Guaranteed and Sharp a Posteriori Error Estimates in Isogeometric AnalysisReport as inadecuate



 Guaranteed and Sharp a Posteriori Error Estimates in Isogeometric Analysis


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We present functional-type a posteriori error estimates in isogeometric analysis (IGA). These estimates, derived on functional grounds, provide guaranteed and sharp upper bounds of the true error in the energy norm. By exploiting the properties of non-uniform rational B-splines (NURBS), we present efficient computation of these error estimates. The numerical realization and the quality of the computed error distribution are addressed. The potential and the limitations of the proposed approach are illustrated using several computational examples.



Author: Stefan K. Kleiss; Satyendra K. Tomar

Source: https://archive.org/







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