Comment 4 for bug 493102
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| Bruno Chareyre (bruno-chareyre) wrote Re: [Yade-dev] [Bug 493102] Re: NormalShearInteraction::{normalForce, shearForce} has undefined orientation | #4 |
You are right on the "geotechnical" sign convention. But don't worry, it
is consistent with elasticity (you just replace outward normals by
inward normals everywhere in the theory). I prefer to keep the most
common convention though, with positive tensile stress/strain. I just
didn't realize this sign convention could be applied to forces.
It is still really non-intuitive for me, but I'm just one.
At least Janek or Olivier got the same intuition than me apparently...