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A note on convergence of low energy critical points of nonlinear elasticity functionals, for thin shells of arbitrary geometry

Published online by Cambridge University Press:  24 March 2010

Marta Lewicka*
Affiliation:
Marta Lewicka, University of Minnesota, Department of Mathematics, 206 Church St. S.E., Minneapolis, MN 55455, USA. lewicka@math.umn.edu
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Abstract

We prove that the critical points of the 3d nonlinear elasticity functional on shells of small thickness h and around the mid-surface S of arbitrary geometry, converge as h → 0 to the critical points of the von Kármán functional on S, recently proposed in [Lewicka et al., Ann. Scuola Norm. Sup. Pisa Cl. Sci. (to appear)]. This result extends the statement in [Müller and Pakzad, Comm. Part. Differ. Equ.33 (2008) 1018–1032], derived for the case of plates when $S\subset\mathbb{R}^2$. The convergence holds provided the elastic energies of the 3d deformations scale like h4 and the external body forces scale like h3.

Type
Research Article
Copyright
© EDP Sciences, SMAI, 2010

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