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[Question #291177]: triaxial test: particles' Young modulus and overlaps

To: yade-users@xxxxxxxxxxxxxxxxxxx
From: hjz <question291177@xxxxxxxxxxxxxxxxxxxxx>
Date: Sat, 16 Apr 2016 14:07:50 -0000
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New question #291177 on Yade:
https://answers.launchpad.net/yade/+question/291177

 Dear all,
        I'm trying a triaxial test with script-session 1.py. I have some problem with it.

        1)Why does increasing the particles' Young modulus cause the running over of particles when I  have applied confining pressure? The particles is decreased obviously.
        2)When the young modulus of walls is equal to the particles', the walls have a deformation as the compression of the packing. Does the young modulus of the walls need to be bigger than the particles'? 
        3)With the DEM, we need to control the particles' overlap when we compress the packing. How can we control it in yade? Can we obtain it with any function in yade?

        Thanks to all of you.

Sincerely hjz

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