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[Bruno Chareyre <bruno.chareyre@xxxxxxxxxxx>]

> - Alphas&Co are not really physical parameters;

Why not?
Do you include alpha=Ks/Kn in Alphas&Co?
If so, why?
If not, why would alpha be an acceptable constitutive parameter, but not alpha_rolling?


I would define rolling strength a bit differently, consistently with previous discussion
on using min strength :

Now :
		Real EtaRoll = 2.0*sdec1->etaRoll*sdec2->etaRoll/(sdec1->etaRoll+sdec2->etaRoll);
		contactPhysics->maxRollPl = EtaRoll*min(Da,Db);

Suggestion :
		contactPhysics->maxRollPl = min(sdec1->etaRoll*Da,sdec2->etaRoll*Db);

Cheers.

B.