Mixed and Stabilized Finite Element Methods for the Obstacle Problem

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Abstract

We discretize the Lagrange multiplier formulation of the obstacle problem by mixed and stabilized finite element methods. A priori and a posteriori error estimates are derived and numerically verified.


Original languageEnglish
Pages (from-to)2718-2744
JournalSIAM Journal on Numerical Analysis
Volume55
Issue number6
DOIs
Publication statusPublished - 2017
MoE publication typeA1 Journal article-refereed

Keywords

  • obstacle problem
  • mixed finite elements
  • stabilized finite elements

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