Solid Mechanics and Vehicle Conceptual Design

Thermally induced vibration and suppression of space deployable antenna support structures

  • Cheng LUO ,
  • Guiping LIN ,
  • Min LUO ,
  • Yuandong GUO
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  • 1.School of Aeronautic Science and Engineering,Beihang University,Beijing 100191,China
    2.Beijing Institute of Space System Engineering,Beijing 100094,China
E-mail: guoyd@buaa.edu.cn

Received date: 2025-09-17

  Revised date: 2025-10-09

  Accepted date: 2025-10-27

  Online published: 2025-11-07

Supported by

National Level Project

Abstract

A structural dynamics model was established to address the issue of thermal deformation and structural vibration of large space deployable antenna support structures under cyclic dynamic temperature loads when entering and exiting the Earth’s shadow. Equivalent thermodynamic material parameters of composite material members were provided, and thermal vibration response analysis was conducted. The nonlinear fluid damping model of Passive Nonlinear Viscous Damper (PNVD) is presented, and a spatially deployable antenna support truss structure thermal vibration suppression method based on nonlinear fluid damping is proposed. The experimental results of modal damping of large deployable antenna support structures show that before and after installing dampers, the fundamental frequency of the structure changes by no more than 1%, and the modal damping ratio increases by more than 2%.

Cite this article

Cheng LUO , Guiping LIN , Min LUO , Yuandong GUO . Thermally induced vibration and suppression of space deployable antenna support structures[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2026 , 47(14) : 232798 -232798 . DOI: 10.7527/S1000-6893.2025.32798

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