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Angle-Based Contact Detection in Discontinuous Deformation Analysis

文献类型：期刊论文

作者Zhang, Hong5; Zhang, Jing-wen5; Wu, Wei3,4,5; Wang, Xi5; Zhu, Hehua3,4,5; Lin, Jeen-shang2; Chen, Jian-gang1
刊名ROCK MECHANICS AND ROCK ENGINEERING
出版日期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
DOI10.1007/s00603-020-02206-z
产权排序2
通讯作者Wu, Wei(weiwu@tongji.edu.cn) ; Wang, Xi(xiwang_chn@foxmail.com)
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
WOS关键词TO-EDGE CONTACT ; DISTINCT ELEMENT MODEL ; STABILITY ANALYSIS ; SEARCHING ALGORITHM ; FACE CONTACT ; BLOCK THEORY ; DDA ; SYSTEM ; FORMULATION ; VALIDATION
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研究方向Engineering ; Geology
语种英语
WOS记录号WOS:000562679600001
出版者SPRINGER WIEN
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
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.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Peoples R China;
2.Univ Pittsburgh, Dept Civil & Environm Engn, Pittsburgh, PA 15261 USA
3.Tongji Univ, Key Lab Geotech & Underground Engn, Minist Educ, Shanghai 200092, Peoples R China;
4.Tongji Univ, State Key Lab Disaster Reduct Civil Engn, Shanghai 200092, Peoples R China;
5.Tongji Univ, Coll Civil Engn, Shanghai 200092, Peoples R China;
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.

入库方式： OAI收割

来源：成都山地灾害与环境研究所

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