Study on the effects of fissure geometric characteristics on the mechanical behavior and failure mechanism of granite under uniaxial compression test
Abstract Taking the granite specimen with multiple fissures as the main research object, the mechanical response and failure mechanism of the granite specimen under uniaxial compression tests were analyzed by constructing a numerical analysis model based on cohesive element and Voronoi polygons tech...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-02-01
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| Series: | Scientific Reports |
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| Online Access: | https://doi.org/10.1038/s41598-025-88278-9 |
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| author | Zhaolong Sang Donghui Ma Yaoyao Meng Qian Yin Xiaowei Liu Zhimin Sun Wei Wang |
| author_facet | Zhaolong Sang Donghui Ma Yaoyao Meng Qian Yin Xiaowei Liu Zhimin Sun Wei Wang |
| author_sort | Zhaolong Sang |
| collection | DOAJ |
| description | Abstract Taking the granite specimen with multiple fissures as the main research object, the mechanical response and failure mechanism of the granite specimen under uniaxial compression tests were analyzed by constructing a numerical analysis model based on cohesive element and Voronoi polygons techniques. Furthermore, the effects of geometric characteristics (spacing, length, width) on the peak mechanical response, damage energy, number and proportion of micro-cracks, failure mode and so on are further studied. The results show that the numerical analysis model can accurately reproduce the complex intergranular occlusion and multi fissures network structure of granite specimens, and reveal the dominant role of fissure angle on the failure mode, and the significant influence of fissure geometric characteristics on the number and proportion of micro-cracks, peak mechanical response and damage energy. The crack path and failure mode are significantly affected by the change of fissure angle and spacing, while the increase of fissure length and width leads to more rapid failure and lower peak mechanical response. The damage energy increases gradually with the increase of fissure spacing, but decreases with the increase of fissure length and width. This study not only deepens the understanding of the mechanical behavior of granite samples under complex geological environments, but also provides theoretical support for accurate assessment and effective reinforcement of rock mass stability in engineering practice. |
| format | Article |
| id | doaj-art-b1dbe5a1eef9470681b4fae417e2e810 |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-b1dbe5a1eef9470681b4fae417e2e8102025-02-02T12:17:32ZengNature PortfolioScientific Reports2045-23222025-02-0115113810.1038/s41598-025-88278-9Study on the effects of fissure geometric characteristics on the mechanical behavior and failure mechanism of granite under uniaxial compression testZhaolong Sang0Donghui Ma1Yaoyao Meng2Qian Yin3Xiaowei Liu4Zhimin Sun5Wei Wang6College of Architecture and Civil Engineering, Beijing University of TechnologyCollege of Architecture and Civil Engineering, Beijing University of TechnologyState Key Laboratory of Digital and Intelligent Technology for Unmanned Coal Mining, Anhui University of Science and TechnologyState Key Laboratory of Intelligent Construction and Healthy Operation and Maintenance of Deep Underground Engineering, China University of Mining and TechnologySchool of Data Science and Engineering, Xian Innovation College of Yanan UniversityChina Construction Second Engineering Bureau Co. LtdCollege of Architecture and Civil Engineering, Beijing University of TechnologyAbstract Taking the granite specimen with multiple fissures as the main research object, the mechanical response and failure mechanism of the granite specimen under uniaxial compression tests were analyzed by constructing a numerical analysis model based on cohesive element and Voronoi polygons techniques. Furthermore, the effects of geometric characteristics (spacing, length, width) on the peak mechanical response, damage energy, number and proportion of micro-cracks, failure mode and so on are further studied. The results show that the numerical analysis model can accurately reproduce the complex intergranular occlusion and multi fissures network structure of granite specimens, and reveal the dominant role of fissure angle on the failure mode, and the significant influence of fissure geometric characteristics on the number and proportion of micro-cracks, peak mechanical response and damage energy. The crack path and failure mode are significantly affected by the change of fissure angle and spacing, while the increase of fissure length and width leads to more rapid failure and lower peak mechanical response. The damage energy increases gradually with the increase of fissure spacing, but decreases with the increase of fissure length and width. This study not only deepens the understanding of the mechanical behavior of granite samples under complex geological environments, but also provides theoretical support for accurate assessment and effective reinforcement of rock mass stability in engineering practice.https://doi.org/10.1038/s41598-025-88278-9Rock mechanicsFissured graniteCohesive zone modelVoronoi polygonsComplex fissures |
| spellingShingle | Zhaolong Sang Donghui Ma Yaoyao Meng Qian Yin Xiaowei Liu Zhimin Sun Wei Wang Study on the effects of fissure geometric characteristics on the mechanical behavior and failure mechanism of granite under uniaxial compression test Scientific Reports Rock mechanics Fissured granite Cohesive zone model Voronoi polygons Complex fissures |
| title | Study on the effects of fissure geometric characteristics on the mechanical behavior and failure mechanism of granite under uniaxial compression test |
| title_full | Study on the effects of fissure geometric characteristics on the mechanical behavior and failure mechanism of granite under uniaxial compression test |
| title_fullStr | Study on the effects of fissure geometric characteristics on the mechanical behavior and failure mechanism of granite under uniaxial compression test |
| title_full_unstemmed | Study on the effects of fissure geometric characteristics on the mechanical behavior and failure mechanism of granite under uniaxial compression test |
| title_short | Study on the effects of fissure geometric characteristics on the mechanical behavior and failure mechanism of granite under uniaxial compression test |
| title_sort | study on the effects of fissure geometric characteristics on the mechanical behavior and failure mechanism of granite under uniaxial compression test |
| topic | Rock mechanics Fissured granite Cohesive zone model Voronoi polygons Complex fissures |
| url | https://doi.org/10.1038/s41598-025-88278-9 |
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