Entropic rigidity of a crumpling network in a randomly folded thin sheet

Details Entropic rigidity of a crumpling network in a randomly folded thin sheet Entropic rigidity of a crumpling network in a randomly folded thin sheet

2008-08-24

arxiv.org/abs/0808.3273v1

PHYSICAL REVIEW E 77, 051124 (2008)

Physics

Condensed Matter

Statistical Mechanics

34 page, 9 figures

Scientific paper

10.1103/PhysRevE.77.051124

We have studied experimentally and theoretically the response of randomly folded hyperelastic and elastoplastic sheets on the uniaxial compression loading and the statistical properties of crumpling networks. The results of these studies reveal that the mechanical behavior of randomly folded sheets in the one-dimensional stress state is governed by the shape dependence of the crumpling network entropy. Following up on the original ideas by Edwards for granular materials, we derive an explicit force-compression relationship which precisely fits the experimental data for randomly folded matter. Experimental data also indicate that the entropic rigidity modulus scales as the power of the mass density of the folded ball with universal scaling exponent.

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