Experimental Investigations of Two Dimensional Constitutive Relationships for Granular Materials

将对快速剪切颗粒结构的本构关系进行实验验证。将进行简单的剪切流动试验。该实验装置使用圆盘状固体模拟平面流动。该项目将执行以下任务：(1)测量整个平面Couette流场中的颗粒运动参数；(2)分析一定体积浓度范围内固体的平均边界剪应力；(3)用实验数据验证计算机模拟的平面Couette流数据；以及(4)研究推塞流的机理。

Experimental verification of constitutive relationships for rapidly shearing granular structures will be performed. Simple shear flow tests will be conducted. This experimental apparatus simulates planar flows using disc-shaped solids. This project will perform the following tasks: (1) measure particle motion parameters over an entire plane couette flow field; (2) analyze the average boundary shear stress for a range of volumetric concentrations of solids; (3) verify the computer-simulated data for plane couette flows with experimental data; and (4) investigate the mechanism of plug flows.