• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2022, Vol. 58 ›› Issue (12): 130-139.doi: 10.3901/JME.2022.12.130

• 运载工程 • 上一篇    下一篇

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含索段连接器和金属反射丝网的索网形态分析

杜雪林1, 葛东明2, 杜敬利1   

  1. 1. 西安电子科技大学电子装备结构设计教育部重点实验室 西安 710071;
    2. 北京空间飞行器总体设计部 北京 100094
  • 收稿日期:2021-09-22 修回日期:2022-01-28 出版日期:2022-06-20 发布日期:2022-09-14
  • 通讯作者: 杜敬利(通信作者),男,1977年出生,博士,教授,博士研究生导师。主要研究方向机器人技术,可展开天线。E-mail:jldu@mail.xidian.edu.cn
  • 作者简介:杜雪林,男,1984年出生,博士,讲师。主要研究方向可展开天线。E-mail:xldu_1@stu.xidian.edu.cn
  • 基金资助:
    国家自然科学基金资助项目(51675398)

Form-state analysis of Cable Net with Cable Segment Connector and Wire Mesh Reflector

DU Xuelin1, GE Dongming2, DU Jingli1   

  1. 1. Key Laboratory of Electronic Equipment Structure Design of Ministry of Education, Xidian University, Xi'an 710071;
    2. Beijing Institute of Spacecraft System Engineering, Beijing 100094
  • Received:2021-09-22 Revised:2022-01-28 Online:2022-06-20 Published:2022-09-14

摘要: 在现有可展开天线索网形态分析的研究中,往往不计金属反射丝网的影响,且忽略了索段连接器,将其简化为节点进行处理。实际上,索网结构由索段和索段连接器组成,索网结构上还铺设有金属反射丝网,因此索网结构的形态分析中应考虑反射网和索段连接器所带来的影响。基于四元数来描述索段连接器的姿态,引入各向等应力薄膜单元,推导了索段连接器中心的力平衡方程和力矩平衡方程,建立考虑索段连接器的索膜结构形态优化模型。分别对考虑索段连接器和不考虑索段连接器的索膜结构进行形态分析,讨论索段连接器对分析结果的影响。最后,建立了索膜结构的有限元模型,对形态分析的结果进行验证。结果表明,建立的形态优化模型能够进一步提高所设计索膜结构的型面精度。

关键词: 索网, 索段连接器, 薄膜, 形态分析

Abstract: In the current research on the form-state analysis of the deployable antenna cable net, the influence of the metal reflective wire net was often ignored, and the cable segment connector was ignored, which was simplified as a node for processing. The cable net structure of deployable antenna is composed of cable segment and cable segment connector, and the front cable net is covered with wire reflective net, so the influence of reflective net and cable segment connector should be considered in the form-state analysis of cable net structure. Based on quaternion to describe the attitude of cable segment connector, introducing the membrane element with equal stress in all directions, the force balance equation and moment balance equation of cable segment connector center are derived, and then the shape optimization model of cable membrane structure considering cable segment connector is established. The cable membrane structures with and without cable segment connectors are analyzed, and the influence of cable segment connectors on the analysis results is discussed. Finally, the finite element model of cable membrane structure is established, and the results of form-state analysis are verified. The results show that the established form-state optimization model can further improve the surface accuracy of the designed cable-membrane structure.

Key words: cable net, cable segment connector, thin membrane, form-state analysis

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