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个人信息Personal Information
教授
博士生导师
硕士生导师
主要任职：大连理工大学白俄罗斯国立大学联合学院院长、直属党支部书记
其他任职：辽宁省极地海洋专业技术创新中心主任
性别：男
出生日期：1972-12-30
毕业院校：大连理工大学
学位：博士
所在单位：力学与航空航天学院
学科：计算力学. 固体力学. 工程力学. 船舶与海洋结构物设计制造. 岩土与环境力学
办公地点：大连理工大学主校区海宇楼(1号实验楼)607室
联系方式：0411-84708683
电子邮箱：jisy@dlut.edu.cn
Discrete element modeling of direct shear tests for a granular material
点击次数：
论文类型：期刊论文
发表时间：2010-06-25
发表刊物：INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS
收录刊物：SCIE、EI、Scopus
卷号：34
期号：9
页面范围：978-990
ISSN号：0363-9061
关键字：discrete element method; clumps; direct shear test
摘要：A succinct 3D discrete element model, with clumps to resemble the real shapes of granular materials, is developed. The quaternion method is introduced to transform the motion and force of a clump between local and global coordinates. The Hertz-Mindlin elastic contact force model, incorporated with the nonlinear normal viscous force and the Mohr-Coulomb friction law, is used to describe the interactions between particles. The proposed discrete element model is used to simulate direct shear tests of the irregular limestone rubbles. The simulation results of vertical displacements and shear stresses with a mixture of clumps are compared well with that of laboratory tests. The bulk friction coefficients are calculated and discussed under different contact friction coefficients and normal stresses. Copyright (C) 2009 John Wiley & Sons, Ltd.