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Thin elastic plates supported over small areas. I. Korn's inequalities and boundary layers

Authors :
Buttazzo, G.
Cardone, G.
Nazarov, S. A.
Source :
Journal of Convex Analysis 23 (1) (2016), 347-386
Publication Year :
2015

Abstract

A thin anisotropic elastic plate clamped along its lateral side and also supported at a small area $\theta_{h}$ of one base is considered; the diameter of $\theta_{h}$ is of the same order as the plate relative thickness $h\ll1$. In addition to the standard Kirchhoff model with the Sobolev point condition, a three-dimensional boundary layer is investigated in the vicinity of the support $\theta_{h}$, which with the help of the derived weighted inequality of Korn's type, will provide an error estimate with the bound $ch^{1/2}|\ln h|$. Ignoring this boundary layer effect reduces the precision order down to $|\ln h|^{-1/2}$.<br />Comment: 35 pages, 1 figure

Details

Database :
arXiv
Journal :
Journal of Convex Analysis 23 (1) (2016), 347-386
Publication Type :
Report
Accession number :
edsarx.1507.03903
Document Type :
Working Paper