A Three-Dimensional Numerical Investigation of Dynamic Fracture Characteristics of Rock Specimens with Preexisting Surface Flaws

Figure 14

The crack propagation on the surface of and inside the specimen with flaw depth b = 20 mm at select time. The first row (a–d) is for the crack propagation on the surface of the specimen, and the second row (a′–d′) is for crack propagation inside the specimen (plan section B-B′ in Figure 3(a)).