yade-users team mailing list archive

[nejib hadda <nejib.hadda@xxxxxxxxxxx>]

I don't see how to seperate these two phases on yade.
In fact what I want to do is to compact my specimen before launching the
calculus so that I get the density I wish to have.
But here, yade do both phases simultaniously, and the phase at which q
takes negatives values is the phase of compaction which corresponds to
the first ietrations.


Le mardi 08 décembre 2009 à 17:55 +0100, Luc Sibille a écrit :
> For which phase have you got negative q values? The compaction phase, 
> the deviatoric phase, ... ?
> 
> Hadda Nejib a écrit :
> > I don’t know if it is common in YADE to have negative values for the 
> > deviatoric stress q   in both triaxial test and triaxial test water for 
> > the first iterations (numerical problem) until the specimen is 
> > stabilized. I have also always had this sudden fall in the value of 
> > sigma22 after some iterations at the beginning of my simulations.
> > 
> > Shall I take the initial value of sigmaisocompactation near to value of 
> > the confining pressure to avoid such problem ?
> > 
> >  
> > 
> >  
> > 
> > 
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