Study on the fracture behavior in clayey geomaterials under moisture diffusion by phase field modeling
文献类型：期刊论文
| 作者 | Lan, Zijun1,3; Chen, Weizhong3; Yuan, Jingqiang3; Wang, Dong2; Zhou, Yun3; Shen, Kai1,3 |
| 刊名 | COMPUTERS AND GEOTECHNICS
 |
| 出版日期 | 2024-07-01 |
| 卷号 | 171页码:19 |
| 关键词 | Clayey geomaterials Moisture diffusion Humidification or desiccation Phase field model Cracking behavior |
| ISSN号 | 0266-352X |
| DOI | 10.1016/j.compgeo.2024.106373 |
| 英文摘要 | Clayey geomaterials are prone to cracking under changing moisture conditions, which substantially compromises their engineering properties. When moisture intrusion and boundary constraints act in tandem on geomaterials, the relevance of multi-physics field processes to complex cracking phenomena remains underexplored. To provide deeper insight into the effect of moisture transport on the cracking behavior of clayey geomaterials, a theoretical model for moisture-induced fracture is proposed. The model combines moisture diffusion, volume deformation dependent on moisture conditions, and phase field fracture, and is solved using the finite element method with a user-defined element subroutine. The developed subroutine is applied to simulate soil desiccation experiments and mudstone water absorption tests. The results reveal that moisture gradients induce non-uniform expansion or shrinkage within the clayey geomaterials. The neighboring geomaterial particles mutually constrain these deformations, resulting in an internal stress field that serves as the primary cause of cracking. Stability and sensitivity analyses validate the reliability of the numerical framework. The proposed model can effectively simulate crack initiation, extension, and convergence during humidification or desiccation processes in both two and three dimensions. This study charts a feasible path for numerical simulation and mechanical mechanism exploration of cracking behaviors in clayey geomaterials during water migration. |
| 资助项目 | Second Tibetan Plateau Scientific Expedition and Research Program (STEP)[2019QZKK0904] ; National Natural Science Foundation of China[42293353] ; National Natural Science Foundation of China[42293355] ; National Natural Science Foundation of China[42293350] ; Key Deployment Project of Chinese Academy of Sciences[ZDRW-ZS-2021-3] ; Science and Technology Planning Project of Xizang Autonomous Region, China[XZ202201ZY0021G] |
| WOS研究方向 | Computer Science ; Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001233782400001 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/41472]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Yuan, Jingqiang |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.China Railway Eryuan Engn Grp Co Ltd, Chengdu 610031, Peoples R China 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lan, Zijun,Chen, Weizhong,Yuan, Jingqiang,et al. Study on the fracture behavior in clayey geomaterials under moisture diffusion by phase field modeling[J]. COMPUTERS AND GEOTECHNICS,2024,171:19. |
| APA | Lan, Zijun,Chen, Weizhong,Yuan, Jingqiang,Wang, Dong,Zhou, Yun,&Shen, Kai.(2024).Study on the fracture behavior in clayey geomaterials under moisture diffusion by phase field modeling.COMPUTERS AND GEOTECHNICS,171,19. |
| MLA | Lan, Zijun,et al."Study on the fracture behavior in clayey geomaterials under moisture diffusion by phase field modeling".COMPUTERS AND GEOTECHNICS 171(2024):19. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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