Rock damage evolution as failure process of hierarchical structure

Publication date: Available online 15 February 2020Source: Physics of the Earth and Planetary InteriorsAuthor(s): S.N. FedotovAbstractIn present study the model is proposed to describe the dynamics of the rock fracture process. Rock formation is assumed in the form of a nested self-similar hierarchical structure. The hierarchical structure scheme is chosen in accordance with the experimentally verified criterion of fracture. The failure probability of each structure level is calculated as a function of time, temperature, material parameters and loading conditions. Knowing the failure probabilities allows one to calculate the stress dynamics in a rock material, failure volumes for each hierarchy level, energy release, etc. The influence of temperature, type of the hierarchical structure, rock material, stress rate on the fracture dynamics is considered. The results of calculations of the rock fracture dynamics are compared with the results of experiments.

Source: Physics of the Earth and Planetary Interiors - February 16, 2020 Category: Physics Source Type: research