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Re: [Question #175211]: simple shear test with PBCs

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From: Chareyre <question175211@xxxxxxxxxxxxxxxxxxxxx>
Date: Wed, 19 Oct 2011 15:41:10 -0000
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Question #175211 on Yade changed:
https://answers.launchpad.net/yade/+question/175211

Chareyre posted a new comment:
Jan, it will not work. In simple shear, there is a continuous rotation
of principal axis during the loading. You can't do that by simply
rotating the initial problem.

Chiara, no, imposing shear stress is not possible, shear stress will be a result. It would not be a good type of control anyway. We don't impose stress but strain rate in axial compression, for the same reason (post-peak behaviour). 
I guess you get it already, but if you want oedometer-type conditions, then you have to change a little the boundary conditions of the script. For now all three sigma_kk are imposed.

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