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confinement condition

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asked Jan 7 by trucgiao91 (430 points)
Hi Vaclav,

Happy new year!!!

I would like to ask about the methods of confinement. I have concrete packing in cylindrical shape and I would like to block outer particles at outer layer not to move in x and y direction (meanwhile I applied the force on the top in z- direction). Would it be sufficient if I just block them as :

for s in outerLayer: s.blocked = 'xy'

or shall I introduce a frictionless cyclindrical wall with very high stiffness surrounding the specimen? I personally think the first approach is simpler,

Best,

Giao

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