Research on the Behavior and Mechanism of Three-Dimensional Crack Growth under Uniaxial Loading
Most of the cracks in the rock masses are in a three-dimensional (3D) state, and it is always a hot topic to reveal the mechanical mechanism of 3D crack growth. In this paper, the research on the growth behavior of 3D crack is performed through laboratory experiments and numerical simulations. Cemen...
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2021/5560253 |
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| author | Zhibo Zhang Shujie Li Xuanye Qin |
| author_facet | Zhibo Zhang Shujie Li Xuanye Qin |
| author_sort | Zhibo Zhang |
| collection | DOAJ |
| description | Most of the cracks in the rock masses are in a three-dimensional (3D) state, and it is always a hot topic to reveal the mechanical mechanism of 3D crack growth. In this paper, the research on the growth behavior of 3D crack is performed through laboratory experiments and numerical simulations. Cement samples with different angles of 3D crack are prepared, and the uniaxial compression experiment is carried out. The results indicate that initiation of preexisting crack with an angle of 45° is easier and shear failure characteristics of corresponding samples are obvious. Through theoretical analysis, the preexisting crack starts to grow at the end of the short axis, along the short axis end to the long axis end of the preexisting crack, the shear effect decreases gradually, and the tearing effect increases gradually. Combined with numerical simulation, the experimental and analysis results are verified, and the preexisting crack growth process is presented. The growth direction of the preexisting crack changes from perpendicular to the crack surface to parallel principal stress direction, and the maximum growth length can reach 1.2 times the minor axis radius of the preexisting crack. The research results can provide an important theoretical basis for revealing the evolution process of the cracks in rock masses. |
| format | Article |
| id | doaj-art-2a9d1eb871c84bfb908405a2a086704c |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-2a9d1eb871c84bfb908405a2a086704c2025-02-03T06:05:36ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422021-01-01202110.1155/2021/55602535560253Research on the Behavior and Mechanism of Three-Dimensional Crack Growth under Uniaxial LoadingZhibo Zhang0Shujie Li1Xuanye Qin2School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaSchool of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaSchool of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaMost of the cracks in the rock masses are in a three-dimensional (3D) state, and it is always a hot topic to reveal the mechanical mechanism of 3D crack growth. In this paper, the research on the growth behavior of 3D crack is performed through laboratory experiments and numerical simulations. Cement samples with different angles of 3D crack are prepared, and the uniaxial compression experiment is carried out. The results indicate that initiation of preexisting crack with an angle of 45° is easier and shear failure characteristics of corresponding samples are obvious. Through theoretical analysis, the preexisting crack starts to grow at the end of the short axis, along the short axis end to the long axis end of the preexisting crack, the shear effect decreases gradually, and the tearing effect increases gradually. Combined with numerical simulation, the experimental and analysis results are verified, and the preexisting crack growth process is presented. The growth direction of the preexisting crack changes from perpendicular to the crack surface to parallel principal stress direction, and the maximum growth length can reach 1.2 times the minor axis radius of the preexisting crack. The research results can provide an important theoretical basis for revealing the evolution process of the cracks in rock masses.http://dx.doi.org/10.1155/2021/5560253 |
| spellingShingle | Zhibo Zhang Shujie Li Xuanye Qin Research on the Behavior and Mechanism of Three-Dimensional Crack Growth under Uniaxial Loading Advances in Materials Science and Engineering |
| title | Research on the Behavior and Mechanism of Three-Dimensional Crack Growth under Uniaxial Loading |
| title_full | Research on the Behavior and Mechanism of Three-Dimensional Crack Growth under Uniaxial Loading |
| title_fullStr | Research on the Behavior and Mechanism of Three-Dimensional Crack Growth under Uniaxial Loading |
| title_full_unstemmed | Research on the Behavior and Mechanism of Three-Dimensional Crack Growth under Uniaxial Loading |
| title_short | Research on the Behavior and Mechanism of Three-Dimensional Crack Growth under Uniaxial Loading |
| title_sort | research on the behavior and mechanism of three dimensional crack growth under uniaxial loading |
| url | http://dx.doi.org/10.1155/2021/5560253 |
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