An elastoplatic framework for coupling hydraulic and mechanical behavior of unsaturated soils

doi:10.1016/j.ijplas.2008.04.001

CORC > 武汉岩土力学研究所 > 中科院武汉岩土力学所 > 岩土力学所知识全产出 > 期刊论文

	An elastoplatic framework for coupling hydraulic and mechanical behavior of unsaturated soils
	Muraleetharan, Kanthasamy K.2; Liu, Chunyang 2; Wei, Changfu 1; Chen, Lixia 2; Kibbey, Tohren C. G.2
刊名	INTERNATIONAL JOURNAL OF PLASTICITY
	2009
卷号	25 期号:3 页码:473-490
关键词	Strengthening mechanisms Constitutive behavior Cyclic loading Elastic-plastic material Porous material
ISSN号	0749-6419
DOI	10.1016/j.ijplas.2008.04.001
英文摘要	Combining theory of mixture with interfaces (TMI) and the continuum theory of plasticity, a theoretical framework for modeling the elastoplastic constitutive behavior of unsaturated soils is presented. We show that capillary hysteresis, i.e., soil water characteristic curves (SWCCs), is associated with a dissipation mechanism due to the irrecoverable change in volume fraction of water. Within this context, plastic deformation and capillary hysteresis can be consistently simulated in a hierarchical way. Plastic deformation is described by using an intergranular stress tensor that does not require any empirical coefficients and the capillary hysteresis is simulated within the framework of cyclic plasticity. This framework preserves all the advantages of unsaturated soil models based on the effective stress, two stress state variables, and the theory of mixtures. As a first step in developing a comprehensive constitutive model within this framework, a detailed model to simulate SWCCs is presented and compared with experimental data and a good comparison is obtained. A brief description of a novel experimental setup used to rapidly measure the SWCCs is also presented. Finally an isotropic coupled hydraulic-mechanical model is presented and the coupling effects between plastic deformation and capillary hysteresis are investigated. (C) 2008 Elsevier Ltd. All rights reserved.
WOS研究方向	Engineering ; Materials Science ; Mechanics
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000264260700005
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/3200]
专题	岩土力学所知识全产出_期刊论文国家重点实验室知识产出_期刊论文
作者单位	1.Chinese Acad Sci, State Key Lab Geomech & Geotech Engn, Inst Rock & Soil Mech 2.Univ Oklahoma, Sch Civil Engn & Environm Sci;
推荐引用方式 GB/T 7714	Muraleetharan, Kanthasamy K.,Liu, Chunyang,Wei, Changfu,et al. An elastoplatic framework for coupling hydraulic and mechanical behavior of unsaturated soils[J]. INTERNATIONAL JOURNAL OF PLASTICITY,2009,25(3):473-490.
APA	Muraleetharan, Kanthasamy K.,Liu, Chunyang,Wei, Changfu,Chen, Lixia,&Kibbey, Tohren C. G..(2009).An elastoplatic framework for coupling hydraulic and mechanical behavior of unsaturated soils.INTERNATIONAL JOURNAL OF PLASTICITY,25(3),473-490.
MLA	Muraleetharan, Kanthasamy K.,et al."An elastoplatic framework for coupling hydraulic and mechanical behavior of unsaturated soils".INTERNATIONAL JOURNAL OF PLASTICITY 25.3(2009):473-490.