论文标题
杆链中的力链结构
Force chain structure in a rod-withdrawn granular layer
论文作者
论文摘要
当从颗粒层垂直提取杆时，可以通过有效的剪切形成倾斜的力链。在这项研究中，使用光弹性技术对杆上颗粒层中的力链结构进行了实验研究。从二维颗粒层中垂直提取杆，该颗粒由bidisperse光弹性磁盘组成。在退出期间，力链的发育过程通过光弹性效应可视化。通过对光弹性图像的系统分析，可以确定和分析由杆撤回的力链结构。特别是，讨论了讨论了杆绘制力$ f_ \ mathrm {w} $，总力链力$ f_ \ mathrm {t} $与其平均方向$θ$之间的关系。我们发现，倾斜的力链是通过退出新开发的。力链角度$θ$几乎是恒定的（从水平的$ 20^{\ circ} $），总力$ f_ \ mathrm {t} $逐渐增加。此外，$ f_ \ mathrm {t} \sinθ$显示与$ f_ \ mathrm {w} $的明确相关。
When a rod is vertically withdrawn from a granular layer, oblique force chains can be developed by effective shearing. In this study, the force-chain structure in a rod-withdrawn granular layer was experimentally investigated using a photoelastic technique. The rod is vertically withdrawn from a two-dimensional granular layer consisting of bidisperse photoelastic disks. During the withdrawal, the development process of force chains is visualized by the photoelastic effect. By systematic analysis of photoelastic images, force chain structures newly developed by the rod withdrawing are identified and analyzed. In particular, the relation between the rod-withdrawing force $F_\mathrm{w}$, total force-chains force $F_\mathrm{t}$, and their average orientation $θ$ are discussed. We find that the oblique force chains are newly developed by withdrawing. The force-chain angle $θ$ is almost constant (approximately $20^{\circ}$ from the horizontal), and the total force $F_\mathrm{t}$ gradually increases by the withdrawal. In addition, $F_\mathrm{t}\sinθ$ shows a clear correlation with $F_\mathrm{w}$.
