New question #679193 on Yade:
https://answers.launchpad.net/yade/+question/679193

Dear all,
When I want to use triaxialstresscontroller to implement a triaxial test with 
wall boundaries, I cannot find some controll parameters like relStressTol or 
absStressTol for periStressController engine to controll the servo process to 
keep a constant confining pressure during shearing. And indeed I find some 
relatively large fluctuation of the confining pressure when the axial strain is 
more than 20% or 30%(the confining pressure fluctuates between 100kPa and 
110kPa when I set the confining pressure to 100kPa). I wonder if there is some 
way to control the confining pressure to a smaller range during a triaxial test 
for this engine.
Thanks.
Zhijie

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