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On symmetric pyramidal finite elements. (English) Zbl 1041.65098

Summary: We introduce two kinds of mortar pyramidal finite elements that have several symmetries and do not produce an artificial anisotropy. They are designed to generate continuous piecewise polynomial functions over face-to-face meshes, which contain tetrahedral and block elements.

MSC:

65N50 Mesh generation, refinement, and adaptive methods for boundary value problems involving PDEs
65N30 Finite element, Rayleigh-Ritz and Galerkin methods for boundary value problems involving PDEs
74S05 Finite element methods applied to problems in solid mechanics