Surface Wrinkling Patterns on a Core-Shell Soft Sphere

被引：215

作者：

Li, Bo ^{[1
,2
]}

Jia, Fei ^{[1
,2
]}

Cao, Yan-Ping ^{[1
,2
]}

Feng, Xi-Qiao ^{[1
,2
]}

Gao, Huajian ^{[3
]}

机构：

[1] Tsinghua Univ, Dept Engn Mech, Ctr Nano & Micro Mech, Beijing 100084, Peoples R China

[2] Tsinghua Univ, Dept Engn Mech, Inst Biomech & Med Engn, Beijing 100084, Peoples R China

[3] Brown Univ, Sch Engn, Providence, RI 02912 USA

来源：

PHYSICAL REVIEW LETTERS | 2011年 / 106卷 / 23期

关键词：

STRESS;

D O I：

10.1103/PhysRevLett.106.234301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The three-dimensional patterns of surface wrinkling on a core-shell soft sphere are investigated through buckling and postbuckling analyses under differential tissue growth or shrinkage. With increasing deformation, the sphere first exhibits a buckyball-like wrinkling pattern and then undergoes a wrinkle-to-fold transition into labyrinth folded patterns, in agreement with experimental observations. This transition involves dynamic movement, rotation, and coalescence of polygons formed during the initial buckling.

引用

页数：4

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