松砂直剪试验中的经典与非经典场量数值分析

Classical and Nonclassical Variables Analysis of Loose Sand in Direct Shear Test by Discrete Element Method Analysis

摘要:

采用改进的离散元软件,模拟分析了松散砂土直剪试验中的经典与非经典场量.经典场量包括应力、应变、速度场以及应力路径;非经典场量包括转动场、组构和配位数等.分析了剪切过程中经典与非经典场量的变化规律,探讨了两种场量之间的联系.研究结果表明,非经典变量是经典变量的微观本质体现.

Abstract:

In order to analyze the classical and nonclassical variables of loose sand in direct shear test,numerical investigation were carried out by DEM.Classical variables include stress,strain,velocity fields,and stresspath.Nonclassical variables include averaged pure rotation rate(APR),fabric and coordination number.In the study,the changes of variables and the relationships among them were analyzed.The results show that the nonclassical variables are microscopically essence of classical variables.