The CohesiveFrictional contact law is very general, it includes
normal, shear, bending, and torsion components (bending and torsion
are purely elastic for now, it is no big deal to add a threshold for
failure). You could start with this law and add missing features, or
perhaps derive a new law from this one if you need much more
sophistications.
I just looked at CohesiveFrictional law and frankly it looks horrible.
Janek sain 70% of that code was garbage and it is still sitting there.
If I were a newcomer (which Luc is not, of course) and someone would
show me this as constitutive law, I would run away from yade very fast...
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