IMHE OpenIR  > 成都山地所知识仓储(2009年以前)
Some open problems in granular matter mechanics
Sun, Qicheng1; Wang, Guangqian1; Hu, Kaiheng2
Corresponding AuthorSun, Qicheng
AbstractGranular matter is a large assemblage of solid particles, which is fundamentally different from any other type of matters, such as solid and liquid. Most models presented for granular matter are phenomenological and are only suitable for solving engineering problems. Many fundamental mechanical problems remain open. By analyzing characteristics of internal state structure, we propose that granular matter is intrinsically multiscale, i.e. microscale of particle size, mesoscale of force chain, and macroscale of the bulk of granular matter. The correlations among difference scales would be crucial. The mesoscale force chain network is determined by both particle properties and macroscopic boundary conditions. The evolution of the force the chain network contributes to macroscopic mechanical properties of granular matter. In addition, we discuss the drawbacks in simplifying contact forces in the current models, and the difficulties in analyzing the interaction of interstitial fluid in wet granular matter. As an appropriate application of granular matter, debris flow can be studied with granular matter mechanics; meanwhile, debris flow brings more challenges which certainly motivate future studies on granular matter. (C) 2008 National Natural Science Foundation of China and Chinese Academy of Sciences. Published by Elsevier Limited and Science in China Press. All rights reserved.
KeywordGranular Matter Multiscale Mechanics Force Chain Contact Mechanics Debris Flow
WOS HeadingsScience & Technology ; Technology
WOS Subject ExtendedMaterials Science ; Science & Technology - Other Topics
Indexed BySCI
WOS SubjectMaterials Science, Multidisciplinary ; Multidisciplinary Sciences
WOS IDWOS:000264659800001
Funding OrganizationNational Natural Science Foundation of China(40701014 ; National Basic Research Program of China(2007CB714100 ; 50679032) ; 2008CB425802)
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Cited Times:25[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.Tsinghua Univ, Dept Hydraul Engn, State Key Lab Hydrosci & Engn, Beijing 100084, Peoples R China
2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China
Recommended Citation
GB/T 7714
Sun, Qicheng,Wang, Guangqian,Hu, Kaiheng. Some open problems in granular matter mechanics[J]. PROGRESS IN NATURAL SCIENCE,2009,19(5):523-529.
APA Sun, Qicheng,Wang, Guangqian,&Hu, Kaiheng.(2009).Some open problems in granular matter mechanics.PROGRESS IN NATURAL SCIENCE,19(5),523-529.
MLA Sun, Qicheng,et al."Some open problems in granular matter mechanics".PROGRESS IN NATURAL SCIENCE 19.5(2009):523-529.
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