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Error estimates for finite element approximations of effective elastic properties of periodic structures / Feluppskattningar för finita element-approximationer av effektiva elastiska egenskaper hos periodiska strukturer

Techniques for a posteriori error estimation for finite element approximations of an elliptic partial differential equation are studied.This extends previous work on localized error control in finite element methods for linear elasticity.The methods are then applied to the problem of homogenization of periodic structures. In particular, error estimates for the effective elastic properties are obtained. The usefulness of these estimates is twofold.First, adaptive methods using mesh refinements based on the estimates can be constructed.Secondly, one of the estimates can give reasonable measure of the magnitude ofthe error. Numerical examples of this are given.

Identiferoai:union.ndltd.org:UPSALLA1/oai:DiVA.org:uu-125632
Date January 2010
CreatorsPettersson, Klas
PublisherUppsala universitet, Avdelningen för teknisk databehandling
Source SetsDiVA Archive at Upsalla University
LanguageEnglish
Detected LanguageEnglish
TypeStudent thesis, info:eu-repo/semantics/bachelorThesis, text
Formatapplication/pdf
Rightsinfo:eu-repo/semantics/openAccess
RelationUPTEC F, 1401-5757 ; 10 034

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