A discrete elasticity complex on three-dimensional Alfeld splits

09/16/2020 ∙ by Snorre H. Christiansen, et al. ∙ 0

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 linearized deformation operator, the linearized curvature operator, and the divergence operator, respectively. The construction is based on an algebraic machinery that derives the elasticity complex from de Rham complexes, and smoother finite element differential forms.

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