Subdomain-based flux-free a posteriori error estimators
نویسندگان
چکیده
منابع مشابه
Subdomain - based flux - free a posteriori error estimators ⋆ Núria PARÉS , Pedro DÍEZ and Antonio HUERTA ∗
A new residual-type flux-free error estimator is presented. It computes upper and lower bounds of the error in energy norm with the ultimate goal of obtaining bounds for outputs of interest. The proposed approach precludes the main drawbacks of standard residual type estimators circumventing the need of flux-equilibration and resulting in a simple implementation that uses standard resources ava...
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This paper presents explicit equilibrated fluxes for the local pure-Neumann problems used by the a posteriori error estimator in Ainsworth and Oden [M. Ainsworth, J.T. Oden, A procedure for a posteriori error estimation for h–p finite element methods, Comput. Methods Appl. Mech. Engrg. 101 (1992) 73–96]. We modify the target function for minimization to obtain new equilibrated fluxes in a weigh...
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We discuss, in this paper, a flux-free method for the computation of strict upper bounds of the energy norm of the error in a Finite Element (FE) computation. The bounds are strict in the sense that they refer to the difference between the displacement computed on the FE mesh and the exact displacement, solution of the continuous equations, rather than to the difference between the displacement...
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ژورنال
عنوان ژورنال: Computer Methods in Applied Mechanics and Engineering
سال: 2006
ISSN: 0045-7825
DOI: 10.1016/j.cma.2004.06.047