半弹簧接触模型及其在边坡破坏计算中的应用
SEMI-SPRING CONTACT MODEL AND ITS APPLICATION TO FAILURE SIMULATION OF SLOPE
查看参考文献20篇
文摘
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提出了一种用于判断、描述三维离散块体的接触状态,计算块体间接触力的半弹簧接触模型.该模型将一对接触块体分为母块体及子块体,半弹簧位于母块体上,由母块体各节点缩进至各母面面内形成,目标面位于子块体上.该模型根据半弹簧与目标面的几何关系直接计算接触力,无需耗费大量时间判断两个块体的接触类型及计算两个块体的接触面积.该模型可以解决准三维条件下地质体渐进破坏的计算,将该模型应用于边坡渐进破坏分析,计算结果与实际情况相符 |
其他语种文摘
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The main purpose of semi-spring contact model is to judge and describe the contact status,and then to calculate the contact force between blocks.Contact blocks are divided into mother block and son block. Semi-spring is located in mother block,and formed by indenting the vertex of block to mother face,while target face lies in the son block.According to the geometry relationship between semi-spring and target face,the contact force could be obtained directly.There is no need to waste a mount of time to judge the contact type and calculate contact area between two blocks.The model could calculate the progressive failure of geological body under the conditions of quasi-three-dimension,and some numerical cases about slope failure are shown to proof its accuracy and reliability |
来源
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力学学报
,2011,43(1):184-192 【核心库】
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关键词
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块体离散元
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CDEM
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接触探测
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半弹簧
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边坡
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地址
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中国科学院力学研究所, 中国科学院环境力学重点实验室, 北京, 100190
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语种
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中文 |
文献类型
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研究性论文 |
ISSN
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0459-1879 |
学科
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力学 |
基金
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国家973计划
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国家自然科学基金重点项目
;
中国科学院知识创新工程重要方向项目
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文献收藏号
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CSCD:4126892
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参考文献 共
20
共1页
|
1.
Li SH. Continuum-based discrete element method and its applications.
DEM'08, Beijing,2008:147-170
|
被引
1
次
|
|
|
|
2.
Li SH. A continuum-based discrete element method for continuous deformation and failure process.
WCCM VI in Conjunction with AP-COM'04, Beijing,2004:77
|
被引
1
次
|
|
|
|
3.
Wang YN. Stochastic structural model of rock and soil aggregates by continummbased discrete element method.
Science in China. Series E (in English),2005,48(Suppl):95-106
|
被引
13
次
|
|
|
|
4.
Li SH. A new numerical method for DEM-block and particle model.
International Journal of Rock Mechanics and Mining-Sciences,2004,41(s1):436-436
|
被引
1
次
|
|
|
|
5.
李世海. 三维离散元计算参数选取方法研究.
岩石力学与工程学报,2004,23(21):3642-3651
|
被引
21
次
|
|
|
|
6.
Lanru J.
Fundamentals of discrete element methods for rock engineering theory and applications,2007
|
被引
2
次
|
|
|
|
7.
Wu JH. Vertex-to-face contact searching algorithm for three-dimensional frictionless contact problems.
Int J Numer Methods Eng,2005,63(6):876-897
|
被引
1
次
|
|
|
|
8.
Yeung MR. A model of edge-to-edge contact for three-dimensional discontinuous deformation analysis.
Comput Geotech,2007,34(3):175-186
|
被引
13
次
|
|
|
|
9.
Wu JH. New edge-to-edge contact calculating algorithm in three dimensional discrete numerical analysis.
Adv Eng Software,2008,39(1):15-24
|
被引
1
次
|
|
|
|
10.
Jiang QH. A model of point-to-face contact for three-dimensional discontinuous deformation analysis.
Rock Mechanics and Rock Engineering,2004,37(2):95-116
|
被引
13
次
|
|
|
|
11.
Beyabanak SAR. Threedimensional discontinuous deformation analysis (3-D DDA) using a new contact resolution algorithm.
Computers and Geotechnics,2008,35:346-356
|
被引
1
次
|
|
|
|
12.
Cundall PA. 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.
Int J Rock Mech Min Sci & Geomech Abstr,1988,25(3):107-116
|
被引
166
次
|
|
|
|
13.
Itasca Consulting Group Inc.
3DEC-3D distinct element code,1987
|
被引
2
次
|
|
|
|
14.
王泳嘉. 在维离散单元法软化系统TRUDEC的研制.
岩石力学与工程学报,1996,15(3):201-210
|
被引
11
次
|
|
|
|
15.
Liu J. Formulations of the three-dimensional discontinuous deformation analysis method.
Acta Mech Sinica,2004,20(3):270-282
|
被引
5
次
|
|
|
|
16.
罗海宁. 对三维离散单元法中块体接触判断算法的改进.
岩土力学,1999,20(2):37-40
|
被引
8
次
|
|
|
|
17.
陈文胜. 岩石块体三维接触判断的侵入边法.
岩石力学与工程学报,2004,23(4):565-571
|
被引
12
次
|
|
|
|
18.
王建全. 三维块体接触判断方法的分析与改进.
岩石力学与工程学报,2006,25(11):2247-2257
|
被引
4
次
|
|
|
|
19.
Hart R. Formulation of a threedimensional 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,1988,25(3):117-125
|
被引
166
次
|
|
|
|
20.
Li SH. 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
1
次
|
|
|
|
|