A mesoscale numerical approach to predict damage behavior in concrete basing on phase field method

In this paper, we develop a numerical approach to simulate the 2D complex damage and fracture process of quasi-brittle concrete materials. Based on phase field theory for case elastic isotropic multicomponent materials generation based upon Monte Carlo’s simulation method, construct procedure solve thermodynamic problems. The diffusive variable obtained from calculation can be used represent crack nucleation propagation within mesostructure. Some factors that affect result (type density function type split decomposition strain energy) are accounted make predictions more accurate material. new examples provided show usefulness approach.