New question #688458 on Yade:
https://answers.launchpad.net/yade/+question/688458
Hi
I encountered a weird thing..
I was preparing a dense sample(composed of polydisperse spheres initially
generated by makeCloud and the friction angle is set to zero) by using
PeriTriaxController.
A mini script goes like below:
.............................................................................................................................................................................
triax=PeriTriaxController(
dynCell=True,
mass=0.2,
maxUnbalanced=stabilityThreshold,
relStressTol=0.005,
growDamping=0,
goal=(-1000,-1000,-1000),
stressMask = 7, #the vertical direction of wall is controlled by rate
of strain
globUpdate=1000,
maxStrainRate=(0.01,0.01,0.01),
doneHook='generating1()'
)
newton=NewtonIntegrator(damping=damp) #set non-viscous damping
#set one triaxial loop
O.engines=[
ForceResetter(),
InsertionSortCollider([Bo1_Sphere_Aabb()]),
InteractionLoop(
[Ig2_Sphere_Sphere_ScGeom()],
[Ip2_FrictMat_FrictMat_FrictPhys()],
[Law2_ScGeom_FrictPhys_CundallStrack()]
),
GlobalStiffnessTimeStepper(active=True,timeStepUpdateInterval=100,timestepSafetyCoefficient=0.9),
triax,
newton,
PyRunner(iterPeriod = 1000, command = 'history()')
]
def generating1():
newton.damping = 0.4
triax.relStressTol=0.005
triax.goal=(-2000,-2000,-2000)
triax.doneHook='generating1_1()'
.............................................................................................................................................................................
Things go quite well and the porosity is below 0.4 after 24h's compression. And
the visualization is right a compacted sample inside the cell box.
And then I want to export the sphere information about its position and
radius.So I typed export.text(filename='').
But when I ymport this sample infomation, i got a cluster of exploded spheres(
each far away from the other), which is totally different from what I saw in
the sampleGeneration.py.
Could you help me with this?
Thanks
Japser
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