IMHE OpenIR  > 山地灾害与地表过程重点实验室
Coupling of material point method and discrete element method for granular flows impacting simulations
Liu, Chuanqi1,2; Sun, Qicheng1; Zhou, Gordon G. D.3
2018-07-13
Source PublicationINTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING
ISSN0029-5981
Volume115Issue:2Pages:172-188
Contribution Rank3
AbstractGranular debris flows are composed of coarse solid particles, which may be from disaggregated landslides or well-weathered rocks on a hill surface. The estimation of agitation and the flow process of granular debris flows are of great importance in the prevention of disasters. In this work, we conduct physical experiments of sandpile collapse, impacting 3 packed wooden blocks. The flow profile, run-out distance, and rotation of blocks are measured. To simulate the process, we adopt a material point method (MPM) to model granular flows and a deformable discrete element method (DEM) to model blocks. Each block is treated as comprising 9 material points to couple the MPM and DEM, and the acceleration of grid nodes arising from the contacts between granular material and blocks is projected to the discrete element nodes working as body forces. The contacts between blocks are detected using the shrunken point method. The simulation results agree well with the experimental results. Thus, the coupling method of MPM and DEM developed in this work would be helpful in the damage analysis of buildings under impact from the debris flows.
Keyworddiscrete element method granular flows impacting estimation material point method
DOI10.1002/nme.5800
Indexed BySCI
WOS KeywordIN-CELL METHOD ; CONTACT ALGORITHM ; SOLID MECHANICS ; FLUID-FLOW ; DEFORMATION ; PARTICLES ; SPH ; MPM
Language英语
Funding ProjectNational Natural Science Foundation of China[91634202] ; National Natural Science Foundation of China[11572178]
WOS Research AreaEngineering ; Mathematics
WOS SubjectEngineering, Multidisciplinary ; Mathematics, Interdisciplinary Applications
WOS IDWOS:000434640700002
PublisherWILEY
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/23159
Collection山地灾害与地表过程重点实验室
Corresponding AuthorSun, Qicheng
Affiliation1.Tsinghua Univ, State Key Lab Hydrosci & Engn, Beijing, Peoples R China
2.Princeton Univ, Dept Civil & Environm Engn, Princeton, NJ 08544 USA
3.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu, Sichuan, Peoples R China
Recommended Citation
GB/T 7714
Liu, Chuanqi,Sun, Qicheng,Zhou, Gordon G. D.. Coupling of material point method and discrete element method for granular flows impacting simulations[J]. INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING,2018,115(2):172-188.
APA Liu, Chuanqi,Sun, Qicheng,&Zhou, Gordon G. D..(2018).Coupling of material point method and discrete element method for granular flows impacting simulations.INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING,115(2),172-188.
MLA Liu, Chuanqi,et al."Coupling of material point method and discrete element method for granular flows impacting simulations".INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING 115.2(2018):172-188.
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