Viscous Elastoplastic SPH Model for Long-Distance High-Speed Landslide
文献类型：会议论文
| 作者 | Zhang WT(张炆涛) ; Shi CQ(石传奇); An Y(安翼); Yang SH(杨世豪); Liu QQ(刘青泉)
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| 出版日期 | 2019-03-01 |
| 会议日期 | OCT 17-20, 2017 |
| 会议地点 | Peking Univ, Beijing, PEOPLES R CHINA |
| 关键词 | Granular solid regime granular liquid regime viscous elastoplastic model |
| 页码 | 1846011 |
| 英文摘要 | In the landslide-induced debris flow problem, the soil slope experiences three stages: slope instability, debris flow and deposition. This study develops a three-dimensional smoothed particle hydrodynamics model which adopts elastoplastic viscous constitutive relation to simulate this complex process. The Drucker-Prager model with nonassociated plastic flow rule is implemented for slope instability and deposition and constant viscosity is used for propagation stage. The model is validated with laboratory dry-granular dam-break experiments. Good agreements are found between the simulated results and the laboratory data on both the shape evolution and the velocity field. Then, we use the model to study the Yigong avalanche after detailed discussion of model parameters, the time of duration, deposited scope and estimated velocity essentially agree with site survey. Thus, the model is able to simulate instability and flow of dense granular materials at both experimental and field scale, and it could be a powerful tool for the landslide-induced debris flow study. |
| 资助机构 | National Natural Science Foundation of China [11672310, 11432015]; National Basic Research Program of China [2014 CB04680202] |
| 会议录 | INTERNATIONAL JOURNAL OF COMPUTATIONAL METHODS
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| 语种 | 英语 |
| WOS记录号 | WOS:000451737700012 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/78551]  |
| 专题 | 力学研究所_流固耦合系统力学重点实验室(2012-) |
| 作者单位 | 1.{Zhang, Wentao、Shi, Chuanqi、An, Yi、Yang, Shihao} Chinese Acad Sci, Inst Mech, Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China 2.{Zhang, Wentao、Shi, Chuanqi、Yang, Shihao} Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 3.{Liu, Qingquan} Beijing Inst Technol, Sch Aerosp Engn, Dept Mech, Beijing 100081, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang WT,Shi CQ,An Y,et al. Viscous Elastoplastic SPH Model for Long-Distance High-Speed Landslide[C]. 见:. Peking Univ, Beijing, PEOPLES R CHINA. OCT 17-20, 2017. |
入库方式： OAI收割
来源：力学研究所
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