For gradient systems depending on a microstructure, it is desirable to derive a macroscopic
gradient structure describing the effective behavior of the microscopic scale on the …

A nonlinear boundary value problem arising from continuum mechanics is considered. The
nonlinearity of the model arises from the constitutive law which is described by means of the …

In the present work, we address a nonlinear boundary value problem that models frictional
contact with prescribed normal stress between a deformable body and a foundation. The …

This is a survey of recent results about bipotentials representing multivalued operators. The
notion of bipotential is based on an extension of Fenchel's inequality, with several …

We study a bilateral contact model with power-law friction and a regularized version of it as
well, a regularization of the friction law being considered. The behavior of the material is …

We study a class of frictional contact problems with prescribed normal stress, for nonlinearly
elastic materials. Using a bipotential which depends on the constitutive map and its Fenchel …

We consider a unilateral contact model for nonlinearly elastic materials, under the small
deformation hypothesis, for static processes. The contact is modeled with Signorini's …

A contact model with Tresca's friction law is considered, the behavior of the material being
modeled by the subdifferential of a convex constitutive map. Using a separable bipotential …

In Gurson's footsteps, different authors have proposed macroscopic plastic models for
porous solid with pressure-sensitive dilatant matrix obeying the normality law (associated …

We consider a displacement-traction boundary values problem for elastic materials, under
the small deformations hypothesis, for static processes. The behavior of the material is …