IMHE OpenIR  > 山地灾害与地表过程重点实验室
Numerical Simulation of Granular Flows by DDA
Language英语
Qingqing Yang; Fei Cai; Keizo Ugai; Zhiman Su; Lingyu Xu
Corresponding AuthorQingqing Yang
2013
Source PublicationInternational Symposium on Earthquake-Induced Landslides, Kiryu, Japan, 2012 ; Earthquake-Induced Landslides: Proceedings of the International Symposium on Earthquake-Induced Landslides, Kiryu, Japan, 2012
Pages643-648
Conference DateNovember 7-9, 2012
Conference Placekiryu, Japan
Funding OrganizationKeizo Ugai ; Hiroshi Yagi ; Akihiko Wakai
AbstractDespite of extensive efforts made by many researchers, the mechanisms involved in rapid, dry, dense granular flows are thought only understood in broad line. In this paper, Discontinuous Deformation Analysis (DDA) was applied to simulate some experimental flows in a large flume and a large rock avalanche triggered by the Wenchuan earthquake, as a step to make clear some mechanisms in rock avalanches. Simulated results show that DDA was able to capture essential characteristics of granular flows and friction coefficient was a key parameter in the numerical analysis. Furthermore, the apparent friction coefficient, which was determined by field investigation, served as a reasonable parameter to reproduce the field event, rather than the friction coefficient measured in the laboratory.
KeywordDiscontinuous Deformation Analysis Granular Flow Velocity Run-out
DOI10.1007/978-3-642-32238-9_69
ISBN978-3-642-32237-2
Citation statistics
Document Type会议论文
Identifierhttp://ir.imde.ac.cn/handle/131551/6632
Collection山地灾害与地表过程重点实验室
Corresponding AuthorQingqing Yang
Recommended Citation
GB/T 7714
Qingqing Yang,Fei Cai,Keizo Ugai,et al. Numerical Simulation of Granular Flows by DDA[C],2013:643-648.
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