21811 articles – 15606 Notices  [english version]
Fiche détaillée Articles dans des revues avec comité de lecture
International Journal of Numerical Methods in Engineering 86 (2011) 528-548
Optimal convergence analysis for the extended finite element method
Serge Nicaise1, Yves Renard2, 3, Elie Chahine4

We establish some optimal a priori error estimate on some variants of the eXtended Finite Element Method (Xfem), namely the Xfem with a cut-off function and the standard Xfem with a fixed enrichment area. The results are established for the Lame system (homogeneous isotropic elasticity) and the Laplace problem. The convergence of the numerical stress intensity factors is also investigated. We show some numerical experiments which corroborate the theoretical results.
1 :  LAMAV - Laboratoire de Mathématiques et leurs Applications de Valenciennes, EA 45
2 :  LaMCoS - Laboratoire de Mécanique des Contacts et des Structures
3 :  ICJ - Institut Camille Jordan
4 :  Laboratory for Nuclear Materials