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Re: [Question #688681]: Contact laws and Input stiffness directly rather than young parameter

 

Question #688681 on Yade changed:
https://answers.launchpad.net/yade/+question/688681

    Status: Open => Answered

Chareyre proposed the following answer:
Could you please provide a blamelist of papers where, in 3D, stiffness is
defined in force/length instead of force/area?
Bruno

Le jeu. 13 févr. 2020 23:44, ehsan benabbas <
question688681@xxxxxxxxxxxxxxxxxxxxx> a écrit :

> Question #688681 on Yade changed:
> https://answers.launchpad.net/yade/+question/688681
>
>     Status: Answered => Open
>
> ehsan benabbas is still having a problem:
> Bruno, thank you for your opinion, however, mine is totally different in
> the view of the research-side. The problem is the way Yade has been
> coded is not consistent with the most number of papers in
> micromechanics. To study micromechanics and the effect of contacts,
> researchers tend to have control over the stiffness values rather than
> the young parameter which is oversimplified. in this case more errors
> will be produced rather than the use of stiffness. In addition to that,
> researchers should be able to compare their works and results in order
> to make a conclusion. Otherwise, it is non-sense to only close the eyes
> and study without having a clear goal. This is why most of the users,
> particularly in micromechanics and geomechanics, like to use "Kn" and
> "Ks" as the input variables for contact law. in addition to that, such a
> long run-time is a serious obstacle in the way of researchers in this
> field. Therefore, paying attention to such issues of yade comes into the
> topic and this leads to using tricks instead of modifying the original
> code (as many similar cases have happened in FEM).
>
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