Hi Jérôme, The sign convention for fCap is weird, indeed. It would be good to revert it. Bruno
On 27/10/14 20:37, Jerome Duriez wrote: > Hi, > > The sign convention in Yade being (yet, maybe) not so firmly > established, again a question / remark in this field. > It seems to me that getStress() and getCapillaryStress() obey to two > different sign conventions. Because both consider the branch vector, > as from 2 to 1. > And, for the force vector, getStress considers "i.phys.force" which is > generally (always ?) the force sustained by 2 (because of 1) > While, getCapillaryStress() consideres i.phys.fCap, which is the force > sustained by 1 (*) > > Do you agree this needs to be corrected ? If yes, what do you vote for > ? Adding a minus sign in getCapillaryStress(), or change directly the > convention for fCap, so that it is (hopefully) consistent with "global > yade framework" ? > > Jerome > > > (*) : > https://github.com/yade/trunk/blob/master/pkg/dem/Law2_ScGeom_CapillaryPhys_Capillarity.cpp#L204 > > > _______________________________________________ > Mailing list: https://launchpad.net/~yade-dev > Post to : [email protected] > Unsubscribe : https://launchpad.net/~yade-dev > More help : https://help.launchpad.net/ListHelp -- _______________ Bruno Chareyre Associate Professor ENSE³ - Grenoble INP Lab. 3SR BP 53 38041 Grenoble cedex 9 Tél : +33 4 56 52 86 21 Fax : +33 4 76 82 70 43 ________________
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