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Curve Fitting an equation

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Arjun Siddharth
Arjun Siddharth on 20 Apr 2021
Commented: Arjun Siddharth on 20 Apr 2021
Hi, I was wondering if someone could help me in developing a code to curve fit equaion 16. The estimate expression obtained is equation 17. I wanted to verify this by coding. Any help is appreciated. Thanks!
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William Rose
William Rose on 20 Apr 2021
@Arjun Siddharth, I inspected the full paper. It is not at all clear to me what the authors are doing. For example, it is not clear whethere the "length" in the top row of table 1 is L or x. And if we knew that, then we would still not know the value for the other quantity (x or L). I also note that Table 1 contains only five (x,) pairs (or five (L,pairs). As I noted earlier, equation 17 has four constants. It is not reasonable to fit four parameters if you only have five data points. Since the authors have not explained their method clearly, I would not spend time trying to reproduce their results.
Arjun Siddharth
Arjun Siddharth on 20 Apr 2021
Oh okay. Actually, in my code the value of EI, and L has changed. Any idea how I can modify mew_bar expression to incorporate this change?

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Accepted Answer

William Rose
William Rose on 20 Apr 2021
@Arjun Siddharth, EI appears as a constant factor in the denominator of eq. 16 for . Therefore if you use a different value of EI than the authors, then multiply by the factor .
For different vaues of L, just plug in L into equation 17.

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