yade-dev team mailing list archive

[Václav Šmilauer <eu@xxxxxxxx>]

> Goal stresses don't have to be changed, compressive stresses are always
> negative. The only thing that needs to be changed in scripts (still too
> much, I agree) is you need PeriTriaxController.revertSign=false with
> Dem3DofGeom laws, and PeriTriaxController.revertSign=true with ScGeom
> laws (L3 laws are like Dem3Dof?).
You either change sign of stress, or you change revertSign, the effect 
is the same. The convention does not depend on IGeom type 
(ScGeom/L3Geom/...), it depends on the contact law (although currently 
AFAIK there is 100% correlation with IGeom type), because it is where 
the force is set (though does not have to be set at all; that's the 3rd 
possibility).

Cheers, v.