The 2D-Signorini contact problem with Tresca and Coulomb friction is discussed in infinite-dimensional Hilbert spaces. First, the problem with given friction (Tresca friction) is considered. It leads to a constraint non-differentiable minimization problem. By means of the Fenchel duality theorem this problem can be transformed into a constrained minimization involving a smooth functional. A regularization technique for the dual problem motivated by augmented lagrangians allows to apply an infinite-dimensional...

The 2D-Signorini contact problem with Tresca and Coulomb friction
is discussed in infinite-dimensional Hilbert spaces. First, the
problem with given friction (Tresca friction) is considered. It
leads to a constraint non-differentiable minimization problem. By
means of the Fenchel duality theorem this problem can be transformed
into a constrained minimization involving a smooth functional. A
regularization technique for the dual problem motivated by augmented
Lagrangians allows to apply an...

The purpose of this paper is to derive and study a new asymptotic
model for the equilibrium state of a thin anisotropic
piezoelectric plate in frictional contact with a rigid obstacle.
In the asymptotic process, the thickness of the piezoelectric
plate is driven to zero and the convergence of the unknowns is
studied. This leads to two-dimensional Kirchhoff-Love plate
equations, in which mechanical displacement and electric potential
are partly decoupled. Based on this model numerical examples are
presented...

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