Question #672563 on Yade changed: https://answers.launchpad.net/yade/+question/672563
Bruno Chareyre proposed the following answer: >the biperiodic configuration where the sample is sandwiched in between 2 moving plates corresponds to a direct shear test... Direct shear refers to the (inhomogeneous) shear box for soils, or a sheared rock joint. The yade's preprocessor "SimpleShear" is badly named, btw, since it simulates a direct shear. Rotational shear is not homogeneous, although it does not impose the position of the shear band as firmly as direct shear. Conversely, the periodic BCs define simple shear (homogeneous). Only very specific devices (e.g. 1γ2ε in Grenoble) can do such thing in practice. > you could try to apply a rotation to the top plate with the centre of rotation located either the centre of the sample or offset from it so as to mimic your experiment... Nope. Such a rotational field is not periodic, the simulation would just go weird. It is not possible to use periodic BCs for rotational shear (unless someone implements periodicity for annular geometries, which is not straightforward). Bruno -- You received this question notification because your team yade-users is an answer contact for Yade. _______________________________________________ Mailing list: https://launchpad.net/~yade-users Post to : yade-users@lists.launchpad.net Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp