期刊
ENGINEERING FRACTURE MECHANICS
卷 72, 期 5, 页码 773-789出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.engfracmech.2004.05.003
关键词
finite element method; s-FEM; linear fracture mechanics; stress intensity factor
类别
In this paper, an element overlay technique (s-FEM [Comput. Struct. 43 (1992) 539]) is applied to various two dimensional linear fracture problems. When s-FEM is adopted, local finite element model concerning cracks can be built independently from the global finite element mesh for modeling overall structure. The local model is superposed on the global one. Therefore, it is tractable to introduce cracks in an existing finite element model. The accuracy of s-FEM is critically examined and it is found that the size of local mesh region needs to be larger than or roughly equal to that of an element in the global mesh. (C) 2004 Elsevier Ltd. All rights reserved.
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