文献类型：期刊文献

英文题名：Numerical Simulation of Rockfill Materials Based on Fractal Theory

作者：Han, Hongxing[1];Ma, Yun[1];He, Wei[1];Yang, Weifang[1];Fu, Xudong[2]

通讯作者：Han, HX[1]

机构：[1]Xinxiang Univ, Sch Civil Engn & Architecture, Xinxiang 453003, Henan, Peoples R China;[2]Wuhan Univ, Sch Civil Engn, Wuhan 430072, Peoples R China

第一机构：新乡学院土木工程与建筑学院

通讯机构：[1]corresponding author), Xinxiang Univ, Sch Civil Engn & Architecture, Xinxiang 453003, Henan, Peoples R China.|[1107114]新乡学院土木工程与建筑学院;[11071]新乡学院;

年份：2022

卷号：12

期号：1

外文期刊名：APPLIED SCIENCES-BASEL

收录：;Scopus(收录号：2-s2.0-85121981757);WOS:【SCI-EXPANDED(收录号:WOS:000748206700001)】；

基金：FundingThis research was funded the National Nature Science Foundation of China (No. 51978540), the Doctor foundation of Xinxiang University (No. 1366020159).

语种：英文

外文关键词：numerical simulation; rockfill materials; fractal model; mesomechanical properties

摘要：With the use of the particle flow code in two dimensions, a fractal model is established with the number of particles of different particle fractions used as the statistics to study the fractal characteristics of particle size distribution. Numerically simulated specimens obtained by four scale methods are subjected to the relative density test and the biaxial compression test to explore the influences of fractal dimension D on the macroscopic and mesomechanical properties of specimens, as well as to study the relationship between fractal dimension D and different mechanical performance indexes. Results show that the particle size distribution of each of the four groups after scale exhibits fractal characteristics, with the fractal dimension D ranging from 1.27 to 2.03. The number of fine particles in the specimen increases with the fractal dimension D, the particle aggregates become more compact, the macroscopic mechanical properties of the specimens are improved, and a linear relationship exists between the fractal dimension D and different mechanical performance indexes. A large fractal dimension D corresponds to a great mesoparticle coordination number.