Long-Term Strength of Porous Geomaterials by a Micromechanical Model considering Alternate Wetting and Drying Condition
This study is devoted to determining the long-term strength of porous geomaterials under alternate wetting and drying condition by statical shakedown analysis. In the framework of micromechanics of porous materials, Gurson’s hollow sphere model with Drucker-Prager solid matrix is adopted as the repr...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2021/6617453 |
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| author | Jin Zhang Shirong Fu Tao Ni Bei Han Chong Shi |
| author_facet | Jin Zhang Shirong Fu Tao Ni Bei Han Chong Shi |
| author_sort | Jin Zhang |
| collection | DOAJ |
| description | This study is devoted to determining the long-term strength of porous geomaterials under alternate wetting and drying condition by statical shakedown analysis. In the framework of micromechanics of porous materials, Gurson’s hollow sphere model with Drucker-Prager solid matrix is adopted as the representative volume element. The effects of alternate wetting and drying are considered as variable water pressure imposed on the inner boundary surface of the unit cell. The cyclic responses are separated as a pure hydrostatic part under compressive/tensive loads and an additional deviatoric part to capture shear effects. The reduction of the long-term strength due to inner water pressure is observed by the illustration of obtained macroscopic criteria with respect to various load parameters. In addition, the accuracy of the analytical solution is also verified by comparing to the results of FEM-based step-by-step computations. |
| format | Article |
| id | doaj-art-d4692543280b403294f74b958177be6a |
| institution | Kabale University |
| issn | 1468-8115 1468-8123 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-d4692543280b403294f74b958177be6a2025-02-03T01:00:17ZengWileyGeofluids1468-81151468-81232021-01-01202110.1155/2021/66174536617453Long-Term Strength of Porous Geomaterials by a Micromechanical Model considering Alternate Wetting and Drying ConditionJin Zhang0Shirong Fu1Tao Ni2Bei Han3Chong Shi4Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing 210024, ChinaPowerChina Huadong Engineering Corporation Limited, Hangzhou 311122, ChinaIndustrial Engineering Department, University of Padova, Via Venezia 1, Padova 35131, ItalyKey Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing University of Technology, Beijing 100124, ChinaKey Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing 210024, ChinaThis study is devoted to determining the long-term strength of porous geomaterials under alternate wetting and drying condition by statical shakedown analysis. In the framework of micromechanics of porous materials, Gurson’s hollow sphere model with Drucker-Prager solid matrix is adopted as the representative volume element. The effects of alternate wetting and drying are considered as variable water pressure imposed on the inner boundary surface of the unit cell. The cyclic responses are separated as a pure hydrostatic part under compressive/tensive loads and an additional deviatoric part to capture shear effects. The reduction of the long-term strength due to inner water pressure is observed by the illustration of obtained macroscopic criteria with respect to various load parameters. In addition, the accuracy of the analytical solution is also verified by comparing to the results of FEM-based step-by-step computations.http://dx.doi.org/10.1155/2021/6617453 |
| spellingShingle | Jin Zhang Shirong Fu Tao Ni Bei Han Chong Shi Long-Term Strength of Porous Geomaterials by a Micromechanical Model considering Alternate Wetting and Drying Condition Geofluids |
| title | Long-Term Strength of Porous Geomaterials by a Micromechanical Model considering Alternate Wetting and Drying Condition |
| title_full | Long-Term Strength of Porous Geomaterials by a Micromechanical Model considering Alternate Wetting and Drying Condition |
| title_fullStr | Long-Term Strength of Porous Geomaterials by a Micromechanical Model considering Alternate Wetting and Drying Condition |
| title_full_unstemmed | Long-Term Strength of Porous Geomaterials by a Micromechanical Model considering Alternate Wetting and Drying Condition |
| title_short | Long-Term Strength of Porous Geomaterials by a Micromechanical Model considering Alternate Wetting and Drying Condition |
| title_sort | long term strength of porous geomaterials by a micromechanical model considering alternate wetting and drying condition |
| url | http://dx.doi.org/10.1155/2021/6617453 |
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