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[Bruno Chareyre <question249377@xxxxxxxxxxxxxxxxxxxxx>]

Question #249377 on Yade changed:
https://answers.launchpad.net/yade/+question/249377

Bruno Chareyre posted a new comment:
Controlling shear stress without periodicity is awkard. Even in
experiments they have extreme difficulties to maintain a homogeneous
state of strain/stress. Some corners (the closing ones) have almost null
stress while others have high stress concentration.

Another note, since every matrix of the type:
[Sxx Sxy 0
 Sxy Syy 0
 0 0 0]
becomes this in a certain frame of reference:
[S1 0 0
 0 S2 0
 0 0 0]
TriaxialStressController() may actually be able to do what you want... It depends on what you really need.

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