ZHOU Shang-zhi, DANG Fa-ning, CHEN Hou-qun, et al. Numerical method for crack extension analysis based on fatigue fracture process of rock materials[J]. 2008, 29(3).
ZHOU Shang-zhi, DANG Fa-ning, CHEN Hou-qun, et al. Numerical method for crack extension analysis based on fatigue fracture process of rock materials[J]. 2008, 29(3).DOI:
Numerical analysis of fatigue fracture process of rock materials
two phases
fatigue crack initiation and extension
are rightly associated by damage mechanics method. Based on fatigue curve in the crack initiation process
a numerical method to compute the fatigue crack extension
is proposed. The relation between crack length and fatigue life in the crack extension can be obtained by the damage mechanics-finite element method. The above two phases being separately dealt in existing researches are brought into a unified theoretical frame. This method is used to analyze rock-concrete materials
the fatigue lives calculated agree well with the experimental ones.