• CN: 11-2187/TH
  • ISSN: 0577-6686

Journal of Mechanical Engineering ›› 2025, Vol. 61 ›› Issue (1): 92-100.doi: 10.3901/JME.2025.01.092

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Nonlinear Dynamic Characterization and Parameter Optimization Analysis of Cable-beam-membrane Tension Antenna Deployable Structure

LIU Ruiwei1, ZHANG Bifeng1,2, FAN Yating1, WEN Zhaolin1, XIAO Tibing2, GUO Hongwei3   

  1. 1. School of Naval Architecture and Marine Engineering, Guangzhou Maritime University, Guangzhou 510700;
    2. School of Electromechanical Engineering, Guangdong University of Technology, Guangzhou 510066;
    3. State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150001
  • Received:2024-01-27 Revised:2024-07-20 Published:2025-02-26

Abstract: The tension structure combined by cable, beam and membrane element, with the characterized of high folding ratio, light weight, rigid-flexible coupling, is one of the development directions of space deployable antenna. To study the nonlinear dynamic characteristics of the cable-beam-membrane complex flexible structure, consider the influence of the pretension, a new type of cable-beam-membrane tension antenna is analyzed for its nonlinear dynamic characteristics and optimized for its structural parameters. Firstly, based on the nonlinear dynamics theory, the nonlinear dynamics model of antenna deployable structure under the influence of pretension is established by adopting the temperature-structure pretension import method. On this basis, the nonlinear influence of pretension, material parameters and structural geometric parameters on the dynamic characteristics of the antenna deployable structure are analyzed. Results show that, the antenna nature frequency increases with the increase of the pretension, the diameter of the cable, and the beam cross-sectional area, and decreases with the increase of the membrane thickness. Finally, according to the sensitivity analysis results, based on the multi objective genetic algorithm, the antenna structure parameter optimization scheme is obtained. This result provides a theoretical and engineering application basis for the development of antenna prototype.

Key words: cable-beam-membrane structure, tension antenna, nonlinear dynamics, finite element analysis, structural parameters optimization

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