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[Question #235138]: how to define friction at the boundaries in triaxial test

To: yade-users@xxxxxxxxxxxxxxxxxxx
From: stephen <question235138@xxxxxxxxxxxxxxxxxxxxx>
Date: Wed, 04 Sep 2013 09:21:18 -0000
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New question #235138 on Yade:
https://answers.launchpad.net/yade/+question/235138

hi ,
please how can one define the  friction at the top and bottom of the specimen  in a Triaxial test simulation of a granular material.

the  center ,extension  and the wall mask of my model are as below.

O.bodies.append(utils.geom.facetBox((0.035,0.035,0.035),(0.035,0.035,0.035),wallMask=15,dynamic=1))
O.bodies.append(utils.geom.facetBox((0.035,0.035,0.035),(0.035,0.035,0.035),wallMask=16,dynamic=0))#bottom of the sample, which is not allowed to move. because of that dynamic=0 [O means "False"]

thanks  in advance.

best regards
stephen

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