A Study on the Influence of the Conglomerate Mesostructure on Fracture Failure Behavior Based on Discrete Element Method

Figure 10

Simulation models for fracture toughness tests. The selected three sets of test pieces are all semicircular with a diameter of 0.10 m. Their mesoscopic structure is representative. There is a critical gravel above the prefabricated crack of specimen A. The rock matrix mainly exists above the prefabricated cracks of specimen B. The tip of the prefabricated crack in specimen C is inside the gravel, and there are matrix and multiple gravels above it.

(a) CT image of Group A. Simulation models of Group A

(b) CT image of Group B. Simulation models of Group B

(c) CT image of Group C. Simulation models of Group C