Dynamic Analysis of Support Truss Structure for Modular Space Deployable Antenna under Temperature Action

In order to study the influence of temperature on the structure of deployable antenna, a dynamic analysis method was proposed. ANSYS finite element software was used to establish the modular space deployable antenna support truss structure model, subspace method was used to conduct modal analysis of the space deployable support truss structure, the natural frequency and mode of the structure was obtained. At the same time, the temperature environment of the deployable antenna in orbit is simulated, the deflection of the structure at 100 temperature is analyzed, and the deflection diagram of the support truss structure at 100 temperature is obtained. The results show that temperature has a great influence on the deflection of the antenna structure, and corresponding measures should be taken to reduce the influence of temperature on the deflection of the antenna structure during the design of deployable antenna. The dynamic analysis method proposed in this paper can provide reference for other truss deployable antenna structures.