is 9 cm.

80 kN
80 kN
90 cm
90 cm
N.A.
B
80 kN
80 kN
(a)

Expert Solution

Step 1: Given data

Since it can be seen from the figure that the loading is symmetrical about the mid-point of the beam, the maximum bending moment will be acting on the mid-point of the beam. The maximum normal stress is associated to the maximum bending moment in the beam because the bending moment always produces normal stress.

So, to find the maximum value of the normal stress, we must first calculate the maximum bending moment acting on the beam, which is acting on the mid-point of the beam in the given beam.

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