Answered: I have been working on this Solid Mech…

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

I have been working on this Solid Mech problem for a while and have gottem nowhere

we are supposed to be finding the modulus of elasticity for a set of data (attached). I have made an excel sheet from this to finda stress strain graph. I understand how the modulus of elasticity is (E = (delta stress)/(delta strain)) but I cannot find the propotional limit that I need to find delta stress and delta strain

Load
(kN)
0
4.67
9.19
13.81
18.26
22.96
27.49
32.04
36.55
41.24
45.66
50.32
Change in
Length
(mm)
0
0.0194
0.0365
0.057
0.073
0.1175
0.1403
0.1642
0.195
0.2292
Load
0.2748
(kN)
54.79 0.358
0.0969 70.91 2.9207
59.16 0.5472
66.44
63.12 0.9576
Change
in Length
(mm)
69.19 2.1752
72.08
71.76 3.6674
71.94
72.1 4.4894
71.49
1.5208
71
70.81
5.3193
6.0329
6.8663
7.6734
fracture

Expert Solution

Step 1: Given data

The given table represents the load and the change in length of a reference element. Other values are not given.

But the question here is how to find the value of delta stress and delta strain from the stress-strain graph and ultimately how to find the value of modulus of elasticity.

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