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
畅博彦 1关鑫 2金国光 1梁栋1
作者信息
- 1. 天津工业大学机械工程学院,天津,300387;天津市现代机电装备技术重点实验室,天津,300387
- 2. 天津工业大学机械工程学院,天津,300387
- 折叠
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.
Abstract
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 free-dom 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 honey-comb units.The influence regularity of various factors on folding ratio was analyzed,and the deploy-able 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Key words
deployable mechanism/honeycomb structure/Myard mechanism/Sarrus mecha-nism/folding ratio引用本文复制引用
基金项目
国家自然科学基金(52005368)
国家自然科学基金(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)
出版年
2024
国家科技期刊平台
NSTL
万方数据