Simulation of Quasi-Static Crack Propagation by Adaptive Finite Element Method

The finite element method (FEM) is a widely used technique in research, including but not restricted to the growth of cracks engineering applications. However, failure use fine meshes poses problems modeling singular stress field around crack tip region. This work aims at using original source code program by Visual FORTRAN language predict propagation and fatigue lifetime adaptive dens mesh method. developed involves generator according advancing front as well both pre-processing post-processing for simulation under linear elastic fracture mechanics theory. state characterized intensity factor associated with rate growth. quarter-point elements are constructed accurately represent singularity this Under (LEFM) an assumption various configurations, Paris law model was employed evaluate mixed-mode life two specimens constant amplitude loading. framework includes progressive analysis factors (SIFs), direction growth, estimation life. results consistent other experimental numerical studies literature prediction trajectories calculation factors.