An extended finite element method for calculating stress intensity factors
Abstract：Based on the traditional finite element shape functions, Heaviside functions were introduced to simulate the discontinuity in the displacement field of a crack, and the near crack tip enrichment functions were constructed to represent the near tip asymptotic field, an interaction integral method was adopted to calculate the stress intensity factors. The results show that the extended finite element method has high precision in the analysis of fracture mechanics problems, and that the crack location was independent of the FEM mesh, which provides a simple and efficient treatment of cracks.
Keywords：fracture mechanicscrackextended finite elementstress intensity factor
Publication Date：2012-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 459-463 )