中南大学学报（自然科学版）Issue(1)：166-175,10.DOI:10.11817/j.issn.1672-7207.2016.01.024
最小粒径截距对颗粒体数值模拟的影响
Effect of minimum particle size on assembly in numerical simulation
摘要
Abstract
The effect of the minimum size of particles on the strength properties and deformation characteristics of particles and the accuracy of simulations were simulated by the particle flow code in two dimensions (PFC2D). Three specimens with different minimum size of particles were analyzed, and two different compactness control standards were considered. The results show that the mechanical parameters are monotone function about the minimum particle size, and that the anti-distortion capacity of assemblies with different minimum particle sizes can be calculated through the function. On the other hand, linearly increasing relationship was found between coordination number and logarithmic minimum particle size, the impact of minimum particle size on density and strength properties was explained from the micro level. Finally, the influence of the minimum particle size on the results of the simulation were reduced by using relative density control standard and low confining stress.关键词
颗粒体/双轴试验/离散元/最小粒径/压实度控制标准Key words
assembly/biaxial compression test/discrete element/minimum particle size/compactness control standard分类
建筑与水利引用本文复制引用
马幸,周伟,马刚,常晓林..最小粒径截距对颗粒体数值模拟的影响[J].中南大学学报（自然科学版）,2016,(1):166-175,10.基金项目
国家自然科学基金资助项目(51379161)；国家优秀青年科学基金资助项目(51322905)(Project(51379161) supported by the National Natural Science Foundation of China （51379161）
Project(51322905) supported by the National Science Foundation for Excellent Young Scholars of China) （51322905）
