yade-dev team mailing list archive

[jean-françois jerier <jean-francois.jerier@xxxxxxxxxxxxxxx>]

Hi Chiara,

  If you need an incremental formulation for your contact law (to know if
there is load or unload), I advice you to look at the contact law
(NormalInelasticityLaw.cpp) written by Jerome Duriez.
More precisely this test:  if(un > currentContactPhysics->unMax) .....

The different data (as unMax) are saved into this file
(NormalInelasticityPhys).
I hope that I have helped you.

Regards
Jf


2010/4/7 chiara modenese <c.modenese@xxxxxxxxx>

> Hi all,
>
> I need the incremental formulation for the normal force in the contact law.
> Could you tell me how to do that? Should I simply used the normalVelocity
> component computed at contact as we do for the shear force? What about the
> sign convention? Should it remain the same, right?
>
> Thanks, Chiara
>
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