A mathematical model of Koiter's type for a nonlinearly elastic “almost spherical” shell

Ciarlet, Philippe G.; Mardare, Cristinel

doi:10.1016/j.crma.2016.10.011

Mathematical problems in mechanics

A mathematical model of Koiter's type for a nonlinearly elastic “almost spherical” shell
[Un modèle mathématique du type de Koiter pour une coque non linéairement élastique « presque sphérique »]

Présenté par : Philippe G. Ciarlet

Ciarlet, Philippe G.¹ ; Mardare, Cristinel ²

¹ Department of Mathematics, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong
² Sorbonne Universités, Université Pierre-et-Marie-Curie, Laboratoire Jacques-Louis-Lions, 4, place Jussieu, 75005 Paris, France

Comptes Rendus. Mathématique, Tome 354 (2016) no. 12, pp. 1241-1247.

Résumé
Abstract

Nous proposons un nouveau modèle non linéaire de coques du type de Koiter, c'est-à-dire combinant les déformations membranaires et en flexion, qui peut être utilisé lorsque la surface moyenne de la coque non déformée est « presque sphérique », au sens que sa courbure gaussiene $K_{ε}$ et sa courbure moyenne $H_{ε}$ satisfont $K_{ε} = H_{ε}^{2} + O (ε^{2})$ , où 2ε désigne l'épaisseur de la coque.

We propose a new nonlinear shell model of Koiter's type, i.e. one that combines membrane and flexural strains, which can be used in the case where the middle surface of the undeformed shell is “almost spherical”, in the sense that its Gaussian curvature $K_{ε}$ and mean curvature $H_{ε}$ satisfy $K_{ε} = H_{ε}^{2} + O (ε^{2})$ , where 2ε denotes the thickness of the shell.

Reçu le : 2016-10-14
Accepté le : 2016-10-14
Publié le : 2016-10-31

DOI : 10.1016/j.crma.2016.10.011

Affiliations des auteurs :

Ciarlet, Philippe G. ¹ ; Mardare, Cristinel ²

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     title = {A mathematical model of {Koiter's} type for a nonlinearly elastic {\textquotedblleft}almost spherical{\textquotedblright} shell},
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Ciarlet, Philippe G.; Mardare, Cristinel. A mathematical model of Koiter's type for a nonlinearly elastic “almost spherical” shell. Comptes Rendus. Mathématique, Tome 354 (2016) no. 12, pp. 1241-1247. doi : 10.1016/j.crma.2016.10.011. http://www.numdam.org/articles/10.1016/j.crma.2016.10.011/

Bibliographie
Cité par

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[2] Ciarlet, P.G. Mathematical Elasticity, Volume III: Theory of Shells, North-Holland, Amsterdam, 2000

[3] Ciarlet, P.G. An Introduction to Differential Geometry with Applications to Elasticity, Springer, Dordrecht, The Netherlands, 2005

[4] P.G. Ciarlet, C. Mardare, A well-posed nonlinear model of Koiter's type for elliptic shells, in preparation.

[5] Ciarlet, P.G.; Miara, B. Justification of the two-dimensional equations of a linearly elastic shallow shell, Commun. Pure Appl. Math., Volume 45 (1992), pp. 327-360

[6] Klingenberg, W. A Course in Differential Geometry, Springer, Berlin, 1978

[7] Koiter, W.T. On the nonlinear theory of thin elastic shells, Proc. K. Ned. Akad. Wet. B, Volume 69 (1966), pp. 1-54

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