Implicit scheme for integrating constitutive model of unsaturated soils with coupling hydraulic and mechanical behavior

doi:10.1007/s10483-014-1859-6

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

	Implicit scheme for integrating constitutive model of unsaturated soils with coupling hydraulic and mechanical behavior
	Ma, Tian-tian 1; Wei, Chang-fu 1,2; Chen, Pan 1; Wei, Hou-zhen 1
刊名	APPLIED MATHEMATICS AND MECHANICS-ENGLISH EDITION
	2014
卷号	35 期号:9 页码:1129-1154
关键词	unsaturated soil capillary hysteresis elastoplastic coupling constitutive model stress integration finite-element method
ISSN号	0253-4827
DOI	10.1007/s10483-014-1859-6
英文摘要	A constitutive model of unsaturated soils with coupling capillary hysteresis and skeleton deformation is developed and implemented in a fully coupled transient hydro-mechanical finite-element model (computer code U-DYSAC2). The obtained results are compared with experimental results, showing that the proposed constitutive model can simulate the main mechanical and hydraulic behavior of unsaturated soils in a unified framework. The non-linearity of the soil-water characteristic relation is treated in a similar way of elastoplasticity. Two constitutive relations are integrated by an implicit return-mapping scheme similar to that developed for saturated soils. A consistent tangential modulus is derived to preserve the asymptotic rate of the quadratic convergence of Newton's iteration. Combined with the integration of the constitutive model, a complete finite-element formulation of coupling hydro-mechanical problems for unsaturated soils is presented. A number of practical problems with different given initial and boundary conditions are analyzed to illustrate the performance and capabilities of the finite-element model.
WOS研究方向	Mathematics ; Mechanics
语种	英语
出版者	SHANGHAI UNIV
WOS记录号	WOS:000341708100004
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/3626]
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, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn ; 2.Guilin Univ Technol, Coll Civil & Architectural Engn
推荐引用方式 GB/T 7714	Ma, Tian-tian,Wei, Chang-fu,Chen, Pan,et al. Implicit scheme for integrating constitutive model of unsaturated soils with coupling hydraulic and mechanical behavior[J]. APPLIED MATHEMATICS AND MECHANICS-ENGLISH EDITION,2014,35(9):1129-1154.
APA	Ma, Tian-tian,Wei, Chang-fu,Chen, Pan,&Wei, Hou-zhen.(2014).Implicit scheme for integrating constitutive model of unsaturated soils with coupling hydraulic and mechanical behavior.APPLIED MATHEMATICS AND MECHANICS-ENGLISH EDITION,35(9),1129-1154.
MLA	Ma, Tian-tian,et al."Implicit scheme for integrating constitutive model of unsaturated soils with coupling hydraulic and mechanical behavior".APPLIED MATHEMATICS AND MECHANICS-ENGLISH EDITION 35.9(2014):1129-1154.