期刊
ENGINEERING FRACTURE MECHANICS
卷 151, 期 -, 页码 70-91出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.engfracmech.2015.11.006
关键词
Numerical investigation; Three-dimensional fracture model; Mesh size sensitivity; Mesh orientation sensitivity; Combined finite-discrete element method
类别
资金
- Department of Earth Science and Engineering, Imperial College London
- EPSRC grant [EP/H030123/1]
- EPSRC [EP/H030123/1] Funding Source: UKRI
- NERC [NE/L000660/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/H030123/1, GR/S42699/01] Funding Source: researchfish
- Natural Environment Research Council [NE/L000660/1] Funding Source: researchfish
Recently a new three-dimensional fracture model has been developed in the context of the combined finite-discrete element method. In order to provide quantitative guidance for engineering applications, mesh size and orientation sensitivity are investigated by specially designed numerical tests. The mesh size sensitivity is analysed by modelling a single tensile fracture propagation problem and three-point bending tests using a series of models with the same geometry but different structured mesh sizes. The mesh orientation sensitivity is investigated by diametrically compressing a disc specimen of unstructured meshes from different angles. The computational efficiency of the three-dimensional fracture model is also studied. (C) 2015 The Authors. Published by Elsevier Ltd.
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