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General Computational Modeling Discussion

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December 6, 2020 10:17 am

I have recently faced a problem related to calculating Young's Modulus.

According to the Hook law it is slope of Stress-Strain curve in the elastic area. But surprisingly I can't find even 1 case in which this Modulus is calculated rightly. for example:

1- Attached Paper: salehghaffari2011

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December 6, 2020 10:31 am

As you see, the Young Modulus gives around 16 MPa by pic below:

But he claimed that is 210 MPa. (of course for steel it is about this value )

Where I make a mistake?