中南大学学报（自然科学版）2017，Vol.48Issue(9)：2425-2431,7.DOI:10.11817/j.issn.1672-7207.2017.09.022
颗粒实际形状在PFC数值研究中的模拟方法
Simulation of real particle shape in PFC numerical analysis
摘要
Abstract
For the simulation of real particle shape in PFC numerical analysis, four main methods were summarized. The calculation theory of PFC, as well as its basic command "Clump", was briefly introduced before the main steps of each method were outlined. Afterwards, the advantages and disadvantages of all the four methods were compared and discussed. The results show that in all the four methods, the surface profile of particles needs to be obtained at first. On the basis of surface profile, basic elements are bonded together through a certain way to simulate the real particle shape, among which the "Clump" command is mostly used. The higher the number of the basic elements used, the higher the simulation accuracy is; meanwhile, the longer time it takes to calculate. Taking an appropriate method to simulate the real particle shape plays decisive role in balancing the simulation precision and the computational efficiency.关键词
颗粒材料/颗粒形状/离散元法/PFC数值研究Key words
granular material/particle shape/discrete element method/PFC numerical analysis分类
建筑与水利引用本文复制引用
林呈祥,凌道盛..颗粒实际形状在PFC数值研究中的模拟方法[J].中南大学学报（自然科学版）,2017,48(9):2425-2431,7.基金项目
国家自然科学基金资助项目(51278451) （51278451）
浙江省自然科学基金资助项目(LZ12E09001) (Project(51278451) supported by the National Natural Science Foundation of China （LZ12E09001）
Project(LZ12E09001) supported by the Natural Science Foundation of Zhejiang Province) （LZ12E09001）
