南京航空航天大学学报（英文版）2023，Vol.40Issue(1)：80-97,18.
模块化可展开天线支撑结构设计与力学特性研究
Design and Mechanical Characteristics of Support Structure for Modular Deployable Antenna
摘要
Abstract
A new configuration of support structure for modular space deployable antenna is proposed, and its mechanical characteristics are studied to meet the urgent needs of large-scale, high-precision, and high-rigidity development of space deployable antenna. On the basis of the basic theory of mechanism, the overall scheme design and detailed design of support structure are developed, and a 3-D model of modular deployable antenna consisting of 19 hexagonal prism modules is established. In accordance with strut stability theory, a static analysis model of support structure is established, and the value range of pretightening force in cables is obtained. A dynamic analysis model of the antenna structure is established, and the modal analysis is conducted. The natural frequency influencing factors and sensitivity analysis are performed. A principle prototype of support structure is developed, and the deployment function test and verification are conducted. Results show that the pretightening cables have a great influence on the structural stiffness, and the structural stiffness is increased by about 2.01 times after the pretightening cables are deployed. The natural frequency is sensitive to the material density and elastic modulus of members and the size parameters of chord beams and diagonal beams. The developed principle prototype in this paper is deployed smoothly and gently, verifying the feasibility of the structural design. Research results provide theoretical reference and technical support for the basic research and engineering application of modular deployable antenna.关键词
可展开天线/模块化结构/静力学/动力学/灵敏度/模态分析Key words
deployable antenna/modular structure/statics/dynamics/sensitivity/modal analysis分类
航空航天引用本文复制引用
田大可,郭振伟,金路,高海明,戚一凡,赵丙峰..模块化可展开天线支撑结构设计与力学特性研究[J].南京航空航天大学学报（英文版）,2023,40(1):80-97,18.基金项目
This work was supported by the Key Program of National Natural Science Foundation of China(No.51835002),the Key Laboratory of Vibration and Con-trol of Aero-propulsion System,Ministry of Education,Northeastern University(No.VCAME202207),the China Postdoctoral Science Foundation(No.2019M661126),the Natural Science Foundation of Liaoning Province(No.2022-MS-278),and the Foundation of Liaoning Education Depart-ment(No.LJKZ0563). （No.51835002）
