yade-dev team mailing list archive

[Bruno Chareyre <bruno.chareyre@xxxxxxxxxxxxxxx>]

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
>
>
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