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DOI	10.1016/j.ijplas.2010.01.007
	Strength criterion and elastoplastic constitutive model of frozen silt in generalized plastic mechanics
	Lai Yuanming; Yang Yugui; Chang Xiaoxiao; Li Shuangyang
发表日期	2010
ISSN	0749-6419
EISSN	1879-2154
起始页码	1461
结束页码	1484
卷号	26 期号:10
英文摘要	Triaxial compressive tests of frozen silt were carried out under confining pressures from 0.0 to 14.0 MPa at the temperatures of -2, -4 and -6 degrees C. A strength criterion based upon experimental results is presented by the combination of extended Lade-Duncan strength function f(pi)(0) in pi-plane and f(p-q)(p) in p-q-plane. In order to describe the deformation characteristic of frozen silt, an elastoplastic constitutive model in generalized plastic mechanics has been proposed for the nonlinear behavior of frozen silt, such as the pressure melting and crushing phenomena, strain softening/hardening characteristics and dilatation, etc., by employing an elliptical yield surface, together with a non-associated flow rule for the compressive mechanism, and two parabolic yield surfaces, together with non-associated flow rules for the shear mechanism. The validity of the model is verified by comparing its modeling results with the results of triaxial compressive tests. It is found that the stress-strain curves predicted by this model agree well with the corresponding experimental results both under low and high confining pressures. (C) 2010 Elsevier Ltd. All rights reserved.
英文关键词	Strength criterion; Yield surface; Elastoplastic constitutive model; Frozen silt
语种	英语
WOS研究方向	Engineering ; Materials Science ; Mechanics
WOS类目	Engineering, Mechanical ; Materials Science, Multidisciplinary ; Mechanics
WOS关键词	RELAXED CONFIGURATIONS ; NONASSOCIATED FLOW ; FAILURE ; STRAIN ; YIELD ; DEFORMATIONS ; EQUATIONS ; BEHAVIOR ; SOILS ; ROCK
WOS记录号	WOS:000282902800004
来源期刊	INTERNATIONAL JOURNAL OF PLASTICITY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/239522
作者单位	[Lai Yuanming; Yang Yugui; Chang Xiaoxiao; Li Shuangyang] Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Lai Yuanming,Yang Yugui,Chang Xiaoxiao,et al. Strength criterion and elastoplastic constitutive model of frozen silt in generalized plastic mechanics[J],2010,26(10).
APA	Lai Yuanming,Yang Yugui,Chang Xiaoxiao,&Li Shuangyang.(2010).Strength criterion and elastoplastic constitutive model of frozen silt in generalized plastic mechanics.INTERNATIONAL JOURNAL OF PLASTICITY,26(10).
MLA	Lai Yuanming,et al."Strength criterion and elastoplastic constitutive model of frozen silt in generalized plastic mechanics".INTERNATIONAL JOURNAL OF PLASTICITY 26.10(2010).