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Phantom-node method for shell models with arbitrary cracks

Authors
Chau-Dinh, ThanhZi, GoangseupLee, Phill-SeungRabczuk, TimonSong, Jeong-Hoon
Issue Date
Feb-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
Pages
15
Indexed
SCI
SCIE
SCOPUS
Journal Title
COMPUTERS & STRUCTURES
Volume
92-93
Start Page
242
End Page
256
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/106120
DOI
10.1016/j.compstruc.2011.10.021
ISSN
0045-7949
1879-2243
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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College of Engineering > School of Civil, Environmental and Architectural Engineering > 1. Journal Articles
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