On the use of a unified constitutive model for modelling slope large deformations with material point method
文献类型：期刊论文
| 作者 | Wang, Bin1,3; Chen, Penglin1,3; Li, Xia2; Zhang, Zixuan2 |
| 刊名 | COMPUTERS AND GEOTECHNICS
 |
| 出版日期 | 2025 |
| 卷号 | 177页码:15 |
| 关键词 | Material point method Unified constitutive model Dynamic stress ratio Solid-fluid transition Landslide |
| ISSN号 | 0266-352X |
| DOI | 10.1016/j.compgeo.2024.106838 |
| 英文摘要 | Landslides and debris flows can have devastating effects, particularly when movement involves a transition from solid-like to fluid-like process. The elastoplastic constitutive model has a limited ability to describe the entire movement process; thus, this paper establishes a unified constitutive model comprising a hypoplastic model and Bagnold model within a GPU-accelerated material point method (MPM) framework. The model is validated first through low-speed direct shear tests to demonstrate its ability to describe solid-state friction behaviour, then collision behaviour under rapid flow conditions is examined using high-speed annular shear tests. The validity of the unified model for geotechnical engineering large deformations is subsequently verified using column collapse, where the superiority of the unified model over the traditional constitutive model in describing the large deformation process is demonstrated. An index, the dynamic stress ratio, is comprehensively analysed over the whole column failure process and the dynamic stress ratio is found to correlate well with the second-order work conversion criterion, distinguishing the transition of movement from solid-like to fluid-like stage. Finally, the constitutive model is applied to a hazard assessment of the Qianjiangping and Tatopani landslides in which the applicability and stability of the model along with the MPM framework are further demonstrated. |
| 资助项目 | National Natural Science Foundation of China[52379111] ; National Natural Science Foundation of China[51979270] ; CAS Pioneer Hundred Talents Program |
| WOS研究方向 | Computer Science ; Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001339577500001 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/42916]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Wang, Bin; Li, Xia |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China 2.Southeast Univ, Sch Civil Engn, Nanjing 210018, Peoples R China 3.Univ Chinese Acad Sci, Beijing 10049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Bin,Chen, Penglin,Li, Xia,et al. On the use of a unified constitutive model for modelling slope large deformations with material point method[J]. COMPUTERS AND GEOTECHNICS,2025,177:15. |
| APA | Wang, Bin,Chen, Penglin,Li, Xia,&Zhang, Zixuan.(2025).On the use of a unified constitutive model for modelling slope large deformations with material point method.COMPUTERS AND GEOTECHNICS,177,15. |
| MLA | Wang, Bin,et al."On the use of a unified constitutive model for modelling slope large deformations with material point method".COMPUTERS AND GEOTECHNICS 177(2025):15. |
入库方式： OAI收割
来源：武汉岩土力学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。