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A posteriori error estimation for extended finite elements by an extended global recovery

✍ Scribed by Marc Duflot; Stéphane Bordas

Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
358 KB
Volume
76
Category
Article
ISSN
0029-5981

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In part I of this investigation, we proved that the standard a posteriori estimates, based only on local computations, may severely underestimate the exact error for the classes of wave-numbers and the types of meshes employed in engineering analyses. We showed that this is due to the fact that the