Angle-Based Contact Detection in Discontinuous Deformation Analysis

doi:10.1007/s00603-020-02206-z

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > 山地灾害与地表过程重点实验室

	Angle-Based Contact Detection in Discontinuous Deformation Analysis
	Zhang, Hong 1; Zhang, Jing-wen 1; Wu, Wei 1,3,4; Wang, Xi 1; Zhu, Hehua 1,3,4; Lin, Jeen-shang 5; Chen, Jian-gang 2
刊名	ROCK MECHANICS AND ROCK ENGINEERING
	2020-08-25
页码	DOI: 10.1007/s00603-020-02206-z
关键词	Rock mass Concave polyhedron Discontinuous deformation analysis Contact detection Entrance angle method Local convex decomposition
ISSN号	0723-2632
DOI	10.1007/s00603-020-02206-z
通讯作者	Wu, Wei(weiwu@tongji.edu.cn) ; Wang, Xi(xiwang_chn@foxmail.com)
产权排序	2
文献子类	Article; Early Access
英文摘要	This study presents a novel angle-based contact detection method to address the concave contact problem of arbitrary polyhedra, including convex and concave polyhedra, those with cavities and/or holes, and likely their unions. First, the most important mathematical concept in this study, theangle, is introduced to represent a general polyhedron. Using angles, the topologies of the polyhedra can be far more complex and universal than those previously studied, allowing for the coplanarity of faces and collinearity of edges, and not limiting the polyhedra to simple homeomorphic to closed three-dimensional (3-D) spheres. Second, all the local entrances of two general angles, which are either vertex angle to half-space or crossing edge angle to edge angle entrances, are identified using the entrance formulas. Third, local convex decomposition (LCD) is proposed to decompose any arbitrarily concave angle into a set of convex subangles, making the method easy to implement and naturally compatible with detection of entrance angles. Fourth, the proposed entrance angle method (EAM) is implemented in 3-D discontinuous deformation analysis (DDA) to compute arbitrarily convex/concave contacts. Finally, the EAM-based 3-D DDA method is validated and then employed to investigate the discontinuous mechanical behaviors of complex polyhedral block systems. Overall, the extended 3-D DDA program is sufficiently developed to meet the analysis requirements of complex rock mass projects.
电子版国际标准刊号	1434-453X
资助项目	National Natural Science Foundation of China[51708420] ; Natural Science Foundation of Shanghai[17ZR1432300] ; Key Laboratory of Mountain Hazards and Surface Process, Chinese Academy of Sciences
WOS关键词	TO-EDGE CONTACT ; DISTINCT ELEMENT MODEL ; STABILITY ANALYSIS ; SEARCHING ALGORITHM ; FACE CONTACT ; BLOCK THEORY ; DDA ; SYSTEM ; FORMULATION ; VALIDATION
WOS研究方向	Engineering ; Geology
语种	英语
出版者	SPRINGER WIEN
WOS记录号	WOS:000562679600001
资助机构	National Natural Science Foundation of China ; Natural Science Foundation of Shanghai ; Key Laboratory of Mountain Hazards and Surface Process, Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/35484]
专题	成都山地灾害与环境研究所_山地灾害与地表过程重点实验室
通讯作者	Wu, Wei; Wang, Xi
作者单位	1.Tongji Univ, Coll Civil Engn, Shanghai 200092, Peoples R China; 2.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Peoples R China; 3.Tongji Univ, State Key Lab Disaster Reduct Civil Engn, Shanghai 200092, Peoples R China; 4.Tongji Univ, Key Lab Geotech & Underground Engn, Minist Educ, Shanghai 200092, Peoples R China; 5.Univ Pittsburgh, Dept Civil & Environm Engn, Pittsburgh, PA 15261 USA
推荐引用方式 GB/T 7714	Zhang, Hong,Zhang, Jing-wen,Wu, Wei,et al. Angle-Based Contact Detection in Discontinuous Deformation Analysis[J]. ROCK MECHANICS AND ROCK ENGINEERING,2020:DOI: 10.1007/s00603-020-02206-z.
APA	Zhang, Hong.,Zhang, Jing-wen.,Wu, Wei.,Wang, Xi.,Zhu, Hehua.,...&Chen, Jian-gang.(2020).Angle-Based Contact Detection in Discontinuous Deformation Analysis.ROCK MECHANICS AND ROCK ENGINEERING,DOI: 10.1007/s00603-020-02206-z.
MLA	Zhang, Hong,et al."Angle-Based Contact Detection in Discontinuous Deformation Analysis".ROCK MECHANICS AND ROCK ENGINEERING (2020):DOI: 10.1007/s00603-020-02206-z.