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Using of XFEM With Meshing Type-T3 for Orthotropic FGM Plate With A Center Crack Parallel to the Material Gradation Under Fixed Grip Loading | ||
| Al-Qadisiyah Journal for Engineering Sciences | ||
| Article 1, Volume 8, Issue 3, 2015, Pages 335-354 PDF (0 K) | ||
| Authors | ||
| Hassanein Ibraheem Khalaf; Ameen Ahmed Nassar | ||
| Abstract | ||
| An improved approach for modeling discrete cracks in two-dimensional anisotropic functional graded materials FGMs by XFEM is described. A general node meshing type-T3 with sub-triangle technique for enhancing the Gauss quadrature accuracy near the crack is applied to increase the accuracy of numerical results. Also, the useful incompatible interaction integral method (M-integral method) is used to calculate the stress intensity factors. Numerical simulations have proved that provides accurate results by less number of nodes (DOFs) in comparison with reference. The results of LEFM (liner elastic fracture mechanics) have been compared with the reference results, showing the reliability, stability, and the efficiency of present meshing of XFEM. Matlab program (M-file) is used to solve the aim of this paper. | ||
| Keywords | ||
| XFEM; Anisotropic Functional Graded Materials; Interaction Integral; stress intensity factors | ||
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