yade-users team mailing list archive

[Chiara Modenese <chiara.modenese@xxxxxxxxx>]

Hi,


I give you the suggestion to make a comparison with your results by Yade for 
the Triaxial with other results from another trusty code that you might know 
using the dem. Take an example and try to match the solution with both codes. 
Keep in mind that you might find some small differences anyway (the two codes 
might use different algorithms as well as different implementation for contact 
stiffnesses and so forth).


Chiara


>----Messaggio originale----
>Da: nejib.hadda@xxxxxxxxxxx
>Data: 26/01/2010 14.15
>A: "Chiara Modenese"<chiara.modenese@xxxxxxxxx>
>Cc: <yade-users@xxxxxxxxxxxxxxxxxxx>
>Ogg: Re: [Yade-users] Damping/Porosity
>
>Hello,
>
>Chiara,  what kind of influence on results when changing the damping
>force ?
>for me something still inaccurate with yade in triaxial test for a dense
>material and I'm not completly satisfied even if I've got the porosity
>and the coordination number I wanted, You know what is confusing me the
>most?
>
>1- The value of the peak reached by the deviatoric stress q=S22-(S11
>+S33)/2 compared with the confinement stress S11 (=S33).
>
>2- The axial deformation corresponding to the peak (which is quite
>larger compared to reality)
>
>So my question here, is that Did you find that the damping forces or
>momentum, Wall velocity can have impact on these two points ?
>
>I confirm that changing the wall thickness (by default on yade about 1%
>of the box edge dimension) has influence on these values, but I don't
>know if  changing the wall thickness can keep the problem well
>positioned.
>
>Can somebody tell more about it ? 
>
>
>Le mardi 26 janvier 2010 à 12:23 +0100, Chiara Modenese a écrit :
>> Bruno,
>> 
>> BTW, concerning the porosity I have seen that also changing the value
>> of damping influences its value (togheter with the friction and the
>> PSD). Is it a good idea to play also with damping? I mean, for sure
>> damping affects the simulation, but this influence could move away
>> from a sensible solution?
>> 
>> Cheers, Chiara
>> 
>> 
>> _______________________________________________
>> Mailing list: https://launchpad.net/~yade-users
>> Post to     : yade-users@xxxxxxxxxxxxxxxxxxx
>> Unsubscribe : https://launchpad.net/~yade-users
>> More help   : https://help.launchpad.net/ListHelp
>
>