Viscous Elastoplastic SPH Model for Long-Distance High-Speed Landslide | |
Zhang WT(张炆涛); Shi CQ(石传奇); An Y(安翼); Yang SH(杨世豪); Liu QQ(刘青泉) | |
发表期刊 | INTERNATIONAL JOURNAL OF COMPUTATIONAL METHODS |
2019-03-01 | |
卷号 | 16期号:2页码:AR1846011 |
ISSN | 0219-8762 |
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. |
关键词 | Granular solid regime granular liquid regime viscous elastoplastic model |
DOI | 10.1142/S0219876218460118 |
收录类别 | SCI ; EI |
语种 | 英语 |
WOS记录号 | WOS:000451737700012 |
关键词[WOS] | DEFORMATION ; SIMULATION ; FLUIDIZATION ; AVALANCHES ; FLOWS |
WOS研究方向 | Engineering, Multidisciplinary ; Mathematics, Interdisciplinary Applications |
WOS类目 | Engineering ; Mathematics |
项目资助者 | National Natural Science Foundation of China [11672310, 11432015] ; National Basic Research Program of China [2014 CB04680202] |
课题组名称 | LMFS水环境流体力学(LEM) |
论文分区 | Q3 |
力学所作者排名 | 1 |
RpAuthor | Liu, QQ |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://dspace.imech.ac.cn/handle/311007/77667 |
专题 | 流固耦合系统力学重点实验室 |
作者单位 | 1.Chinese Acad Sci, Inst Mech, Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 3.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[J]. INTERNATIONAL JOURNAL OF COMPUTATIONAL METHODS,2019,16,2,:AR1846011. |
APA | Zhang WT,Shi CQ,An Y,Yang SH,&Liu QQ.(2019).Viscous Elastoplastic SPH Model for Long-Distance High-Speed Landslide.INTERNATIONAL JOURNAL OF COMPUTATIONAL METHODS,16(2),AR1846011. |
MLA | Zhang WT,et al."Viscous Elastoplastic SPH Model for Long-Distance High-Speed Landslide".INTERNATIONAL JOURNAL OF COMPUTATIONAL METHODS 16.2(2019):AR1846011. |
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