A flat-foldable equiangular spiral folding pattern inspired by sunflowers for deployable structures  

作　　者：Shuangqing YU Jinguo LIU Pengyuan ZHAO Yingying TANG 

机构地区：[1]State Key Laboratory of Robotics,Shenyang Institute of Automation,Chinese Academy of Sciences,Shenyang 110016,China [2]Institutes for Robotics and Intelligent Manufacturing,Chinese Academy of Sciences,Shenyang 110169,China [3]University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Chinese Journal of Aeronautics》2024年第6期425-438,共14页中国航空学报（英文版）

基　　金：supported in part by National Key R&D Program of China(Grant No.2018YFB1304600);CAS Interdisciplinary Innovation Team(Grant No.JCTD-2018-11);the Natural Science Foundation of China(Grant No.51775541).

摘　　要：Flasher origami pattern has been widely utilized to improve the stowage efficiency of deployable structures.Nevertheless,flasher origami cannot be folded fully flat,and they still have great potential for optimization in terms of storage volume and folding creases.In this paper,a flat foldable equiangular spiral folding pattern inspired by the sunflower disk is introduced.Then,a parametric design method for this equiangular spiral crease diagram is introduced in detail.Subsequently,a kinematic model of the equiangular spiral folding pattern is established based on the kinematic equivalence between rigid origami and spherical linkages.A simulation of the developed model demonstrates that the equiangular spiral folding pattern can be folded flat.Using the folded ratio as an evaluation index,the calculated results and experiments show that the equiangular spiral crease pattern can yield fewer creases and improve stowage efficiency in comparison to flasher origami pattern.Equiangular spiral folding pattern can save a considerable amount of space and provide a new approach to spatially deployable structures.

关 键 词：Flasher origami Sunflower-inspired Deployable structures Flat-foldability Equiangular spiral folding pattern 

分 类 号：V42[航空宇航科学与技术—飞行器设计]