%0 Journal Article %T Level set X-FEM non matching meshes: application to dynamic crack propagation in elastic-plastic media %+ Laboratoire de Mécanique des Contacts et des Structures [Villeurbanne] (LaMCoS) %+ Laboratoire d'études de DYNamique (DYN) %+ Mécanique Multiéchelle pour les solides (MIMESIS) %+ Laboratoire d'Intégrité des Structures et de Normalisation (LISN) %+ Département de Modélisation des Systèmes et Structures (DM2S) %A Prabel, Benoit %A Combescure, Alain %A Gravouil, Anthony %A Marie, Stéphane %< avec comité de lecture %@ 0029-5981 %J International Journal for Numerical Methods in Engineering %I Wiley %V 69 %N 8 %P 1553-1569 %8 2006-07 %D 2006 %R 10.1002/nme.1819 %K extended finite element method %K xfem %K plasticity %K level set %K dynamic crack propagation %K experiments %K fracture mechanics %Z Engineering Sciences [physics]/Mechanics [physics.med-ph] %Z Physics [physics]/Mechanics [physics]/Solid mechanics [physics.class-ph]Journal articles %X This paper develops two aspects improving crack propagation modeling with the X-FEM method. On the one hand, it explains how one can use at the same time a regular structured mesh for a precise and efficient level set update and an unstructured irregular one for the mechanical model. On the other hand, a new numerical scheme based on the X-FEM method is proposed for dynamic elastic-plastic situations. The simulation results are compared with two experiments on PMMA for which crack speed and crack path are provided. %G English %2 https://cea.hal.science/cea-00475611/document %2 https://cea.hal.science/cea-00475611/file/IJNME2007_publicea.pdf %L cea-00475611 %U https://cea.hal.science/cea-00475611 %~ CEA %~ CNRS %~ INSA-LYON %~ LAMCOS %~ DEN %~ DEN-SACLAY %~ INSA-GROUPE %~ UDL