Question #692076 on Yade changed:
https://answers.launchpad.net/yade/+question/692076
Status: Answered => Open
Jiannan Wang is still having a problem:
Hello Robert,
Thank you for the help. I decrease the time step down to 1e-12, and it
is finally working. If I use dt = 1e-12 for few iterations, i.e. 500
iterations, and then switch back to 1e-9, seems also OK.
But all this only work on the exact pack file in the example (sphere file in
[1]). I try to create my own pack, with roughly the same dimension and
parasitical radius, still cannot get it works (even with dt = 1e-30 ...). Is
there something I missed on the packing side? I attach a MEW packing script:
############
from yade import export
young=1e9
tt=TriaxialTest(StabilityCriterion=.001,
compactionFrictionDeg=radians(3),internalCompaction=True,
radiusMean=-0.004,numberOfGrains=1000,
upperCorner=(0.05,0.05,0.05),lowerCorner=(0,0,0),thickness=0.01,radiusStdDev=0.3,sigmaIsoCompaction=-10000,maxMultiplier=1.+2e4/young,finalMaxMultiplier=1.+2e3/young)
O.run(20000,1)
export.text('CubicPack.spheres')
############3
Best regards
Jiannan Wang
[1]: https://gitlab.com/yade-
dev/trunk/-/blob/master/examples/ThermalEngine/5cmEdge_1mm.spheres
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