CONFLUENTES MATHEMATICI

A priori and a posteriori error analysis for a hybrid formulation of a prestressed shell model
Confluentes Mathematici, Volume 14 (2022) no. 2, pp. 53-86.

This work deals with the finite element approximation of a prestressed shell model in the case of isometrically deformed shell. Using a new formulation where the unknowns (the displacement and the rotation of fibers normal to the midsurface) are described in Cartesian and local covariant basis respectively. Due to the constraint involved in the definition of the functional space, a penalized version is then considered. We obtain a non robust a priori error estimate of this penalized formulation, but a robust one is obtained for its mixed formulation. Moreover, we present a reliable and efficient a posteriori error estimator of the penalized formulation. Numerical tests are included that confirm the efficiency of our residual a posteriori estimator.

Accepted:
Revised after acceptance:
Published online:
DOI: 10.5802/cml.87
Classification: 74S05, 65N50
Keywords: finite element, adaptive methods, penalty method, hybrid formulation
Serge Nicaise 1; Ismael Merabet 2; Rihana Rezzag Bara 2

1 Université polytechnique Hauts-de-France, LAMAV, FR CNRS 2037, F-59313 - Valenciennes Cedex 9 France
2 Laboratoire de Mathématiques Appliquées, Université Kasdi Merbah, BP 511, Ouargla 30000, Algeria
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Serge Nicaise; Ismael Merabet; Rihana Rezzag Bara. A priori and a posteriori error analysis for a hybrid formulation of a prestressed shell model. Confluentes Mathematici, Volume 14 (2022) no. 2, pp. 53-86. doi : 10.5802/cml.87. https://cml.centre-mersenne.org/articles/10.5802/cml.87/

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