A multi-grid sampling multi-scale method for crack initiation and propagation

In this study, a multi-grid sampling multi-scale (MGSMS) method is proposed by coupling with finite element (FEM), extended (XFEM) and molecular dynamics (MD) methods. Crack studied comprehensively from microscopic initiations to macroscopic propagation MGSMS method. order establish the relationship between model, FEM used transmit displacement boundary conditions atomic model XFEM feedback crack model. Moreover, an image recognition based extracting extract coordinate MD result files efficiently Latin hypercube reduce computational cost of MD. Numerical results show that can be calculate micro-crack it macro-crack The initiation simulation plate under mode I loading completed.