WEAK SOLVABILITY FOR A CLASS OF CONTACT PROBLEMS

A unilateral frictionless contact model, under the small deformationshypothesis, for static processes is considered. We model the behaviorof the material by a constitutive law stated in a subdifferentialform. The contact is described with Signorini's condition. Our studyfocuses on the weak solvability of the model, based on a weak formulation with dual Lagrange multipliers