yade-users team mailing list archive

[boon chiaweng <booncw@xxxxxxxxxxx>]

Bruno, it works :)  I reduced the maxMultiplier, as you've suggested.  Thanks!


Cheers,

CWBoon

From: booncw@xxxxxxxxxxx
To: yade-users@xxxxxxxxxxxxxxxxxxx
Date: Sat, 12 Dec 2009 01:13:24 +0800
Subject: Re: [Yade-users] Radius Expansion in triaxial test








Thank you Bruno, I was using the default values of 1.001, which is 1% of radius increment per timestep.  Yes, it is large.  I'll try with a lower one. And update the thread again.


Yours sincerely,

CWBoon

> Date: Fri, 11 Dec 2009 17:59:40 +0100
> From: bruno.chareyre@xxxxxxxxxxx
> To: yade-users@xxxxxxxxxxxxxxxxxxx
> Subject: Re: [Yade-users] Radius Expansion in triaxial test
> 
> Hi Boon,
> 
> It converges in less than 42k iterations usually, but this sort of 
> simulation is sensitive to parameters changes, and you perhaps picked a 
> bad combination of them.
> I see big oscillations, perhaps your radius factor for growing spheres 
> is too big?
> 
> Bruno
> 
> 
> 
> 
> boon chiaweng a écrit :
> > Hi, it's me again :).
> >
> > I've run a Triaxial Test on 10,000 grains with internalCompaction = 
> > True.  SigmaIso is set to 100, 000 Pa.  After 40 mins (42260 
> > iterations), the wall stresses do not converge, and the 
> > stabilityCriterion doesn't go down.  Porosity, on the other hand, has 
> > converged to 0.39.  It looks like the compaction stage with radii 
> > expansion is going on forever.
> >
> > Has anyone experienced this with internalCompaction (radii 
> > expansion)?  I've attached the recorded data.
> >
> >
> >
> > Yours,
> >
> > CWBoon
> >
> >
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