X-ray tomography of a crumpled plastoelastic thin sheet

被引：21

作者：

Lin, Yen-Chih ^{[1
]}

Sun, Ji-Ming ^{[1
]}

Yang, H. W. ^{[1
]}

Hwu, Yeukuang ^{[2
]}

Wang, C. L. ^{[2
]}

Hong, Tzay-Ming ^{[1
]}

机构：

[1] Natl Tsing Hua Univ, Dept Phys, Hsinchu 300, Taiwan

[2] Acad Sinica, Inst Phys, Taipei 115, Taiwan

来源：

PHYSICAL REVIEW E | 2009年 / 80卷 / 06期

关键词：

aluminium; deformation; elastoplasticity; fractals; metallic thin films; X-ray microscopy;

D O I：

10.1103/PhysRevE.80.066114

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

Three-dimensional x-ray tomography is performed to investigate the internal structure and its evolution of a crumpled aluminum foil ball. 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.

引用

页数：6

共 33 条

[11]

De Gennes P.-G., 1979, SCALING CONCEPTS POL

[12] Energy distributions and effective temperatures in the packing of elastic sheets [J].