Fokker M C, Janbaz S, Zadpoor A A
Department of Biomechanical Engineering, Faculty of Mechanical, Maritime and Materials Engineering, Delft University of Technology Mekelweg 2 Delft 2628CD The Netherlands
RSC Adv. 2019 Feb 11;9(9):5174-5188. doi: 10.1039/c8ra07565d. eCollection 2019 Feb 5.
Crumpled thin sheets exhibit extraordinary characteristics such as a high strength combined with a low volume ratio. This review focuses on the physics of crumpled thin sheets, including the crumpling mechanics, crumpling methods, and the mechanical behavior of crumpled thin sheets. Most of the physical and mechanical properties of crumpled thin sheets change with the compaction ratio, which creates the opportunity to obtain the properties that are needed for a specific application simply by changing the compaction ratio. This also enables obtaining unusual combinations of material properties, which cannot be easily found in nature. Furthermore, crumpling starts from a flat surface, which could first be decorated with (nano-) patterns or functionalized through other surface treatment techniques, many of which are only applicable to flat surfaces. Ultimately, the crumpling of thin sheets could be used for creating disordered mechanical metamaterials, which are less sensitive to geometric imperfections compared to ordered designs of mechanical metamaterials that are based, for example, on origami or lattice structures.
皱缩薄板展现出非凡的特性，如高强度与低体积比相结合。本综述聚焦于皱缩薄板的物理学，包括皱缩力学、皱缩方法以及皱缩薄板的力学行为。皱缩薄板的大多数物理和力学性能会随压实比而变化，这为仅通过改变压实比来获得特定应用所需的性能创造了机会。这也使得能够获得在自然界中不易找到的材料性能的异常组合。此外，皱缩始于一个平面，该平面首先可以用（纳米）图案进行装饰，或者通过其他仅适用于平面的表面处理技术进行功能化处理。最终，薄板的皱缩可用于制造无序机械超材料，与例如基于折纸或晶格结构的有序机械超材料设计相比，无序机械超材料对几何缺陷不太敏感。
