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A semi-spring and semi-edge combined contact model in CDEM and its application to analysis of Jiweishan landslide

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文摘 Continuum-based discrete element method (CDEM) is an explicit numerical method used for simulation of progressive failure of geological body. To improve the efficiency of contact detection and simplify the calculation steps for contact forces, semi-spring and semi-edge are introduced in calculation. Semispring is derived from block vertex, and formed by indenting the block vertex into each face (24 semisprings for a hexahedral element). The formation process of semi-edge is the same as that of semi-spring (24 semi-edges for a hexahedral element). Based on the semi-springs and semi-edges, a new type of combined contact model is presented. According to this model, six contact types could be reduced to two, i.e. the semi-spring target face contact and semi-edge target edge contact. By the combined model, the contact force could be calculated directly (the information of contact type is not necessary), and the failure judgment could be executed in a straightforward way (each semi-spring and semi-edge own their characteristic areas). The algorithm has been successfully programmed in C++ program. Some simple numerical cases are presented to show the validity and accuracy of this model. Finally, the failure mode, sliding distance and critical friction angle of Jiweishan landslide are studied with the combined model.
来源 Journal of Rock Mechanics and Geotechnical Engineering ,2014,6(1):26-35 【核心库】
DOI 10.1016/j.jrmge.2013.12.001
关键词 Continuum-based discrete element method (CDEM) ; Contact detection method ; Semi-spring ; Semi-edge ; Landslide
地址

Institute of Mechanics, Chinese Academy of Sciences, Beijing, 100190

语种 英文
文献类型 研究性论文
ISSN 1674-7755
学科 地质学;矿业工程
基金 the supports from the National Basic Research Program of the Ministry of Science and Technology of China ;  the National Key Technology Research and Development Program of the Ministry of Science and Technology of China ;  the Youth Science Fund of National Natural Science Foundation of China
文献收藏号 CSCD:5067031

参考文献 共 18 共1页

1.  Beyabanaki S A R. Three-dimensional discontinuous deformation analysis (3D DDA) using a new contact resolution algorithm. Computers and Geotechnics,2008,35(3):346-356 被引 12    
2.  Cheng Y M. New approach to determine three-dimensional contacts in blocks system: penetration edges method. International Journal of Geomechanics,2006,6(5):303-310 被引 1    
3.  Cundall P A. Formulation of a three-dimensional distinct element model-part I. A scheme to detect and represent contacts in a system composed of many polyhedral blocks. International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts,1988,25(3):107-116 被引 166    
4.  Hart R. Formulation of a three-dimensional distinct element method model-part II: mechanical calculations for motion and interaction of a system composed many polyhedral blocks. International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts,1988,25(3):117-125 被引 166    
5.  Itasca Consulting Group Inc. 3DEC-3D distinct element code,1987 被引 2    
6.  Jing L R. Fundamentals of discrete element methods for rock engineering theory and applications,2007 被引 2    
7.  Keneti A R. A new algorithm to identify contact patterns between convex blocks for three-dimensional discontinuous deformation analysis. Computers and Geotechnics,2008,35(5):746-759 被引 7    
8.  Li S H. A new numerical method for DEM-block and particle model. International Journal of Rock Mechanics and Mining Sciences,2004,41(3):436 被引 25    
9.  Li S H. Effect of rock mass structure and block size on the slope stability-physical modeling and discrete element simulation. Science in China Series E (Engineering and Materials Science),2005,48(Supp):1-17 被引 4    
10.  Li S H. Analysis of critical excavation depth for a jointed rock slope by face-to-face discrete element method. Rock Mechanics and Rock Engineering,2007,40(4):331-348 被引 19    
11.  Liu J. Formulations of the three-dimensional discontinuous deformation analysis method. Acta Mechanica Sinica,2004,20(3):270-282 被引 5    
12.  Ma Z S. A GPU accelerated continuous-based discrete element method for elastodynamics analysis. Advanced Materials Research,2011,320:329-334 被引 6    
13.  Nezami E G. A fast contact detection algorithm for 3D discrete element method. Computers and Geotechnics,2004,31(7):575-587 被引 24    
14.  Wang J Q. Static and dynamic stability analysis using 3D-DDA with incision body scheme. Earthquake Engineering and Engineering Vibration,2006,5(2):273-283 被引 3    
15.  Wang Y N. Stochastic structural model of rock and soil aggregates by continuum-based discrete element method. Science in China Series E (Engineering and Materials Science),2005,48(Supp. 1):95-106 被引 13    
16.  Wu J H. Vertex-to-face contact searching algorithm for threedimensional frictionless contact problems. International Journal for Numerical Methods in Engineering,2005,63(6):876-897 被引 3    
17.  Wu J H. New edge-to-edge contact calculating algorithm in three-dimensional discrete numerical analysis. Advances in Engineering Software,2008,39(1):15-24 被引 5    
18.  Yeung M R. A model of edge-to-edge contact for threedimensional discontinuous deformation analysis. Computers and Geotechnics,2007,34(3):175-186 被引 13    
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