Yade

What does dynCell = True mean in PeriTriaxController?

Asked by Rong Zhao

Hi, everybody!
I am confused about something with the tutorial of Periodic triaxial test. To be specific, I don't understand that What does dynCell = True mean in PeriTriaxController? And why maxStrainrate takes the value of (10, 10, 10)?
Here is the part codes in the tutorial.

PeriTriaxController(label='triax',
  # specify target values and whether they are strains or stresses
  goal=(sigmaIso,sigmaIso,sigmaIso),stressMask=7,
  # type of servo-control
  dynCell=True,maxStrainRate=(10,10,10),
  # wait until the unbalanced force goes below this value
  maxUnbalanced=.1,relStressTol=1e-3,
  # call this function when goal is reached and the packing is stable
  doneHook='compactionFinished()'
 ),

Thanks

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Robert Caulk (rcaulk) said : 		#1

"dynCell(=false)
Imposed stress can be controlled using the packing stiffness or by applying the laws of dynamic (dynCell=true). Don’t forget to assign a mass to the cell." [1]

>>And why maxStrainrate takes the value of (10, 10, 10)?

Why not?

[1]https://yade-dem.org/doc/yade.wrapper.html#yade.wrapper.PeriTriaxController.dynCell

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