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Computable error estimates for linearization and numerical solution of obstacle problems
Journal article   Open access   Peer reviewed

Computable error estimates for linearization and numerical solution of obstacle problems

Weimin Han
Journal of computational and applied mathematics, Vol.55(1), pp.69-79
1994
DOI: 10.1016/0377-0427(94)90185-6
url
https://doi.org/10.1016/0377-0427(94)90185-6View
Published (Version of record) Open Access

Abstract

We derive quantitative a posteriori estimates for the error caused by replacing an obstacle problem with a linear problem. The error bound depends on the solution of the linear problem, but is independent of the solution of the obstacle problem. We then give a discrete version of the a posteriori error estimates, which is used in solving a finite-element system of the obstacle problem. A detailed analysis for a one-dimensional example is given, showing the effectiveness of our error estimates.
A posteriori error estimates Dual variational principle Finite-element approximation Obstacle problem Linearization

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