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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
发表期刊INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING
ISSN0029-5981
卷号115期号:2页码:172-188
摘要Granular 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.
关键词discrete element method granular flows impacting estimation material point method
DOI10.1002/nme.5800
关键词[WOS]IN-CELL METHOD ; CONTACT ALGORITHM ; SOLID MECHANICS ; FLUID-FLOW ; DEFORMATION ; PARTICLES ; SPH ; MPM
语种英语
资助项目National Natural Science Foundation of China[91634202] ; National Natural Science Foundation of China[11572178]
WOS研究方向Engineering ; Mathematics
WOS类目Engineering, Multidisciplinary ; Mathematics, Interdisciplinary Applications
WOS记录号WOS:000434640700002
项目资助者National Natural Science Foundation of China
出版者WILEY
引用统计
文献类型期刊论文
条目标识符http://ir.imde.ac.cn/handle/131551/23159
专题山地灾害与地表过程重点实验室
通讯作者Sun, Qicheng
作者单位1.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
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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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