On the degradation of granular materials due to internal erosion

doi:10.1007/s10409-015-0466-x

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.
发表期刊	Acta Mechanica Sinica
	2015-10
卷号	31 期号:5 页码:685-697
ISSN	0567-7718
摘要	A 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.
关键词	Internal Erosion Degradation Granular Materials Discrete Element Method
学科领域	应用力学 ; 水利工程基础学科 ; 防洪
DOI	10.1007/s10409-015-0466-x
URL	查看原文
收录类别	SCI ; CSCD
语种	英语
WOS记录号	WOS:000364450700010
关键词[WOS]	CONSTITUTIVE MODEL ; PARTICLE REMOVAL ; PLASTICITY MODEL ; SAND PRODUCTION ; SOILS ; DILATANCY ; APPARATUS ; MEDIA ; FLOW ; DEM
WOS研究方向	Engineering ; Mechanics
WOS类目	Engineering, Mechanical ; Mechanics
项目资助者	The 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.
课题组名称	LMFS水环境流体力学(LEM)
论文分区	二类
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/58324
专题	流固耦合系统力学重点实验室
通讯作者	Li, JC (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, 15 Beisihuanxi Rd, Beijing 100190, Peoples R China.
推荐引用方式 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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