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joe465
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Young's Modulus of Elasticity Problems - URGENT
Calculate Young's Modulus of Elasticity for the three materials using the graphs only.
Stress (N/m2) Strain
70 0.06
100 0.11
150 0.22
200 0.35
220 0.48
ε = Stress / Strain
I believed that to calculate Young's Modulus was a case of stress over strain but surely it should give the same value throughout the elastic region to be a constant. The stress and strain results provided must be correct as they were already provided.
70 / 0.06 = 1166.66
100 / 0.11 = 909.09
150 / 0.22 = 681.82
200 / 0.35 = 571.43
220 / 0.48 = 458.33
So my main question is why are these so different, am i applying an incorrect formulae. Please note i was only using the formulae because i wanted to check i was getting it right and wasn't sure how to use the graphs to obtain the value.
How do a derive the youngs modulus from a Stress-Strain graph?
Please help as i only have 1 more day before this is due in.
Many thanks, Joe
Homework Statement
Calculate Young's Modulus of Elasticity for the three materials using the graphs only.
Stress (N/m2) Strain
70 0.06
100 0.11
150 0.22
200 0.35
220 0.48
Homework Equations
ε = Stress / Strain
The Attempt at a Solution
I believed that to calculate Young's Modulus was a case of stress over strain but surely it should give the same value throughout the elastic region to be a constant. The stress and strain results provided must be correct as they were already provided.
70 / 0.06 = 1166.66
100 / 0.11 = 909.09
150 / 0.22 = 681.82
200 / 0.35 = 571.43
220 / 0.48 = 458.33
So my main question is why are these so different, am i applying an incorrect formulae. Please note i was only using the formulae because i wanted to check i was getting it right and wasn't sure how to use the graphs to obtain the value.
How do a derive the youngs modulus from a Stress-Strain graph?
Please help as i only have 1 more day before this is due in.
Many thanks, Joe