Finite elements for divdiv conforming symmetric tensors in three dimensions

L Chen, X Huang - Mathematics of Computation, 2022 - ams.org
Finite element spaces on a tetrahedron are constructed for $\operatorname
{div}\operatorname {div} $-conforming symmetric tensors in three dimensions. The key tools …

A finite element elasticity complex in three dimensions

L Chen, X Huang - Mathematics of Computation, 2022 - ams.org
A finite element elasticity complex on tetrahedral meshes and the corresponding
commutative diagram are devised. The $ H^ 1$ conforming finite element is the finite …

A family of mixed finite elements for the biharmonic equations on triangular and tetrahedral grids

J Hu, R Ma, M Zhang - Science China Mathematics, 2021 - Springer
This paper introduces a new family of mixed finite elements for solving a mixed formulation
of the biharmonic equations in two and three dimensions. The symmetric stress σ=−∇ 2 u is …

[PDF][PDF] A serendipity fully discrete div-div complex on polygonal meshes

M Botti, DA Di Pietro, M Salah - Comptes …, 2023 - comptes-rendus.academie-sciences …
In this work we address the reduction of face degrees of freedom (DOFs) for discrete
elasticity complexes. Specifically, using serendipity techniques, we develop a reduced …

A new div-div-conforming symmetric tensor finite element space with applications to the biharmonic equation

L Chen, X Huang - Mathematics of Computation, 2025 - ams.org
A new $ H (\operatorname {div}\operatorname {div}) $-conforming finite element is
presented, which avoids the need for supersmoothness by redistributing the degrees of …

Finite elements for divdiv-conforming symmetric tensors in three dimensions

L Chen, X Huang - arXiv preprint arXiv:2007.12399, 2020 - arxiv.org
Two types of finite element spaces on a tetrahedron are constructed for divdiv conforming
symmetric tensors in three dimensions. The key tools of the construction are the …

Finite element approximation of the Levi-Civita connection and its curvature in two dimensions

Y Berchenko-Kogan, ES Gawlik - Foundations of Computational …, 2024 - Springer
We construct finite element approximations of the Levi-Civita connection and its curvature on
triangulations of oriented two-dimensional manifolds. Our construction relies on the Regge …

Discrete elasticity exact sequences on Worsey–Farin splits

S Gong, J Gopalakrishnan, J Guzmán… - … and Numerical Analysis, 2023 - esaim-m2an.org
We construct conforming finite element elasticity complexes on Worsey–Farin splits in three
dimensions. Spaces for displacement, strain, stress, and the load are connected in the …

A discrete elasticity complex on three-dimensional Alfeld splits

SH Christiansen, J Gopalakrishnan, J Guzmán… - Numerische …, 2024 - Springer
We construct conforming finite element elasticity complexes on the Alfeld splits of tetrahedra.
The complex consists of vector fields and symmetric tensor fields, interlinked via the …

Finite element complexes in two dimensions

L Chen, X Huang - arXiv preprint arXiv:2206.00851, 2022 - arxiv.org
In this study, two-dimensional finite element complexes with various levels of smoothness,
including the de Rham complex, the curldiv complex, the elasticity complex, and the divdiv …