Jamming of packings of frictionless particles with and without shear
Jamming of packings of frictionless particles with and without shear
复制标题
在有剪切力和无剪切力的情况下无摩擦颗粒填料的堵塞
DOI：
10.1088/1674-1056/27/6/066102
复制
发表时间：
2018
影响因子：
1.7
通讯作者：
Ning Xu
中科院分区：
文献类型：
--
作者：
Wen Zheng;Shiyun Zhang;Ning Xu
通过最小化无摩擦颗粒填充的焓，我们得到堵塞的固体在所需的压力，因此调查堵塞过渡剪切和不剪切。在这两种情况下，典型的缩放关系的干扰过渡恢复。与没有剪切的系统相比，剪切驱动的堵塞转变发生在较高的填充分数下，堵塞的固体更坚硬，具有各向异性力网络。此外，通过引入宏观摩擦系数，我们提出了一个解释之间的剪切和非剪切系统在固定压力下的包装分数差距。
By minimizing the enthalpy of packings of frictionless particles, we obtain jammed solids at desired pressures and hence investigate the jamming transition with and without shear. Typical scaling relations of the jamming transition are recovered in both cases. In contrast to systems without shear, shear-driven jamming transition occurs at a higher packing fraction and the jammed solids are more rigid with an anisotropic force network. Furthermore, by introducing the macro-friction coefficient, we propose an explanation of the packing fraction gap between sheared and non-sheared systems at fixed pressure.