Dans cette Note, nous proposons une méthode mixte pour résoudre les équations du modèle de Naghdi de coques linéairement élastiques. Les inconnues du problème sont le déplacement des points de la surface moyenne, le vecteur de rotation de la normale à la surface moyenne et un multiplicateur de Lagrange introduit pour forcer le caractère tangentiel de la rotation. Nous démontrons le caractère bien posé du problème continu et du problème discret.
In this Note, a mixed formulation is proposed to solve Naghdi's equations for a thin linearly elastic shell. The unknowns of the problem are the displacement of the points of the middle surface, the rotation field of the normal vector to the middle surface of the shell and a Lagrange multiplier that is introduced in order to enforce the tangency requirement on the rotation. We prove the well posedness of the continuous and the discrete problems.
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@article{CRMATH_2015__353_7_653_0, author = {Nicaise, Serge and Merabet, Ismail}, title = {A mixed {DG} method for folded {Naghdi's} shell in {Cartesian} coordinates}, journal = {Comptes Rendus. Math\'ematique}, pages = {653--658}, publisher = {Elsevier}, volume = {353}, number = {7}, year = {2015}, doi = {10.1016/j.crma.2015.04.016}, language = {en}, url = {http://archive.numdam.org/articles/10.1016/j.crma.2015.04.016/} }
TY - JOUR AU - Nicaise, Serge AU - Merabet, Ismail TI - A mixed DG method for folded Naghdi's shell in Cartesian coordinates JO - Comptes Rendus. Mathématique PY - 2015 SP - 653 EP - 658 VL - 353 IS - 7 PB - Elsevier UR - http://archive.numdam.org/articles/10.1016/j.crma.2015.04.016/ DO - 10.1016/j.crma.2015.04.016 LA - en ID - CRMATH_2015__353_7_653_0 ER -
%0 Journal Article %A Nicaise, Serge %A Merabet, Ismail %T A mixed DG method for folded Naghdi's shell in Cartesian coordinates %J Comptes Rendus. Mathématique %D 2015 %P 653-658 %V 353 %N 7 %I Elsevier %U http://archive.numdam.org/articles/10.1016/j.crma.2015.04.016/ %R 10.1016/j.crma.2015.04.016 %G en %F CRMATH_2015__353_7_653_0
Nicaise, Serge; Merabet, Ismail. A mixed DG method for folded Naghdi's shell in Cartesian coordinates. Comptes Rendus. Mathématique, Tome 353 (2015) no. 7, pp. 653-658. doi : 10.1016/j.crma.2015.04.016. http://archive.numdam.org/articles/10.1016/j.crma.2015.04.016/
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