X-ray tomography of a crumpled plastoelastic thin sheet

Details X-ray tomography of a crumpled plastoelastic thin sheet X-ray tomography of a crumpled plastoelastic thin sheet

2009-05-19

arxiv.org/abs/0905.3016v3

Physical Review E 80, 066114 (2009)

Physics

Condensed Matter

Soft Condensed Matter

Scientific paper

10.1103/PhysRevE.80.066114

A three-dimensional X-ray tomography is performed to investigate the internal structure and its evolution of a crumpled aluminum foil. The upper and lower bounds of the internal geometric fractal dimension are determined, which increase with the compression. Contrary to the simulation results, we find that the mass distribution changes from being inhomogeneous to uniform. Corroborated with the evidence from previous experiments, these findings support the physical picture that the elastic property precedes the plastic one at dominating the deformation and mechanical response for all crumpled structures. We show that the interior of a crumpled ball at the plastic regime can be mapped to the compact packing of a granular system.

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