Modeling of brittle rock failure considering inter- and intra-grain contact failures
Based on a two-scale tessellation technique in Neper, a 3DEC-GBM modeling approach considering inter- and intra-grain contact failures is proposed to study brittle rock failure. Plane strain problems are solved using 3DEC to reduce computation time. A parametric study of inter- and intra-grain conta...
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| Published in | Computers and geotechnics Vol. 101; pp. 224 - 244 |
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| Main Authors | , |
| Format | Journal Article |
| Language | English |
| Published |
New York
Elsevier Ltd
01.09.2018
Elsevier BV |
| Subjects | |
| Online Access | Get full text |
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| Abstract | Based on a two-scale tessellation technique in Neper, a 3DEC-GBM modeling approach considering inter- and intra-grain contact failures is proposed to study brittle rock failure. Plane strain problems are solved using 3DEC to reduce computation time. A parametric study of inter- and intra-grain contact properties is conducted and a calibration procedure is suggested for determining micro-mechanical properties of granular materials. The modeling results indicate that inter- and intra-grain contact strength heterogeneity affects not only the peak strength of rock but also the microcrack spatial location and hence the fracture development path and fracture pattern. |
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| AbstractList | Based on a two-scale tessellation technique in Neper, a 3DEC-GBM modeling approach considering inter- and intra-grain contact failures is proposed to study brittle rock failure. Plane strain problems are solved using 3DEC to reduce computation time. A parametric study of inter- and intra-grain contact properties is conducted and a calibration procedure is suggested for determining micro-mechanical properties of granular materials. The modeling results indicate that inter- and intra-grain contact strength heterogeneity affects not only the peak strength of rock but also the microcrack spatial location and hence the fracture development path and fracture pattern. |
| Author | Cai, Ming Wang, Xin |
| Author_xml | – sequence: 1 givenname: Xin surname: Wang fullname: Wang, Xin organization: MIRARCO – Mining Innovation, Laurentian University, Sudbury P3E 2C6, Canada – sequence: 2 givenname: Ming orcidid: 0000-0002-7403-3206 surname: Cai fullname: Cai, Ming email: mcai@laurentian.ca organization: MIRARCO – Mining Innovation, Laurentian University, Sudbury P3E 2C6, Canada |
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| Snippet | Based on a two-scale tessellation technique in Neper, a 3DEC-GBM modeling approach considering inter- and intra-grain contact failures is proposed to study... |
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| SubjectTerms | Brittle rock failure Brittleness Computation Contact strength heterogeneity Failure Failures Grain Grain-based model Granular materials Heterogeneity Inter-grain Intra-grain Mechanical properties Microcracks Modelling Plane strain Rocks Strain Tessellation |
| Title | Modeling of brittle rock failure considering inter- and intra-grain contact failures |
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