Elastoplastic discrete bond cell model for rock-like material with irreversible sliding interfaces

An elastoplastic discrete bond cell model with irreversible sliding interfaces is proposed for rock-like material. It represents the rock-like material with an assembly of linear elastic discrete bond cells. Irreversible sliding interfaces are inserted between the bond cells, which are governed by a simple friction law. Using this method, the complex elastoplastic behaviours of rock-like materials can be well simulated without using the phenomenological yield function and plastic potential of bulk material. In addition, the fracture process is also well simulated. The simulation results suggest that this model can capture the microplasticity and fracture mechanism of rock-like material. It provides a simple and effective approach to the fracture and plasticity simulation of rock-like material.