In this chapter, we perform a posteriori error analysis for the adaptive finite element solution of several variational inequalities, including elliptic variational inequalities of the second kind and corresponding quasistatic ...

In this paper, we derive and analyze a residual type a posteriori error estimator for finite element approximations of a frictional contact problem for linearized elastic materials. The reliability of the estimator is ...

In this paper, we present and analyze gradient recovery type a posteriori error estimates for the finite element approximation of elliptic variational inequalities of the second kind. Both reliability and efficiency of the ...