摘要
用离散单元法模拟了粒状体的直剪试验。基于数值模拟结果 ,提出了修正剪胀试样与剪切盒内壁间的摩擦对剪切强度影响的方法 ,估算了直剪试验试样的整体应变 ,并探讨了剪切面上宏观应力
A direct box shear test on granular material is successfully simulated by means of distinct element method. Based on the simulation results, a method is proposed to consider the effect of frictional resistances between the upper shear box and the sample on the measured shear strength when the sample is dilated during shearing. The overall strains in the sample are evaluated. The macro stress strain relations on the shear plane are related to the micro structural quantities of particles comprising the sample.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2001年第3期288-292,共5页
Chinese Journal of Rock Mechanics and Engineering
关键词
粒状体
离散单元法
直剪试验
微观结构
粒值模拟
granular material, distinct element method, direct box shear test, microscopic structure
