In this paper, the cyclic constitutive equations were proposed to describe the constitutive
behavior of cyclic loading and unloading. Firstly, a coupled damage variable was derived …

The fracture behaviour and crack propagation features of coal under coupled static-dynamic
loading conditions are important when evaluating the dynamic failure of coal. In this study …

Fracturing process and possible factors influencing crack initiation, propagation and
coalescence of granitic rocks are investigated using a grain-based finite-discrete element …

The crack closure stress σ cc, crack initiation stress σ ci and crack damage stress σ cd are
important mechanical parameters to describe the brittle failure mechanism of hard rock. To …

Rock materials are typically heterogeneous. Traditional digital image processing (DIP)
technology and the grain-based model (GBM) method are difficult to apply to engineering …

The aim of this study is to understand the effects of micro-heterogeneity, such as grain size,
morphology and mineralogy, on the initiation, propagation and coalescence of microcracks …

Construction rocks often exhibit a grain structure with spatially correlated grain formations,
posing a challenge in quantifying and predicting their mechanical properties. Effectively …

Rock heterogeneities often control microcracking on the grain scale and therefore the
mechanical behavior of the rock on the macroscale. We therefore studied the fracture …

Grain-based models (GBMs) are widely used to analyse the micromechanical characteristics
of granite. However, the classical two-dimensional (2D)-GBM has some shortcomings: poor …

To study the rock-breaking mechanism resulting from high-pressure gas blasting, a hybrid
continuum-discontinuum method considering the actual breakage of rocks was presented in …