Application of the substructured finite element/extended finite element method (S-FE/XFE) to the analysis of cracks in aircraft thin walled structures
(2009) Engineering Fracture Mechanics — Vol. 76, n° 1, p. 44-58 (2009)
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- Abstract
- The substructured finite element/extended finite element (S-FE/XFE) approach is used to compute stress intensity factors in large aircraft thin walled structures containing cracks. The structure is decomposed into a 'safe' domain modeled with classical shell elements and a 'cracked' domain modeled using three-dimensional extended finite elements. Two applications are presented and discussed, supported by validation test cases. First a section of stiffened panel containing a through-thickness crack is investigated. Second. small surface cracks are simulated in the case of a generic 'pressure membrane' with realistic crack configurations. These two semi-industrial benchmarks demonstrate the accuracy, robustness and computational efficiency of the substructured finite element/extended finite element approach to address complex three-dimensional crack problems within thin walled structures. (c) 2008 Elsevier Ltd. All rights reserved.
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Citations
Wyart, E., Coulon, D., Pardoen, T., Remacle, J.-F., & Lani, F. (2009). Application of the substructured finite element/extended finite element method (S-FE/XFE) to the analysis of cracks in aircraft thin walled structures. Engineering Fracture Mechanics, 76(1), 44-58. https://doi.org/10.1016/j.engfracmech.2008.04.025 (Original work published 2009)