| Coupling of material point method and discrete element method for granular flows impacting simulations | |
Liu, Chuanqi1,2; Sun, Qicheng1; Zhou, Gordon G. D.3
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| 2018-07-13 | |
| 发表期刊 | INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING
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| ISSN | 0029-5981 |
| 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 |
| DOI | 10.1002/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 |
| 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. |
| 条目包含的文件 | ||||||
| 文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
| Coupling of material（1326KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 | |
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