Three-dimensional numerical manifold formulation with continuous nodal gradients for dynamics of elasto-plastic porous media

doi:10.1016/j.cma.2021.114203

	Three-dimensional numerical manifold formulation with continuous nodal gradients for dynamics of elasto-plastic porous media
	Wu, Wenan 2; Wan, Tao 2; Yang, Yongtao 1; Zheng, Hong 2
刊名	COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
	2022
卷号	388 页码:43
关键词	Dynamic elasto-plastic consolidation Numerical manifold method Locking Hysteresis
ISSN号	0045-7825
DOI	10.1016/j.cma.2021.114203
英文摘要	A three-dimensional (3D) numerical manifold formulation with continuous nodal gradients (H8-CNS) is presented for dynamic analysis of saturated elasto-plastic porous media based on the three-variable (u - w - p) formulation. Using meshes of 8-node hexahedra as mathematical patches, the skeleton displacement (u) and fluid velocity (w) interpolations are constructed with a constrained and ortho-normalized least-squares (CO-LS) scheme and a piecewise constant interpolation for fluid pressure field is employed. One feature of H8-CNS is to overcome locking in both limiting cases of low permeability and rigid skeleton. Another feature of H8-CNS is to achieve higher accuracy in stress results for porous media problems involving both elastic and elasto-plastic skeleton behaviors. H8-CNS is also able to fully capture dynamic responses of porous media under high-frequency loading. The accuracy and stability of H8-CNS are verified by performing a variety of numerical simulations. Time integration of H8-CNS is shown to be stable and accurate using the energy balance condition. (C) 2021 Elsevier B.V. All rights reserved.
资助项目	Youth Innovation Promotion Association CAS, China[2020327] ; National Natural Science Foundation of China[12072357] ; National Natural Science Foundation of China[5213000723]
WOS研究方向	Engineering ; Mathematics ; Mechanics
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000720463900011
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/28296]
专题	中科院武汉岩土力学所
通讯作者	Yang, Yongtao
作者单位	1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 2.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,Wan, Tao,Yang, Yongtao,et al. Three-dimensional numerical manifold formulation with continuous nodal gradients for dynamics of elasto-plastic porous media[J]. COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING,2022,388:43.
APA	Wu, Wenan,Wan, Tao,Yang, Yongtao,&Zheng, Hong.(2022).Three-dimensional numerical manifold formulation with continuous nodal gradients for dynamics of elasto-plastic porous media.COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING,388,43.
MLA	Wu, Wenan,et al."Three-dimensional numerical manifold formulation with continuous nodal gradients for dynamics of elasto-plastic porous media".COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING 388(2022):43.