IMECH-IR  > 流固耦合系统力学重点实验室
On the degradation of granular materials due to internal erosion
Wang XL(王晓亮); Li JC(李家春); Li, JC (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, 15 Beisihuanxi Rd, Beijing 100190, Peoples R China.
Source PublicationActa Mechanica Sinica
2015-10
Volume31Issue:5Pages:685-697
ISSN0567-7718
AbstractA new state-based elasto-plastic constitutive relationship along with the discrete element model is established to estimate the degradation of granular materials due to internal erosion. Four essential effects of internal erosion such as the force network damage and relaxation are proposed and then incorporated into the constitutive relationship to formulate internal erosion impacts on the mechanical behavior of granular materials. Most manifestations in the degradation of granular materials, such as reduction of peak strength and dilatancy are predicted by themodified constitutive relationship in good agreement with the discrete element method (DEM) simulation. In particular, the sudden reduction of stress for conspicuous mass erosion in a high stress state is captured by force network damage and the relaxation mechanism. It is concluded that the newmodified constitutive relationship is a potential theory to describe the degradation of granular materials due to internal erosion and would be very useful, for instance, in the prediction and assessment of piping disaster risk during the flood season.
KeywordInternal Erosion Degradation Granular Materials Discrete Element Method
Subject Area应用力学 ; 水利工程基础学科 ; 防洪
DOI10.1007/s10409-015-0466-x
URL查看原文
Indexed BySCI ; CSCD
Language英语
WOS IDWOS:000364450700010
WOS KeywordCONSTITUTIVE MODEL ; PARTICLE REMOVAL ; PLASTICITY MODEL ; SAND PRODUCTION ; SOILS ; DILATANCY ; APPARATUS ; MEDIA ; FLOW ; DEM
WOS Research AreaEngineering ; Mechanics
WOS SubjectEngineering, Mechanical ; Mechanics
Funding OrganizationThe authors appreciate the financial support by National Natural Science Foundation of China (Grants 11432015 and 10932012). The authors would like to thank Dr. Fu, Dr. Zhang, and Mr. Peng for helpful discussion on the mechanism of piping and its modeling.
DepartmentLMFS水环境流体力学(LEM)
Classification二类
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/58324
Collection流固耦合系统力学重点实验室
Corresponding AuthorLi, JC (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, 15 Beisihuanxi Rd, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Wang XL,Li JC,Li, JC . On the degradation of granular materials due to internal erosion[J]. Acta Mechanica Sinica,2015,31(5):685-697.
APA 王晓亮,李家春,&Li, JC .(2015).On the degradation of granular materials due to internal erosion.Acta Mechanica Sinica,31(5),685-697.
MLA 王晓亮,et al."On the degradation of granular materials due to internal erosion".Acta Mechanica Sinica 31.5(2015):685-697.
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