FDEM Modelling of Rock Fracture Process during Three-Point Bending Test under Quasistatic and Dynamic Loading Conditions

A hybrid finite-discrete element method (FDEM) is proposed to model rock fracture initiation and propagation during a three-point bending test under quasistatic dynamic loading conditions. Three models have been implemented in the FDEM transition from continuum discontinuum through fragmentation. The rate effect on behaviour has taken into account by implementation of relationship between static strengths derived experiments. Brazilian tensile strength modelled calibrate FDEM. can well stress show distribution along vertical diameter disc test. Then, study process tests obtain reasonable toughness. After that, effects toughness are discussed, mesh size orientation patterns also discussed. It concluded that three models. capture valuable tool for studying although sensitive orientation.