Study on the interaction between particle shape and particle breakage of coral sand by discrete element method
A series of biaxial tests with different initial particle shapes, confining pressures, bond strengths and depositional angles were conducted on coral sand by using a 2D discrete element method simulation. The interactions between particle shape and particle breakage were investigated, and their comb...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2024-01-01
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| Series: | Frontiers in Earth Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/feart.2024.1343307/full |
| _version_ | 1797338065711136768 |
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| author | Xuejun Liu Kaifeng Zeng Fuyu Xiang Chunhai Wang Xianming Hou Yanjun Li |
| author_facet | Xuejun Liu Kaifeng Zeng Fuyu Xiang Chunhai Wang Xianming Hou Yanjun Li |
| author_sort | Xuejun Liu |
| collection | DOAJ |
| description | A series of biaxial tests with different initial particle shapes, confining pressures, bond strengths and depositional angles were conducted on coral sand by using a 2D discrete element method simulation. The interactions between particle shape and particle breakage were investigated, and their combined effects on the mechanical behavior of coral sand were analyzed. The test results showed that particle breakage considerably weakens the effect of particle shape and inherent anisotropy on shear strength. The difference between the internal friction angles of unbreakable and breakable agglomerates Δφ decreases with increasing aspect ratio AR, sphericity S, and depositional angle θ. There exists a unique relationship between the relative breakage BrDe and the input energy E for the same agglomerates, which is independent of axial strain and confining pressure. However, this relationship is significantly influenced by the agglomerate shape and depositional angle, and irregular and low depositional angle specimens are more easily broken. In addition, the evolution of the aspect ratio AR and sphericity S of agglomerates was controlled by particle breakage, regardless of the axial strain, confining pressure, bond strength and depositional angle, and these trends were determined by the initial particle shape. |
| first_indexed | 2024-03-08T09:25:38Z |
| format | Article |
| id | doaj.art-167eb189031f455981d6a5f1e09e9e91 |
| institution | Directory Open Access Journal |
| issn | 2296-6463 |
| language | English |
| last_indexed | 2024-03-08T09:25:38Z |
| publishDate | 2024-01-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Earth Science |
| spelling | doaj.art-167eb189031f455981d6a5f1e09e9e912024-01-31T10:02:44ZengFrontiers Media S.A.Frontiers in Earth Science2296-64632024-01-011210.3389/feart.2024.13433071343307Study on the interaction between particle shape and particle breakage of coral sand by discrete element methodXuejun Liu0Kaifeng Zeng1Fuyu Xiang2Chunhai Wang3Xianming Hou4Yanjun Li5Xinjiang Institute of Architectural Sciences (Limited Liability Company), Urumqi, ChinaSchool of Civil and Hydraulic Engineering, Huazhong University of Science and Technology, Wuhan, Hubei, ChinaSchool of Civil and Hydraulic Engineering, Huazhong University of Science and Technology, Wuhan, Hubei, ChinaSchool of Civil and Hydraulic Engineering, Huazhong University of Science and Technology, Wuhan, Hubei, ChinaXinjiang Institute of Architectural Sciences (Limited Liability Company), Urumqi, ChinaXinjiang Institute of Architectural Sciences (Limited Liability Company), Urumqi, ChinaA series of biaxial tests with different initial particle shapes, confining pressures, bond strengths and depositional angles were conducted on coral sand by using a 2D discrete element method simulation. The interactions between particle shape and particle breakage were investigated, and their combined effects on the mechanical behavior of coral sand were analyzed. The test results showed that particle breakage considerably weakens the effect of particle shape and inherent anisotropy on shear strength. The difference between the internal friction angles of unbreakable and breakable agglomerates Δφ decreases with increasing aspect ratio AR, sphericity S, and depositional angle θ. There exists a unique relationship between the relative breakage BrDe and the input energy E for the same agglomerates, which is independent of axial strain and confining pressure. However, this relationship is significantly influenced by the agglomerate shape and depositional angle, and irregular and low depositional angle specimens are more easily broken. In addition, the evolution of the aspect ratio AR and sphericity S of agglomerates was controlled by particle breakage, regardless of the axial strain, confining pressure, bond strength and depositional angle, and these trends were determined by the initial particle shape.https://www.frontiersin.org/articles/10.3389/feart.2024.1343307/fulldiscrete element methodcoral sandparticle shapeparticle breakageinherent anisotropyinput energy |
| spellingShingle | Xuejun Liu Kaifeng Zeng Fuyu Xiang Chunhai Wang Xianming Hou Yanjun Li Study on the interaction between particle shape and particle breakage of coral sand by discrete element method Frontiers in Earth Science discrete element method coral sand particle shape particle breakage inherent anisotropy input energy |
| title | Study on the interaction between particle shape and particle breakage of coral sand by discrete element method |
| title_full | Study on the interaction between particle shape and particle breakage of coral sand by discrete element method |
| title_fullStr | Study on the interaction between particle shape and particle breakage of coral sand by discrete element method |
| title_full_unstemmed | Study on the interaction between particle shape and particle breakage of coral sand by discrete element method |
| title_short | Study on the interaction between particle shape and particle breakage of coral sand by discrete element method |
| title_sort | study on the interaction between particle shape and particle breakage of coral sand by discrete element method |
| topic | discrete element method coral sand particle shape particle breakage inherent anisotropy input energy |
| url | https://www.frontiersin.org/articles/10.3389/feart.2024.1343307/full |
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