Volume 14, Issue 6
Error Analysis of an Immersed Finite Element Method for Euler-Bernoulli Beam Interface Problems

Min Lin, Tao Lin & Huili Zhang

Int. J. Numer. Anal. Mod., 14 (2017), pp. 822-841

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  • Abstract

This article presents an error analysis of a Hermite cubic immersed finite element (IFE) method for solving interface problems of the differential equation modeling a Euler-Bernoulli beam made up of multiple materials together with suitable jump conditions at material interfaces. The analysis consists of three essential groups. The first group is about IFE functions including bounds for the IFE shape functions and inverse inequalities. The second group is about error bounds for IFE interpolation derived with a multi-point Taylor expansion technique. The last group, and perhaps the most important group, is for proving the optimal convergence of the IFE solution generated by the usual Galerkin scheme based on the Hermite cubic IFE space considered in this article.

Published online: 2017-10