mindlin contact law

Hi,

Please post a script with the parameters you are using in your simulations to reproduce the error. Saying "it is not working because some particles are flying out" does not necessarily mean that the contact law is not working but it may well be due to an improper combination of input parameters you are using (strain rate etc.) - have you done any calibration beforehand?

I have used the law before with boxes and periodic boundaries and never found a problem.

Cheers,
Chiara

On 31 Dec 2013, at 00:06, Seungcheol Yeom wrote:

> New question #241471 on Yade:
> https://answers.launchpad.net/yade/+question/241471
>
> Hello all,
>
> I am wondering whether a mindlin contact law is only used for the sphere interaction.
> I have tried to use the contact law (mindlin) for the tri-axial consolidation instead of using a cundall strack but it is not working.
> It is appeared that all paricles near the top and bottom of the plates are flying out.
> So, I think I have to use two different contact laws somthing like mindlin for the spheres and cundall for box, wall, facet if the mindlin contact law only works for the spheres interaction.
> Is this possible? or is there any method I can do?
> Thank you very much for your help.
>
> Best,
>
> Seungcheol
>
>
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Thanks for the response Chiara!

Can you please let me know what the calibration means in YADE? Is it like some type of coding? or somethig else?

Best,

Seungcheol

Hi Seungcheol,

First of all I would post your script and highlight any chances you have done from the version you said was working fine. When I talk about calibration I mean the approach you take to select the input parameters of your simulations, be them for use in YADE or another DEM code. Surely if you decide to use a contact law in place of another, you already have some ideas on how to determine those parameters or where they should come from (contact parameters, geometrical parameters etc.).

Chiara