Abstract
This work presents new stabilised finite element methods for a bending moments formulation of the Reissner-Mindlin plate model. The introduction of the bending moment as an extra unknown leads to a new weak formulation, where the symmetry of this variable is imposed strongly in the space. This weak problem is proved to be well-posed, and stabilised Galerkin schemes for its discretisation are presented and analysed. The finite element methods are such that the bending moment tensor is sought in a finite element space constituted of piecewise linear continuos and symmetric tensors. Optimal error estimates are proved, and these findings are illustrated by representative numerical experiments.
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This research was partially supported by the Leverhulme Trust through the Research Grant Project No. RPG-2012-483. The work of TB was also partially funded by Dirección de Investigación de Universidad Católica de la Santísima Concepción, Chile.
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Barrenechea, G.R., Barrios, T.P. & Wachtel, A. Stabilised finite element methods for a bending moment formulation of the Reissner-Mindlin plate model. Calcolo 52, 343–369 (2015). https://doi.org/10.1007/s10092-014-0120-1
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DOI: https://doi.org/10.1007/s10092-014-0120-1