文献类型：期刊文献

英文题名：Stretch-induced wrinkling of anisotropic hyperelastic thin films

作者：Chai, Ping-Ping[1];Liu, Yang[2,3];Wang, Fan-Fan[1]

机构：[1]East China Univ Sci & Technol, Sch Math, Shanghai 200237, Peoples R China;[2]Tianjin Univ, Sch Mech Engn, Dept Mech, Tianjin 300354, Peoples R China;[3]Tianjin Key Lab Modern Engn Mech, Tianjin 300354, Peoples R China

年份：2024

卷号：200

外文期刊名：THIN-WALLED STRUCTURES

收录：;EI(收录号：20241916053619);WOS:【SCI-EXPANDED(收录号:WOS:001239077000001)】；

基金：This work was supported by the National Natural Science Founda-tion of China (Project No. 12072227) . The COMSOL simulations were carried out on TianHe-1 (A) at the National Supercomputer Center in Tianjin, China.

语种：英文

外文关键词：Thin films; Wrinkling; Anisotropy; Plate theory; Finite element simulations

摘要：Thin films may experience wrinkling instability when two clamped ends are stretched uniaxially. For a fiberreinforced anisotropic thin film, the wrinkling distributions and evolutions can be significantly affected by the fiber orientation and the anisotropic parameters. In this paper, we study the stretch-induced wrinkling of anisotropic thin films based on a uniformly-valid asymptotic plate equation for anisotropic materials derived from the three-dimensional field equations. A numerical model is established in COMSOL Multiphysics by virtue of the weak form of plate equations and by employing the Holzapfel-Gasser-Ogden model. The effects of fiber orientations and anisotropic parameters on wrinkling evolutions are unraveled from various case studies. In particular, we find that there exists a critical fiber orientation interval where the usual isola-center bifurcation will give way to the pitchfork bifurcation, and the associated amplitude against strain curve presents an N shape. A phase diagram for different bifurcation types is characterized as well. Our numerical model is validated by three-dimensional numerical simulations. It is expected that the results in this paper will offer useful insight into pattern formation in anisotropic soft materials.