中国粉体技术2017，Vol.23Issue(4)：43-48,6.DOI:10.13732/j.issn.1008-5548.2017.04.009
小麦PFC模型细观参数标定方法的验证与分析
Validation and analysis of calibration method for micro parameters of wheat PFC model
摘要
Abstract
In order to verify the feasibility of calibration method for micro parameters of a PFC model,taking wheat samples as an example,according to the requirements of calibration method for micro parameters provided by PFC software,first,triaxial tests were conducted in laboratory,then,numerical triaxial tests to model the laboratory tests were conducted by PFC as well.Research shows that numerical results could approach experimental results by adjusting micro parameters repeatedly,but it is almost impossible to make them coincide with each other.Under the same level,the particle friction coefficient of numerical model has significant effects on deviatoric stress.The initial slope of curve of deviatoric stress and strain is controlled by particle normal stiffness.The tendency of curve of deviatoric stress and strain is impacted by particle porosity.关键词
小麦/PFC模型/细观参数/标定方法Key words
wheat/PFC model/micro parameter/calibration method分类
轻工纺织引用本文复制引用
揣君,王录民,许启铿,刘永超,蒋敏敏..小麦PFC模型细观参数标定方法的验证与分析[J].中国粉体技术,2017,23(4):43-48,6.基金项目
公益性行业(粮食)科研专项,编号:201413003-4 （粮食）
