多闭环厚板折展蜂窝机构的几何设计与性能分析  

Geometric Design and Performance Analysis of Multi-closed-loop Deployable Honeycomb Mechanisms with Thick Panels

作　　者：畅博彦[1,2] 关鑫 金国光 梁栋[1,2] CHANG Boyan;GUAN Xin;JIN Guoguang;LIANG Dong(School of Mechanical Engineering,Tiangong University,Tianjin,00387;Tianjin Key Laboratory of Advanced Mechatronics Equipment Technology,Tianjin,300387)

机构地区：[1]天津工业大学机械工程学院,天津300387 [2]天津市现代机电装备技术重点实验室,天津300387

出　　处：《中国机械工程》2024年第7期1156-1167,共12页China Mechanical Engineering

基　　金：国家自然科学基金(52005368,52175243);天津市高等学校创新团队培养计划(TD13-5037);天津市教委科研计划(2018KJ205)。

摘　　要：基于厚板折纸理论设计出一种单闭环空间折展机构,并用螺旋理论对机构的自由度进行了分析。引入Myard类型约束和Sarrus类型约束,提出将机构自由度降低为1的2种方法,对应得到M型和S型折展蜂窝单元。将2种折展蜂窝单元的运动特征与平面镶嵌原理相结合,构造出M型和S型折展蜂窝机构。研究了设计参数对机构折展率的影响规律,并以提高折展率为目标对机构的结构进行了优化。研究结果表明,M型折展蜂窝机构完全展开后可形成单侧平整的表面;S型折展蜂窝机构的折展率更大。A new type of space mechanisms with single-closed-loop was proposed according to thick-panel origami teory,and the mobility was analyzed by using screw theory.The degree of freedom of mechanism was reduced to 1 by the introduction of Myard constraint and Sarrus constraint,and the corresponding deployable units were obtained with the names of Myard deployable honeycomb unit and Sarrus deployable honeycomb unit.M-type honeycomb mechanism and S-type honeycomb mechanism were proposed based on kinematic analysis and planar mosaic array of deployable honeycomb units.The influence regularity of various factors on folding ratio was analyzed,and the deployable honeycomb units were optimized with the rising of folding ratio index.The results show that M-type honeycomb mechanism may achieve flat surface,and S-type honeycomb mechanism may achieve higher folding ratio index.

关 键 词：折展机构 蜂窝结构 Myard机构 Sarrus机构 折展率 

分 类 号：TH112[机械工程—机械设计及理论]