Comptes Rendus
no. 7
Analyse sur les espaces métriques
On the Geometric Rigidity interpolation estimate in thin bi-Lipschitz domains
Davit Harutyunyan1
1 Department of Mathematics, University of California Santa Barbara, USA
Comptes Rendus. Mathématique, Volume 358 (2020) no. 7, pp. 811-816.

This work is concerned with developing asymptotically sharp geometric rigidity estimates in thin domains. A thin domain Ω in space is roughly speaking a shell with non-constant thickness around a regular enough two dimensional compact surface. We prove a sharp geometric rigidity interpolation inequality that permits one to bound the Lp distance of the gradient of a u∈W1,p field from any constant proper rotation R, in terms of the average Lp distance (nonlinear strain) of the gradient from the rotation group, and the average Lp distance of the field itself from the set of rigid motions corresponding to the rotation R. The constants in the estimate are sharp in terms of the domain thickness scaling. If the domain mid-surface has a constant sign Gaussian curvature then the inequality reduces the problem of estimating the gradient ∇u in terms of the nonlinear strain ∫Ωdistp(∇u(x),SO(3))dx to the easier problem of estimating only the vector field u in terms of the nonlinear strain with no asymptotic loss in the constants. This being said, the new interpolation inequality reduces the problem of proving “any” geometric one well rigidity problem in thin domains to estimating the vector field itself instead of the gradient, thus reducing the complexity of the problem.

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Révisé le :
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DOI : 10.5802/crmath.87

Davit Harutyunyan 1

1 Department of Mathematics, University of California Santa Barbara, USA
Licence : CC-BY 4.0
Droits d'auteur : Les auteurs conservent leurs droits 
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     title = {On the {Geometric} {Rigidity} interpolation estimate in thin {bi-Lipschitz} domains},
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Davit Harutyunyan. On the Geometric Rigidity interpolation estimate in thin bi-Lipschitz domains. Comptes Rendus. Mathématique, Volume 358 (2020) no. 7, pp. 811-816. doi : 10.5802/crmath.87. https://comptes-rendus.academie-sciences.fr/mathematique/articles/10.5802/crmath.87/

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