It was claimed that the reason ScGeom can't use applyForceAtContact is that the
position is not wrapped. But the position attribute can be assessed from the
"state" pointer:
applyForceAtContactPoint(-currentContactPhysics->normalForce-shearForce,
currentContactGeometry->contactPoint, id1, de1->se3.position, id2,
de2->se3.position, ncb);
Another relevant question is, since the position can be obtained from the state
pointer, why is it wrapped in Dem3DofGeom?
Related to HomotheticResize. May I know the difference between velocity and
displacement update for HomotheticResize? Cundall and Thornton use
displacement update.
Boon
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