yade-users team mailing list archive

["Sergei D." <dorofeenko@xxxxxxxxx>]

25.03.2010 17:28, chiara modenese:
> BTW, could not we change terminology once we define, for instance, the
> relative velocity?
> I would say deltaRelVelocity, instead of relativeVelocity, and
> deltaShearDisplacement and do on if we use the incremental
> formulation. It is less confusing (it might be better also for new users).
>
>

But now we have exactly the instant relative velocity:

const Vector3r relativeVelocity = (de1.vel+de1.angVel.Cross(c1x)) -
(de2.vel+de2.angVel.Cross(c2x)) ;
const Real normalVelocity    = geom.normal.Dot(relativeVelocity);
const Vector3r shearVelocity    =
relativeVelocity-normalVelocity*geom.normal;

No? What is "delta"?

S.