Hydro-mechanical simulation of the saturated and semi-saturated porous soil-rock mixtures using the numerical manifold method

doi:10.1016/j.cma.2020.113238

	Hydro-mechanical simulation of the saturated and semi-saturated porous soil-rock mixtures using the numerical manifold method
	Wu, Wenan 1,2; Yang, Yongtao 2; Zheng, Hong 3
刊名	COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
	2020-10-01
卷号	370 页码:47
关键词	Soil-rock mixture Semi-saturated porous media Two-phase fluid flow Fractured porous media Numerical manifold method
ISSN号	0045-7825
DOI	10.1016/j.cma.2020.113238
英文摘要	Dynamics of the widespread saturated and semi-saturated soil-rock mixtures (SRMs) are of importance in practical engineering. In this paper, a numerical manifold model is presented for hydro-mechanical simulation of the saturated and semi-saturated SRMs. In the case of the semi-saturated SRMs, the model is based on the generalized Biot theory involving immiscible two-phase wetting and non-wetting fluids in deformable porous media. The wetting, non-wetting fluid pressure and skeleton displacement are chosen to be primary variables which are related to the wetting and non-wetting saturation and permeability by experimental relationships. For the mechanical problem, the material interfaces between soil and rock are deemed discontinuous by imposing a stick-slip contact constraint using an augmented Lagrange multiplier approach. For the hydraulic problem, the material interfaces are continuous for the fluid pressure and flux fields. Within the framework of the numerical manifold method (NMM), the discretized model including the interfacial discontinuities always can be established using the triangular mesh and the lumped mass representation is always available to increase computational efficiency. Besides the benchmark problems of saturated and semi-saturated porous media, two examples of soil-rock foundation and slope are performed to demonstrate the versatility and robustness of the model and to investigate the hydro-mechanical responses of the porous SRMs. (C) 2020 Elsevier B.V. All rights reserved.
资助项目	Youth Innovation Promotion Association CAS, China[2020327] ; National Natural Science Foundation of China[51609240] ; National Natural Science Foundation of China[11572009] ; National Natural Science Foundation of China[51538001]
WOS研究方向	Engineering ; Mathematics ; Mechanics
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000569361300004
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/24803]
专题	中科院武汉岩土力学所
通讯作者	Yang, Yongtao
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 3.Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China
推荐引用方式 GB/T 7714	Wu, Wenan,Yang, Yongtao,Zheng, Hong. Hydro-mechanical simulation of the saturated and semi-saturated porous soil-rock mixtures using the numerical manifold method[J]. COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING,2020,370:47.
APA	Wu, Wenan,Yang, Yongtao,&Zheng, Hong.(2020).Hydro-mechanical simulation of the saturated and semi-saturated porous soil-rock mixtures using the numerical manifold method.COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING,370,47.
MLA	Wu, Wenan,et al."Hydro-mechanical simulation of the saturated and semi-saturated porous soil-rock mixtures using the numerical manifold method".COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING 370(2020):47.