yade-users team mailing list archive

[Jerome Duriez <duriez@xxxxxxxxxxxxxxx>]

Hello,

I'm considering the code in py/_utils.cpp for the function 
forcesOnPlane, and i have few questions :

- I'm guessing that there is an hidden convention of sign below the 
orientation of the returned vector. Does this returned sum of forces 
correspond to forces acting from one side of the plane to the other (one 
"block" to the other) ?
If yes (as I assume it), from which block to which one ? (with respect 
to the normal defined in the call of the function ?)

- And, if still yes to the first question, I imagine that it depends on 
the convention assumed by the author of this code for 
NormShearPhys->normalForce and NormShearPhys->shearForce : are these 
vectors considered from body 1 to body 2 or the contrary ? I'm aware of 
https://bugs.launchpad.net/yade/+bug/493102, but I think that the guy 
who wrote this made a choice (Vaclav ?)

Thanks,

Jerome

--
Jérôme Duriez
ATER Polytech' Grenoble - Laboratoire 3S-R
04.56.52.86.49 (ne pas laisser de messages sur le répondeur)