A new contact potential based three-dimensional discontinuous deformation analysis method

doi:10.1016/j.ijrmms.2019.104206

	A new contact potential based three-dimensional discontinuous deformation analysis method
	Xu, Dongdong 4; Wu, Aiqing 4; Yang, Yongtao 3; Lu, Bo 4; Liu, Feng 2; Zheng, Hong 1
刊名	INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
	2020-03-01
卷号	127 页码:23
关键词	Rock mechanics Three-dimensional discontinuous deformation analysis Contact potential Potential contact force FEM-DEM
ISSN号	1365-1609
DOI	10.1016/j.ijrmms.2019.104206
英文摘要	The three-dimensional discontinuous deformation analysis (3D-DDA) method was developed for the deformation simulation of rock block system cut by the natural discontinuities in rock mass engineering. In the conventional DDA, open-close iteration is used to deal with the contact constraints, which needs to apply or remove the normal or tangential springs repeatedly to meet the equilibrium equations at each time step. DDA provides a time step adjustment strategy to meet the fast convergence of open-close iterations, but when solving large-scale problems, the adjusted time step often reaches a very small order of magnitude, which makes the calculation time-consuming increase sharply. In the framework of the original 3D-DDA, a new contact potential based three-dimensional discontinuous deformation analysis method (3D-CPDDA) is developed. The proposed method not only retains the advantage of the original DDA method in defining local displacement functions on a single patch, but also integrates the simplicity and rapidity of potential based contact processing. The improved method is easier to be implemented in the parallel way, which can further improve the computational efficiency. Numerical examples have confirmed the correctness and feasibility of the proposed procedure.
资助项目	National Key R&D Program of China[2018YFC0407002] ; National Natural Science Foundation of China[51539002] ; National Natural Science Foundation of China[51879014] ; National Natural Science Foundation of China[11502033] ; National Natural Science Foundation of China[51579016] ; Research and Transfer Project of Changjiang River Scientific Research Institute[CKZS2017007/YT] ; Innovative Team Project of Changjiang River Scientific Research Institute[CKSF2017066/YT] ; Central Public-interest Scientific Institution Basal Research Fund[CKSF2016272/YT] ; Central Public-interest Scientific Institution Basal Research Fund[CKSF2015039/YT]
WOS研究方向	Engineering ; Mining & Mineral Processing
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000519534500008
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/23873]
专题	中科院武汉岩土力学所
通讯作者	Yang, Yongtao
作者单位	1.Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China 2.Tianjin Univ, Sch Civil Engn, State Key Lab Hydraul Engn Simulat & Safety, Tianjin 300072, Peoples R China 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 4.Minist Water Resources, Key Lab Geotech Mech & Engn, Changjiang River Sci Res Inst, Wuhan 430010, Peoples R China
推荐引用方式 GB/T 7714	Xu, Dongdong,Wu, Aiqing,Yang, Yongtao,et al. A new contact potential based three-dimensional discontinuous deformation analysis method[J]. INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES,2020,127:23.
APA	Xu, Dongdong,Wu, Aiqing,Yang, Yongtao,Lu, Bo,Liu, Feng,&Zheng, Hong.(2020).A new contact potential based three-dimensional discontinuous deformation analysis method.INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES,127,23.
MLA	Xu, Dongdong,et al."A new contact potential based three-dimensional discontinuous deformation analysis method".INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES 127(2020):23.