Experimental measurement of granular fabric and its evolution under shearing
Experimental measurement of granular fabric and its evolution under shearing
复制标题
DOI：
10.1051/epjconf/201714002020
复制
发表时间：
2017-06
期刊：
影响因子：
--
通讯作者：
Max Wiebicke;E. Andò;E. Salvatore;G. Viggiani;I. Herle
中科院分区：
文献类型：
--
作者：
Max Wiebicke;E. Andò;E. Salvatore;G. Viggiani;I. Herle
X射线微计算机断层扫描（CT）使天然颗粒物质的三维原位成像成为可能。先前使用X射线μ CT和三轴压缩试验的工作研究了剪切带期间单个颗粒的3D运动学[1]。这项工作的目的是补充这些测量的运动学与测量不同的织物实体，如粒子或接触方向。结果发现，不同的织物实体的个人取向拿起的形成和发展的剪切带的方向。大部分取向的各向异性的演变对应于剪切试验期间的宏观行为。
X-ray μ computed tomography (CT) made three-dimensional in-situ imaging of natural granular materials possible. Previous work using x-ray μ CT and triaxial compression tests has studied the 3D kinematics of individual grains during shear banding [1]. This works aims to supplement these measurements of kinematics with the measurement of different fabric entities, such as particle or contact orientations. It was found that the individual orientations of the different fabric entities pick up on the forming and the direction of the evolving shear band. The evolution of the anisotropy of the bulk of orientations corresponds to the macroscopic behaviour during the shearing test.