论文标题
在二维中无摩擦盘和杆的巨大剪切混合物中的耗尽力
Depletion Forces in Athermally Sheared Mixtures of Frictionless Disks and Rods in Two Dimensions
论文作者
论文摘要
我们进行数值模拟，以研究在三种不同类型的全局线性变形率下以有限的应变速率下的无摩擦圆圆盘和细长杆的无摩擦混合物的行为：（i）简单剪切，（ii）纯剪切，（ii）纯剪切，（iii）同位素压缩。我们发现，这种变形引起的波动导致耗尽力，导致杆在简单和纯剪切的情况下将杆分组为平行定向的簇，但不能用于各向同性压缩。对于简单的剪切，我们发现，随着杆的比例增加，这种聚类会增加，从而导致杆的平均旋转速率增加，并减少其列有序的大小。
We carry out numerical simulations to study the behavior of an athermal mixture of frictionless circular disks and elongated rods in two dimensions, under three different types of global linear deformation at a finite strain rate: (i) simple shearing, (ii) pure shearing, and (iii) isotropic compression. We find that the fluctuations induced by such deformations lead to depletion forces that cause rods to group in parallel oriented clusters for the cases of simple and pure shear, but not for isotropic compression. For simple shearing, we find that as the fraction of rods increases, this clustering increases, leading to an increase in the average rate of rotation of the rods, and a decrease in the magnitude of their nematic ordering.
