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Tuning of Multi-stability Profile and Transition Sequence of Stacked Miura-origami metamaterials

Acta Mechanica Solida Sinica 2023年第4期36卷 554-568页

作者： Haiping Wu Hongbin Fang Institute of AI and Robotics Fudan UniversityShanghai 200433China MOE Engineering Research Center of AI and Robotics Fudan UniversityShanghai 200433China Shanghai Engineering Research Center of AI and Robotics Fudan UniversityShanghai 200433China

Multi-stable origami structures and metamaterials possess unique advantages and could exhibit multiple stable three-dimensional configurations,which have attracted widespread research interest and held promise for applications in many *** a great deal of attention has been paid to the design and application of multi-stable origami structures,less knowledge is available about the transition sequence among different stable configurations,especially in terms of the fundamental mechanism and the tuning *** fill this gap,with the multi-stable dual-cell stacked Miura-ori chain as a platform,this paper explores the rules that govern the configuration transition and proposes effective methods for tuning the transition ***,by correlating the energy evolution,the transition paths,and the associated force-displace-ment profiles,we find that the critical extension/compression forces of the component cells play a critical role in governing the transition ***,we summarize the rules for predicting the transition sequence:the component cell that first reaches the critical force during quasi-static extension or compression will be the first to undergo a configuration *** on these findings,two methods,i.e.,a design method based on crease-stiffness assignment and an online method based on internal pressure regulation,are proposed to tune the stability profile and the transition sequence of the multi-stable origami *** crease-stiffness design approach,although effective,cannot be employed for online tuning once the prototype has been *** pressure-based approach,on the other hand,has been shown experimentally to be effective in adjusting the constitutive force-displacement profiles of the component cells and,in turn,tuning the transition sequence according to the summarized *** results of this study will advance the state of the art of origami mechanics and promote the engineering applications of mu

关键词： origami metamaterial Bi-stability origami mechanics Pneumatic origami Snap-through transition

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