School of Civil Engineering, Chongqing University, Chongqing 400045, China.
Institute for Risk and Reliability, Leibniz Universität Hannover, Hannover 30167, Germany.
Phys Rev E. 2023 Mar;107(3-2):035004. doi: 10.1103/PhysRevE.107.035004.
Ori-kirigami structures offer a good avenue for designing mechanical metamaterials due to their unique advantage of being independent of material properties and scale limitations. Recently, the scientific community has been greatly interested in exploiting the complex energy landscape of ori-kirigami structures to construct multistable systems and play their valuable role in different applications. Here, we present three-dimensional ori-kirigami structures based on generalized waterbomb units, a cylindrical ori-kirigami structure based on waterbomb units, and a conical ori-kirigami structure based on trapezoidal waterbomb units. We investigate the inherent relationships between the unique kinematics and mechanical properties of these three-dimensional ori-kirigami structures and explore their potential usage as mechanical metamaterials that exhibit negative stiffness, snap-through, hysteresis effects, and multistability. What makes the structures even more attractive is their massive folding stroke, where the conical ori-kirigami structure can obtain a huge folding stroke of more than twice its initial height through penetration of its upper and lower boundaries. This study forms the foundation for designing and constructing three-dimensional ori-kirigami metamaterials based on generalized waterbomb units for various engineering applications.
折纸结构由于其独立于材料属性和尺度限制的独特优势，为设计力学超材料提供了良好的途径。最近，科学界对利用折纸结构的复杂能量景观来构建多稳定系统产生了浓厚的兴趣，并在不同的应用中发挥了它们的宝贵作用。在这里，我们提出了基于广义水袋单元的三维折纸结构、基于水袋单元的圆柱形折纸结构和基于梯形水袋单元的锥形折纸结构。我们研究了这三种三维折纸结构独特的运动学和力学性能之间的内在关系，并探讨了它们作为具有负刚度、突跳、滞后效应和多稳定性的力学超材料的潜在用途。使这些结构更具吸引力的是它们的大规模折叠行程，其中锥形折纸结构可以通过穿透其上下边界获得超过初始高度两倍的巨大折叠行程。这项研究为设计和构建基于广义水袋单元的三维折纸超材料奠定了基础，可用于各种工程应用。
