Convergence of dual finite element approximations for unilateral boundary value problems. (English) Zbl 0462.65064


65N30 Finite element, Rayleigh-Ritz and Galerkin methods for boundary value problems involving PDEs
35J05 Laplace operator, Helmholtz equation (reduced wave equation), Poisson equation
74A55 Theories of friction (tribology)
74M15 Contact in solid mechanics
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