Coupling of material point method and discrete element method for granular flows impacting simulations
文献类型：期刊论文
| 作者 | Liu, Chuanqi1,2; Sun, Qicheng1; Zhou, Gordon G. D.3
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| 刊名 | INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING
 |
| 出版日期 | 2018-07-13 |
| 卷号 | 115期号:2页码:172-188 |
| 关键词 | discrete element method granular flows impacting estimation material point method |
| ISSN号 | 0029-5981 |
| DOI | 10.1002/nme.5800 |
| 英文摘要 | 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. |
| 语种 | 英语 |
| WOS记录号 | WOS:000434640700002 |
| 出版者 | WILEY |
| 源URL | [http://ir.imde.ac.cn/handle/131551/23159]  |
| 专题 | 成都山地灾害与环境研究所_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 |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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