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arXiv 1807.00899cond-mat.soft
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一种起皱薄板的状态变量

A state variable for crumpled thin sheets

Omer Gottesman, Jovana Andrejevic, Chris H. Rycroft, Shmuel M. Rubinstein

摘要:

尽管一张纸很容易被揉皱并扔掉,但揉皱动力学通常被认为是复杂性的一个范例。这种复杂性来自于一个无序的褶皱薄片可以采取的无限多的构型。在这里,我们的实验表明,关键方面的褶皱有一个非常简单的描述,在褶皱动力学的损伤的演变可以在很大程度上描述一个单一的全球量,所有折痕的总长度。我们遵循的损伤网络在反复皱弹塑性片材的演变,并表明,这个量的动态是确定性的,只取决于折痕网络的瞬时状态,而不是在所有的皱曲历史。我们还表明,这个全局量首次捕捉到了褶皱板材的褶皱动力学。这导致了显着降低复杂性,允许一个高度无序系统的描述由一个单一的状态参数。类似的策略也可能有助于分析在几何和机械约束下进化的其他系统,从构造板块的断层到蛋白质的进化。

英文摘要:

Despite the apparent ease with which a sheet of paper is crumpled and tossed away, crumpling dynamics are often considered a paradigm of complexity. This complexity arises from the infinite number of configurations a disordered crumpled sheet can take. Here we experimentally show that key aspects of crumpling have a very simple description; the evolution of the damage in crumpling dynamics can largely be described by a single global quantity, the total length of all creases. We follow the evolution of the damage network in repetitively crumpled elastoplastic sheets, and show that the dynamics of this quantity are deterministic, and depend only on the instantaneous state of the crease network and not at all on the crumpling history. We also show that this global quantity captures the crumpling dynamics of a sheet crumpled for the first time. This leads to a remarkable reduction in complexity, allowing a description of a highly disordered system by a single state parameter. Similar strategies may also be useful in analyzing other systems that evolve under geometric and mechanical constraints, from faulting of tectonic plates to the evolution of proteins.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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