Donato C C, Gomes M A F, de Souza R E
Departamento de Física, Universidade Federal de Pernambuco, 50670-901 Recife, PE, Brazil.
Phys Rev E Stat Nonlin Soft Matter Phys. 2003 Feb;67(2 Pt 2):026110. doi: 10.1103/PhysRevE.67.026110. Epub 2003 Feb 13.
Statistical properties of configurations of a metallic wire injected into a transparent planar two-dimensional cavity for three different injection geometries are investigated with the aid of high-resolution digital imaging techniques. The observed patterns of folds are studied as a function of the packing fraction of the wire within the cavity. In particular, we have examined the dependence of the mass of wire within a circle of radius R, as well as the dependence of the number of contacts wire-wire with the packing fraction. The distribution function n(s) of connected loops with internal area s formed as a consequence of the folded structure of the wire, and the average coordination number for these loops are also examined. Several scaling laws connecting variables of physical interest are obtained and discussed and a relation of this problem with disordered two-dimensional foam and random packing of disks is examined.
借助高分辨率数字成像技术，研究了三种不同注入几何形状下，注入透明平面二维腔体内的金属丝构型的统计特性。将观察到的褶皱图案作为腔内金属丝填充率的函数进行研究。特别地，我们研究了半径为R的圆内金属丝质量的依赖性，以及金属丝与金属丝接触数量与填充率的依赖性。还研究了由于金属丝的折叠结构而形成的内部面积为s的连通环的分布函数n(s)，以及这些环的平均配位数。得到并讨论了连接物理相关变量的几个标度律，并研究了该问题与无序二维泡沫和圆盘随机堆积的关系。
