Surface wrinkling of a film on an anisotropic substrate
Surface wrinkling of a film on an anisotropic substrate
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DOI：
10.1080/15376494.2023.2263003
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发表时间：
2023-09
影响因子：
2.8
通讯作者：
Yaqi Guo;Guohua Nie
中科院分区：
文献类型：
--
作者：
Yaqi Guo;Guohua Nie
本文采用复变函数法和线性摄动分析方法，给出了各向异性衬底上薄膜起皱的解析解，并用有限元法对其进行了验证。说明了材料参数沿主轴方向对临界应变的影响。此外，基于Voigt假设确定的有效模量，考虑了纤维增强基板，结果表明，垂直于起皱方向的杨氏模量和面内剪切模量对起皱点有显著影响。在抗起皱方面，最有效的纤维布局是与起皱方向倾斜约45°并排列在基材上部区域。
This paper presents analytical solution for wrinkling of thin film bonded to anisotropic substrate by complex function method and linear perturbation analysis, which is verified by FEM. Effect of material parameters along principal axes on critical strain is illustrated. Furthermore, due to effective modulus determined by Voigt assumption, a fiber-reinforced substrate is considered, and results indicate that both Young’s modulus perpendicular to wrinkling direction and in-plane shear modulus have significant influence on wrinkling onset point. The most effective fiber layout in resisting wrinkling is at about 45°inclined to wrinkling direction and arranging at the upper area of the substrate.