This contribution deals with a modelling of the tangential velocity slip problem in terms of variational inequalities. In particular, the critical shear stress criterion is considered. The theoretical conditions under which a unique solution exists are discussed and an algebraic description based upon a complementarity approach is presented, similar to the one adopted in . Finally, preliminary numerical results are presented and discussed.
A Complementarity Formulation of the Tangential Velocity Slip Problem in Lubricant Films / Strozzi, Antonio; Giacopini, Matteo; Bertocchi, Enrico; Daniele, Dini. - STAMPA. - 4:(2013), pp. 3503-3506. (Intervento presentato al convegno 5th World Tribology Congress, WTC 2013 tenutosi a Torino, Italy nel September 8 – 13).