25 August 2009 Two-scale extended finite element method for studying crack propagation of porous bioceramic
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Proceedings Volume 7375, ICEM 2008: International Conference on Experimental Mechanics 2008; 737503 (2009) https://doi.org/10.1117/12.838971
Event: International Conference on Experimental Mechanics 2008 and Seventh Asian Conference on Experimental Mechanics, 2008, Nanjing, China
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.
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Jinlong Chen, Mingguo Wang, Nan Zhan, Xinhua Ji, "Two-scale extended finite element method for studying crack propagation of porous bioceramic", Proc. SPIE 7375, ICEM 2008: International Conference on Experimental Mechanics 2008, 737503 (25 August 2009); doi: 10.1117/12.838971; https://doi.org/10.1117/12.838971
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