yade-users team mailing list archive

[Václav Šmilauer <eudoxos@xxxxxxxx>]

> Hi,
> 
> I add a question regarding the computation of the shear force as done
> in ScGeom. I remember that Bruno said that this procedure follows
> somehow what is explained in pfc manual. I checked that formulation
> and I do not understand why do we need to "update" (basically rotate)
> the shear force at the current value before adding the new increment.
> The force is expressed in the global system, so which is the reason
> for that?
Because the interaction might rotate in space as well, and shear force
should be kept constant relative to the interaction. Did I answer your
question?

PS. You might write a sentence about this in the docs of ScGeom itself,
since your questions are very good :-)