Surface wrinkling in generalized Blatz-Ko materials

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• 作者：Qi Zhang ; ^{qi_zhang@brown.edu} ; Janet A. Blume
• 关键词：Wrinkle ; Compressible neo-Hookean bilayer ; The generalized Blatz&ndash ; Ko material ; Bifurcation
• 刊名：Extreme Mechanics Letters
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：11
• 期：Complete
• 页码：68-76
• 全文大小：1705 K
• 卷排序：11

文摘

The effect of substrate compressibility on surface wrinkling in soft materials is analyzed through theoretical analysis. The generalized Blatz–Ko model, which may reduce to commonly used incompressible and compressible materials such as neo-Hookean, Mooney–Rivlin and Blatz–Ko models, is employed. The wrinkling behavior of a thin film bonded to a soft compressible substrate is analyzed. We also look at wrinkling in slabs of finite thickness, which is admissible (although not necessarily stable) in a subclass of the materials considered.