皱纹
屈曲
材料科学
系列(地层学)
非线性系统
复合材料
结构工程
压力(语言学)
数字图像分析
薄膜
机械
工程类
物理
计算机科学
纳米技术
地质学
哲学
量子力学
古生物学
语言学
计算机视觉
作者
C.G. Wang,Y.P. Liu,L. Lan,L. Li,Huifeng Tan
标识
DOI:10.1016/j.ijmecsci.2016.02.011
摘要
This paper investigates the torsional wrinkling behavior of an annular thin film. Non-dimensional nonlinear von Karman buckling equations are established, which are solved by introducing a compound series method to acquire the post-wrinkling characteristics. The proposed theoretical model can accurately predict the critical wrinkling behavior and post-wrinkling characteristics of the annular thin film, which are verified by the experimental measurement based on the digital image correlation (DIC) technique. The theoretical results show that the post-wrinkling stress is intimately associated with the wrinkle configuration in the post-wrinkling stage. The hoop post-wrinkling stress along the wrinkle texture direction of the annular thin film dictates the wrinkle evolution. The wrinkle number remains constant in the elastic regime, which is determined by the critical buckling load factor. The results provide good guides to tune or control the wrinkles in the thin film.
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