A constitutive model with microstructure evolution for flow of rate-independent granular materials

被引：148
作者：
Sun, Jin [1 ]
Sundaresan, Sankaran [2 ]
机构：
[1] Univ Edinburgh, Sch Engn, Edinburgh EH9 3JL, Midlothian, Scotland
[2] Princeton Univ, Dept Chem & Biol Engn, Princeton, NJ 08544 USA
来源：
JOURNAL OF FLUID MECHANICS | 2011年 / 682卷
关键词：
granular media; rheology; DISSIPATIVE MATERIALS; PLANAR DEFORMATION; SLOW; SIMULATIONS; TRANSITION; EQUATIONS; SHEARING;
D O I：
10.1017/jfm.2011.251
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
A constitutive model is developed for the complex rheology of rate-independent granular materials. The closures for the pressure and the macroscopic friction coefficient are linked to microstructure through evolution equations for coordination number and fabric. The material constants in the model are functions of particle-level properties and are calibrated using data generated through simulations of steady and unsteady simple shear using the discrete element method (DEM). This model is verified against DEM simulations at complex loading conditions.
引用
收藏
页码：590 / 616
页数：27
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