论文标题
部分可观测时空混沌系统的无模型预测
Swelling-induced pattern transformations of periodic hydrogels -- from the wrinkling of internal surfaces to the buckling of thin films
论文作者
论文摘要
我们研究了由肿胀引起的结构不稳定性触发的周期性水凝胶系统的模式转换。本工作中考虑的微观结构的类型包括单相和两相的无凝胶结构以及增强的水凝胶薄膜。虽然观察到的单相结构的转换与实验发现很好地一致，但两相材料提供了与内表面皱纹相关的新型模式。此外，一项关于加强水凝胶薄膜的广泛参数研究揭示了设计由肿胀引起的不稳定性引起的复杂平面外表面模式的新机会。在提到的屈曲型不稳定性之后，我们遇到了在定期介质的内部表面的开发，然后才能丧失有效模量的强椭圆形。
We investigate pattern transformations of periodic hydrogel systems that are triggered by swelling-induced structural instabilities. The types of microstructures considered in the present work include single-phase and two-phase voided hydrogel structures as well as reinforced hydrogel thin films. While the observed transformations of the single-phase structures show good agreement with experimental findings, the two-phase materials provide novel patterns associated with wrinkling of internal surfaces. Furthermore, an extensive parametric study on the reinforced hydrogel thin films reveals new opportunities for the design of complex out-of-plane surface modes caused by swelling-induced instabilities. Next to the mentioned buckling-type instabilities, we encountered the development of micro-creases at the internal surfaces of periodic media before the loss of strong ellipticity of effective moduli.
