<div dir="ltr">Dear Dr. Victor<div>I am learning how to compute elastic constant. So I am keeping my case simple. So I found the given reference values from a paper in which theoretical results were compared with these values. Could you please make your wording simple as I am at the learning stage in this direction.</div><div>Thank you</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Sun, Jan 11, 2015 at 2:37 AM, Víctor Luaña <span dir="ltr"><<a href="mailto:victor@fluor.quimica.uniovi.es" target="_blank">victor@fluor.quimica.uniovi.es</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span class="">On Sun, Jan 11, 2015 at 01:42:59AM +0800, Muhammad Sajjad wrote:<br>
> Dear Users<br>
><br>
> I am using WINE2K 11 version and computing elastic constants for Fe.<br>
><br>
> The computed elastic constants are<br>
> c11 = 304.760951<br>
> c12 = 118.317319<br>
> c44 = 367.255487<br>
><br>
> I want to compare these values with<br>
> C11 = 297.83 GPa, C12 = 141.89 GPa, C144 = 106.73 GPa<br>
><br>
</span>> Please suggest the possible solution. [...]<br>
<br>
What do you want? If your objective is that your calculation agrees<br>
with the experiment you have missed the intention of science. What<br>
you should do is making sure what are the real experimental values and<br>
analyze their errors, what is the influence of your calculation model<br>
parameters, what are the systematic errors and their influence in your<br>
model, ...<br>
<br>
The importance of thermal effects, for instance. If you do your work you<br>
will contribute to science. Comparing your results with the experimental<br>
values is not the objective. Learning from the comparison is.<br>
<br>
Best regards,<br>
Dr. Víctor Luaña<br>
<br>
--<br>
. . "La suma de la mediocridad y de la creatividad es<br>
/ `' \ constante: a más de la una menos de la otra"<br>
/(o)(O)\ (Jorge Wasenberg, 2015)<br>
/`. \/ .'\ "mediocrity+creativity=constant"<br>
/ '`'` \ (First Principle of thermodynamics,Universal version)<br>
| \'`'`/ | "Lo mediocre es peor que lo bueno, pero también es peor<br>
| |'`'`| | que lo malo, porque la mediocridad no es un grado, es una<br>
\/`'`'`'\/ actitud"<br>
===(((==)))==================================+=========================<br>
! Dr.Víctor Luaña ! Mediocrity is worse than<br>
! Departamento de Química Física y Analítica ! good, but is also worse<br>
! Universidad de Oviedo, 33006-Oviedo, Spain ! than bad, because<br>
! e-mail: <a href="mailto:victor@fluor.quimica.uniovi.es">victor@fluor.quimica.uniovi.es</a> ! mediocrity is not a grade,<br>
! phone: <a href="tel:%2B34-985-103491" value="+34985103491">+34-985-103491</a> fax: <a href="tel:%2B34-985-103125" value="+34985103125">+34-985-103125</a> ! is an attitude<br>
+--------------------------------------------+<br>
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