Micromechanics Digital Rock: Parameterization of Consolidation Level using a Grain Contact Model
The mechanical behaviour of sedimentary rocks is conditioned by the interactions at the grain-grain contacts. We present a micromechanics digital rock workflow based on a cohesive contact model and introduce a general parameterization that can capture two extreme contact behaviours: free grains and...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2023-01-01
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| Series: | E3S Web of Conferences |
| Online Access: | https://www.e3s-conferences.org/articles/e3sconf/pdf/2023/03/e3sconf_sca2023_01015.pdf |
| _version_ | 1797938503136313344 |
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| author | Sun Zhuang Salazar-Tio Rafael Fager Andrew Crouse Bernd |
| author_facet | Sun Zhuang Salazar-Tio Rafael Fager Andrew Crouse Bernd |
| author_sort | Sun Zhuang |
| collection | DOAJ |
| description | The mechanical behaviour of sedimentary rocks is conditioned by the interactions at the grain-grain contacts. We present a micromechanics digital rock workflow based on a cohesive contact model and introduce a general parameterization that can capture two extreme contact behaviours: free grains and fixed grains, as well as any intermediate degree of grain consolidation. With this parametric cohesive contact model, we can simulate a wide range of sedimentary rocks, from unconsolidated to well-consolidated rocks. We present a benchmark study on several samples and compare with laboratory-measured elastic moduli to calibrate its degree of consolidation. Simulations that do not include the grain contact modelling, tend to overestimate the elastic moduli, which manifests the significance of this contribution to capture well the grain contact behaviour. To demonstrate the impact of properly capturing the degree of consolidation on the rock strength and failure pattern, we present results for numerical uniaxial compression testing. This workflow provides physics-based solution to complex grain contact behaviour, which complements laboratory core analysis, and can be useful to reveal underlying grain-scale processes governing rock mechanical behaviour. |
| first_indexed | 2024-04-10T19:00:40Z |
| format | Article |
| id | doaj.art-f005db93111b449c856aee5cc3e2e348 |
| institution | Directory Open Access Journal |
| issn | 2267-1242 |
| language | English |
| last_indexed | 2024-04-10T19:00:40Z |
| publishDate | 2023-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | E3S Web of Conferences |
| spelling | doaj.art-f005db93111b449c856aee5cc3e2e3482023-01-31T09:55:53ZengEDP SciencesE3S Web of Conferences2267-12422023-01-013660101510.1051/e3sconf/202336601015e3sconf_sca2023_01015Micromechanics Digital Rock: Parameterization of Consolidation Level using a Grain Contact ModelSun Zhuang0Salazar-Tio Rafael1Fager Andrew2Crouse Bernd3Dassault SystèmesDassault SystèmesDassault SystèmesDassault SystèmesThe mechanical behaviour of sedimentary rocks is conditioned by the interactions at the grain-grain contacts. We present a micromechanics digital rock workflow based on a cohesive contact model and introduce a general parameterization that can capture two extreme contact behaviours: free grains and fixed grains, as well as any intermediate degree of grain consolidation. With this parametric cohesive contact model, we can simulate a wide range of sedimentary rocks, from unconsolidated to well-consolidated rocks. We present a benchmark study on several samples and compare with laboratory-measured elastic moduli to calibrate its degree of consolidation. Simulations that do not include the grain contact modelling, tend to overestimate the elastic moduli, which manifests the significance of this contribution to capture well the grain contact behaviour. To demonstrate the impact of properly capturing the degree of consolidation on the rock strength and failure pattern, we present results for numerical uniaxial compression testing. This workflow provides physics-based solution to complex grain contact behaviour, which complements laboratory core analysis, and can be useful to reveal underlying grain-scale processes governing rock mechanical behaviour.https://www.e3s-conferences.org/articles/e3sconf/pdf/2023/03/e3sconf_sca2023_01015.pdf |
| spellingShingle | Sun Zhuang Salazar-Tio Rafael Fager Andrew Crouse Bernd Micromechanics Digital Rock: Parameterization of Consolidation Level using a Grain Contact Model E3S Web of Conferences |
| title | Micromechanics Digital Rock: Parameterization of Consolidation Level using a Grain Contact Model |
| title_full | Micromechanics Digital Rock: Parameterization of Consolidation Level using a Grain Contact Model |
| title_fullStr | Micromechanics Digital Rock: Parameterization of Consolidation Level using a Grain Contact Model |
| title_full_unstemmed | Micromechanics Digital Rock: Parameterization of Consolidation Level using a Grain Contact Model |
| title_short | Micromechanics Digital Rock: Parameterization of Consolidation Level using a Grain Contact Model |
| title_sort | micromechanics digital rock parameterization of consolidation level using a grain contact model |
| url | https://www.e3s-conferences.org/articles/e3sconf/pdf/2023/03/e3sconf_sca2023_01015.pdf |
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