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| HAL : hal-00614657, version 2 |
| arXiv : 1108.3167 |
| DOI : 10.1002/nme.3234 |
| Fiche détaillée |  Récupérer au format |
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| International Journal for Numerical Methods in Engineering 89, 2 (2011) 154-179 |
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| Versions disponibles : | v1 (16-08-2011) | v2 (26-09-2011) |
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| Local/global model order reduction strategy for the simulation of quasi-brittle fracture |
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Pierre Kerfriden 1Jean-Charles Passieux 2 |
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| (15/07/2011) |
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| This paper proposes a novel technique to reduce the computational burden associated with the simulation of localised failure. The proposed methodology affords the simulation of damage initiation and propagation whilst concentrating the computational effort where it is most needed, i.e. in the localisation zones. To do so, a local/global technique is devised where the global (slave) problem (far from the zones undergoing severe damage and cracking) is solved for in a reduced space computed by the classical Proper Orthogonal Decomposition, while the local (master) degrees of freedom (associated with the part of the structure where most of the damage is taking place) are fully resolved. Both domains are coupled through a local/global technique. This method circumvents the difficulties associated with model order reduction for the simulation of highly non-linear mechanical failure and offers an alternative or complementary approach to the development of multiscale fracture simulators. |
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| 1 : | Cardiff University School of Engineering |
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Cardiff University |
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| 2 : | Institut Clément Ader (ICA) |
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INSA - Institut National des Sciences Appliquées – Université de Toulouse Paul Sabatier – Ecole des Mines d'Albi-Carmaux – Instut Supérieur de l'Aéronautique et de l'Espace |
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| Domaine | : | Mathématiques/Analyse numérique Sciences de l'ingénieur/Mécanique/Mécanique des structures Physique/Mécanique/Mécanique des structures |
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| Adaptive Model Order Reduction (MOR) – Local/global Approach – Nonlinear Fracture Mechanics – Proper Orthogonal Decomposition (POD) – Newton/Krylov Solver |
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| Liste des fichiers attachés à ce document : | |||||
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| hal-00614657, version 2 | |
| http://hal.archives-ouvertes.fr/hal-00614657 | |
| oai:hal.archives-ouvertes.fr:hal-00614657 | |
| Contributeur : Pierre Kerfriden | |
| Soumis le : Jeudi 22 Septembre 2011, 15:17:34 | |
| Dernière modification le : Lundi 12 Mars 2012, 19:42:38 | |
