Volume 3, Issue 2
On Higher Order Pyramidal Finite Elements

Liping Liu ,  Kevin B. Davies ,  Michal Křížek and Li Guan

10.4208/aamm.09-m0989

Adv. Appl. Math. Mech., 3 (2011), pp. 131-140.

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  • Abstract

In this paper we first prove a theorem on the nonexistence of pyramidal polynomial basis functions. Then we present a new symmetric composite pyramidal finite element which yields a better convergence than the nonsymmetric one. It has fourteen degrees of freedom and its basis functions are incomplete piecewise triquadratic polynomials. The space of ansatz functions contains all quadratic functions on each of four subtetrahedra that form a given pyramidal element.

  • History

Published online: 2011-03

  • AMS Subject Headings

65N30

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