Numerical Study of Rock Fragmentation Process and Acoustic Emission by FDEM Based on Heterogeneous Model

Figure 1

Failure model of crack element in FDEM: (a) tensile crack model; (b) fracture process zone (FPZ) near the crack tip; (c) numerical implementation of the FPZ using triangular elastic elements and four-node crack elements to represent the bulk material and the fracture, respectively; (d) numerical representation of material with continuum triangular elements and embedded crack elements, respectively [3].

(a)

(b)

(c)

(d)