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Title: Detection of 3D rock block contacts by penetration edges
Other Titles: 岩石块体三维接触判断的侵入边法
Authors: Cheng, YM 
Chen, WS
Guo, XR
Keywords: Rock mechanics
Numerical method 3D blocks
Contact detection
Penetration edge (PE)
Discrete element method
Discontinuous deformation analysis
Issue Date: 2004
Publisher: 岩石力學與工程學報編輯部
Source: 岩石力学与工程学报 (Chinese journal of rock mechanics and engineering), Feb. 2004, v. 23, no. 4, p. 565-571 How to cite?
Journal: 岩石力学与工程学报 (Chinese journal of rock mechanics and engineering) 
Abstract: 在三维单元法、三维不连续变形分析法中,三维块体的接触判断是关键的问题之一。对三维凸多面体的所有接触形式进行了分类,提出了一种三维块体接触判断的侵入边法。给出了侵入边法的原理、方法实施步骤及识别接触形式的方法。通过论证和算例表明,所提出的方法计算工作量小、鲁棒性好,容易于计算机实现。
Detection of contacts between 3D blocks is a key problem in 3D DDA(discontinuous deformation analysis)and DEM (discrete element method) analysis. In this paper,the limitations of the approaches commonly used to detect 3D block contacts are discussed. A new approach called penetration edges method is put forward for the detection of contacts in 3D blocks system,and the contacts between two 3D blocks are classified into seven types. The principle of this new approach is robust and can overcome the limitations of the commonly used methods. This new method can greatly reduce the amount of calculation and is easy to be coded for analysis.
ISSN: 1000-6915
Rights: © 2004 中国学术期刊电子杂志出版社。本内容的使用仅限于教育、科研之目的。
© 2004 China Academic Journal Electronic Publishing House. It is to be used strictly for educational and research purposes.
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