Al-Qadisiyah Journal for Engineering Sciences

Using of XFEM With Meshing Type-T3 for Orthotropic FGM Plate With A Center Crack Parallel to the Material Gradation Under Fixed Grip Loading

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
Al-Qadisiyah Journal for Engineering Sciences
Volume 8, Issue 3
Summer 2015
Pages 335-354

  • Receive Date 01 September 2015
  • Revise Date 20 September 2015
  • Accept Date 25 September 2015

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