岩土力学2017，Vol.38Issue(3)：883-892,10.DOI:10.16285/j.rsm.2017.03.034
一种模拟堆石料的二维多边形离散单元法及程序
A 2-D polygon discrete element method and program for simulating rockfill materials
罗滔 1OOI E T 2CHAN A H C 2傅少君3
作者信息
- 1. 武汉大学土木建筑工程学院,湖北武汉430072
- 2. 澳大利亚联邦大学工程与计算机信息学院,澳大利亚巴拉腊特3350
- 3. 塔斯马尼亚大学工程、信息与计算机技术学院,澳大利亚霍巴特7000
- 折叠
摘要
Abstract
Every single particle is simulated by a polygon discrete element to capture the realistic shape of rockfill materials.A polygon discrete element method (PDEM) is developed by adopting a simple contact detection program and a polygon/polygon contact model.A linear program is adopted to detect the contact details between polygons.Then the normal contact force is calculated by a potential energy based polygon/polygon normal contact model,and a polygon discrete element calculation method is formed.Based on this method,a program called PDEM is developed to study the interaction between particles and both the translational and rotational motion of every particle from the microscopic view.The effect of micro-properties (e.g.particle shape,size,material properties et al.) on the macro-strength and deformation is enabled.A two-dimensional model test of a coarse aggregate was carried out by PDEM program.The stress and deformation laws consistent with the lab experiment were obtained,and the method and procedure were used to study the effectiveness of the rockfill.关键词
堆石料/离散单元法/接触检索/接触模型/PDEM/双轴试验Key words
rockfill materials/discrete element method/contact detection/contact model/PDEM/biaxial test分类
数理科学引用本文复制引用
罗滔,OOI E T,CHAN A H C,傅少君..一种模拟堆石料的二维多边形离散单元法及程序[J].岩土力学,2017,38(3):883-892,10.
