A family of symmetric mixed finite elements for linear elasticity on tetrahedral grids

Abstract

A family of stable mixed finite elements for the linear elasticity on tetrahedral grids are constructed, where the stress is approximated by symmetric $H(\d)$-$P_k$ polynomial tensors and the displacement is approximated by $C^{-1}$-$P_{k-1}$ polynomial vectors, for all $k\ge 4$. Numerical tests are provided.

11. arXiv admin note: substantial text overlap with arXiv:1406.7457

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