Mechanical Properties and Failure Behavior of Composite Samples

Figure 2

Illustration of bond models in PFC and numerical sample. (a) and (b) are contact-bond model (CBM) and parallel-bond model (PBM), respectively (modified from Cho et al. [30]). (c) A typical numerical RCR sample in this study. (d) Components of the linear parallel-bond model (modified from Itasca [28])), where , , and represent normal stiffness, shear stiffness, and friction coefficient at a contact point, respectively.