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Proceedings Paper

Two-scale extended finite element method for studying crack propagation of porous bioceramic
Author(s): Jinlong Chen; Mingguo Wang; Nan Zhan; Xinhua Ji
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Paper Abstract

Extended finite element method (X-FEM) is a new method to solve the discontinuous problems, the basic theory of XFEM is presented in this paper, then the X-FEM is used to simulate the crack growth process of the hydroxyapatite material by three points bending test, and its deformation and stress field distribution is analyzed. The numerical results show the effectiveness of the method, the mesh in extended finite element method is independent of the internal geometry and physical interfaces, such that the trouble of high density meshing and re-meshing in the discontinuous field can be avoided. This greatly simplifies the analysis of the crack propagation process, showing the unique advantages of the extended finite element method in fracture expansion analysis of bioceramic. We also propose a two-scale strategy for crack propagation which enables one to use a refined mesh only in the crack's vicinity where it is required.

Paper Details

Date Published: 25 August 2009
PDF: 7 pages
Proc. SPIE 7375, ICEM 2008: International Conference on Experimental Mechanics 2008, 737503 (25 August 2009); doi: 10.1117/12.838971
Show Author Affiliations
Jinlong Chen, Tianjin Univ. (China)
Mingguo Wang, Tianjin Univ. (China)
Nan Zhan, Tianjin Univ. (China)
Xinhua Ji, Tianjin Univ. (China)

Published in SPIE Proceedings Vol. 7375:
ICEM 2008: International Conference on Experimental Mechanics 2008
Xiaoyuan He; Huimin Xie; YiLan Kang, Editor(s)

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