Dynamic Response Analysis of Large Aperture Space Deployable Antenna Structure under Impact Load

Abstract

Aiming at the dynamic problems caused by the ultra-high speed impact of tiny debris on the large-aperture space deployable antenna, as well as a deeper understanding of the dynamic characteristics of the large-aperture antenna when it works in orbit, the dynamic characteristics of deployable antenna are analyzed. Firstly, ANSYS finite element simulation software is used to establish a spatial deployable antenna structure model to simulate various working environments of the antenna structure in space. Secondly, the dynamic characteristics of the antenna structure are obtained by the modal analysis of the antenna structure using the subspace method. Thirdly, the dynamic response of the antenna structure and the damage state of the key components under the impact of different impact velocities are studied respectively. The results show that the antenna structure has the characteristics of low stiffness, large flexible amplitude, low frequency and small self-damping. In the design of deployable antenna structure, corresponding improvement measures can be given to improve the stiffness and durability of the structure. The dynamic analysis of the space deployable antenna structure provides a theoretical basis for optimizing the dynamic characteristics of the structure and improving the working performance of the structure, and also provides a favorable reference for the design of the large aperture space deployable antenna structure.