Object-Oriented Contact Detection Approach for Three-Dimensional Discontinuous Deformation Analysis Based on Entrance Block Theory

doi:10.1061/(ASCE)GM.1943-5622.0000718

CORC > 武汉岩土力学研究所 > 中科院武汉岩土力学所 > 岩土力学所知识全产出 > 期刊论文

	Object-Oriented Contact Detection Approach for Three-Dimensional Discontinuous Deformation Analysis Based on Entrance Block Theory
	Wang, Long 1; Zheng, Fei 1,2; Jiao, Yu-Yong 1; Zhang, Xiu-Li 1; Tan, Fei 1; Zhao, Qiang 1
刊名	INTERNATIONAL JOURNAL OF GEOMECHANICS
	2017
卷号	17 期号:5 页码:-
关键词	Contact detection Three-dimensional discontinuous deformation analysis Object-oriented method Entrance block theory Contact cover First entrance Shortest exit
ISSN号	1532-3641
DOI	10.1061/(ASCE)GM.1943-5622.0000718
英文摘要	Compared with two-dimensional (2D) contact cases, three-dimensional (3D) contact problems are more complicated in both contact geometry representation and contact detection. The entrance block theory proposed by Shi lays the foundation for solving contact problems in a uniform format. This paper presents a new contact detection approach for 3D polyhedral blocks with the use of entrance block theory. In this approach, contacts between 3D polyhedra were classified into three categories: finite-contact covers (face to face, edge to face, and parallel edge to edge), single-contact covers (vertex to face, crossing edge to edge, vertex to edge, and vertex to vertex), and basic-contact covers (vertex to face and crossing edge to edge). A finite-contact cover consists of several single-contact covers, and all single-contact covers can be identified as basic-contact covers. Thus, the contact detection process can be fulfilled in three phases: a rough search phase to form a potential contacting block list for all blocks, a delicate search phase to detect the four single-contact covers, and an identification phase to identify basic-contact covers from all single-contact covers. Because contacts happen on boundaries of blocks, which can be regarded as a union of boundaries of 3D block angles, the delicate search can be fulfilled through detection between boundaries of 3D block angles to increase its efficiency. After contact detection, a list of potential contact pairs based on the three contact categories was formed and solved based on two basic-contact covers (i.e., vertex-to-face and crossing edge-to-edge contact covers). The half-edge data structure was applied to represent angles, edges, and polygons in polyhedra. The contact detection algorithm was fulfilled in the framework of 3D discontinuous deformation analysis (DDA), using the object-oriented programming method. In this paper, examples are provided to verify the accuracy of the proposed algorithm in treating vertex-to-vertex, vertex-to-edge, parallel edge-to-edge, edge-to-face, and face-to-face contact types as well as its robustness in solving contacts of a large number of blocks. (C) 2016 American Society of Civil Engineers.
WOS研究方向	Engineering
语种	英语
出版者	ASCE-AMER SOC CIVIL ENGINEERS
WOS记录号	WOS:000398536900014
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/4050]
专题	岩土力学所知识全产出_期刊论文国家重点实验室知识产出_期刊论文
作者单位	1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn ; 2.Univ Calif Berkeley, Dept Civil & Environm Engn
推荐引用方式 GB/T 7714	Wang, Long,Zheng, Fei,Jiao, Yu-Yong,et al. Object-Oriented Contact Detection Approach for Three-Dimensional Discontinuous Deformation Analysis Based on Entrance Block Theory[J]. INTERNATIONAL JOURNAL OF GEOMECHANICS,2017,17(5):-.
APA	Wang, Long,Zheng, Fei,Jiao, Yu-Yong,Zhang, Xiu-Li,Tan, Fei,&Zhao, Qiang.(2017).Object-Oriented Contact Detection Approach for Three-Dimensional Discontinuous Deformation Analysis Based on Entrance Block Theory.INTERNATIONAL JOURNAL OF GEOMECHANICS,17(5),-.
MLA	Wang, Long,et al."Object-Oriented Contact Detection Approach for Three-Dimensional Discontinuous Deformation Analysis Based on Entrance Block Theory".INTERNATIONAL JOURNAL OF GEOMECHANICS 17.5(2017):-.