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Hybrid finite-discrete element modelling of dynamic fracture of rocks with various geometries
The hybrid finite-discrete element method Y-2D/3D IDE is applied to model the dynamic fracture of rock specimens with various geometries during impacting a fixed rigid surface. It is found that the modelled primary fractures are highly dependent on the rock geometry determining the weakest plane for a given impact, which agrees well with others' experimental and SPH numerical results. Compared with others' SPH results, Y-2D/3D IDE better simulates the actinomorphic pattern of primary fractures around the impact area and the secondary & tertiary fractures observed in the dynamic fracture experiments. It is concluded that the proposed Y-2D/3D IDE is a valuable tool to model rock dynamic fracture compared with FEM and DEM.
History
Publication title
Applied Mechanics and MaterialsVolume
256-259Pagination
183-186ISSN
1662-7482Department/School
School of EngineeringPublisher
Trans Tech Publications Ltd.Place of publication
SwitzerlandRights statement
Copyright 2013 Trans Tech PublicationsRepository Status
- Restricted