人民长江Issue(16)：53-57,71,6.DOI:10.16232/j.cnki.1001-4179.2015.16.013
基于正交设计的颗粒流模型宏细观参数相关分析--以岩石单轴压缩数值试验为例
Analysis on relationship between macro-parameters and micro-parameters in PFC2D model based on orthogonal design:case of rock uniaxial compression numerical test
摘要
Abstract
The analysis of the relationship between macro-parameters and micro-parameters in PFC2D model is very useful to the calibration of micro-parameters in application. The parallel bond model is selected as the basic model and the uniaxial com-pression numerical test is used to obtain the macro-parameters. An orthogonal design is adopted to design the numerical tests and multi-factor analysis of variance is used to analyze the influence of micro-parameters on macro-parameters. The results show that the elasticity modulus is mainly affected by Ec ( E-c ) , the Poisson's ratio is mainly affected by kn/ks ( k-n/k-s ); uniaxial compressive strength is mainly affected byσcn ,τcs and SD/Mean;μhas little influence on macroscopic strength parameters, but influences the macroscopic deformation parameters;and RA only influences Poisson's ratio. On this basis, the matching solution of micro-parameters for rock uniaxial compression numerical test is established.关键词
岩石单轴压缩数值试验/宏观参数/细观参数/正交设计/方差分析/颗粒流模型Key words
rock uniaxial compression numerical test/macro-parameter/micro-parameter/orthogonal design/analysis of variance/PFC2D model分类
建筑与水利引用本文复制引用
牛林新,辛酉阳..基于正交设计的颗粒流模型宏细观参数相关分析--以岩石单轴压缩数值试验为例[J].人民长江,2015,(16):53-57,71,6.
