Beyond uni-directional hierarchical wrinkle formation

超越单向分层皱纹形成

• 批准号: 386450667
• 负责人: Professor Dr. Andreas Fery
• 金额: --
• 依托单位: Institut für Numerische Mathematik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/386450667?language=en
• 关键词: Beyond; uni; directional; hierarchical; wrinkle

This project aims at understanding hierarchical wrinkle formation of substrate-supported thin films. In contrast to the predecessor project, which was aiming at wrinkles that show one preferred direction resulting from uni-axial deformation, more complex bi-axial and temporally controlled load scenarios will be investigated. Further, we want to expand the developed masking approach towards 2D patterned hierarchical wrinkling. To do so we will develop novel experimental setups to control complex bi-directional loading patterns in combination with a masking approach. We will complement the experimental investigations by detailed finite element simulations. These will focus on novel variational formulations of viscoelastic material behavior and on the detailed study of wrinkle formation by bifurcation analysis. This will allow the determination and temporal control, and study of the resulting complex 2D wrinkling patterns.

本项目旨在了解衬底支撑薄膜的分层褶皱的形成。与前人的项目不同，前人的项目针对的是单轴变形导致的皱纹，将研究更复杂的双轴和时间可控的载荷场景。此外，我们希望将开发的遮罩方法扩展到2D图案层次化褶皱。为此，我们将开发新的实验装置来控制复杂的双向加载模式，并结合掩蔽方法。我们将通过详细的有限元模拟来补充实验研究。这些将集中在粘弹性材料行为的新的变分公式和通过分叉分析详细研究褶皱的形成。这将允许确定和时间控制，并研究由此产生的复杂的2D皱纹图案。