Answered: the stress versus strain diagram,…

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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To manufacture a piston with a circular cross section, an alloy steel bar is required whose length is fixed and has a value of 35 cm and must withstand a compression load of 5.2 tons. For its design, a safety factor of 4/5 is suggested with respect to the yield stress. The shear modulus for that alloy is 80 GPa.
To know the resistance of this steel alloy, a compression test was carried out on a specimen of the same material, from this test the data table of stress against engineering deformation shown was obtained.

Image 1

1) Draw the stress versus strain diagram, naming axes and units
2) Define modulus of elasticity and calculate its value
3) Define yield effort and determine its value

Unit
Stress
deformation
(mm/mm)
(MPa)
0.001
206.8
0.002
413.7
0.003
434.4
0.004
441.3
0.005
441.3
0.006
441.3
0.007
441.3
0.05
620.5
0.1
668.8
0.15
682.6
0.2
689.5
0.25
641.2
0.3
572.3
0.35
511.6

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