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Phantom-node method for shell models with arbitrary cracks
- Issue Date
- 2월-2012
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Keywords
- Phantom-node method; MITC3 shell element; Cracked shells; J-integral; Stress intensity factors
- Citation
- COMPUTERS & STRUCTURES, v.92-93, pp.242 - 256
- Indexed
- SCIE
SCOPUS
- Journal Title
- COMPUTERS & STRUCTURES
- Volume
- 92-93
- Start Page
- 242
- End Page
- 256
- ISSN
- 0045-7949
- Abstract
- A phantom-node method is developed for three-node shell elements to describe cracks. This method can treat arbitrary cracks independently of the mesh. The crack may cut elements completely or partially. Elements are overlapped on the position of the crack, and they are partially integrated to implement the discontinuous displacement across the crack. To consider the element containing a crack tip, a new kinematical relation between the overlapped elements is developed. There is no enrichment function for the discontinuous displacement field. Several numerical examples are presented to illustrate the proposed method. (C) 2011 Elsevier Ltd. All rights reserved.
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