On-orbit thermal-mechanical coupling performance analysis of a deployed hoop-column antenna

IF 5.7 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures Pub Date : 2025-04-25 DOI:10.1016/j.tws.2025.113312

Wei Xu, Hao Zhu, Jiafeng Li

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Abstract

Deployable hoop-column antennas have been employed extensively in communication satellites over the past few decades. The antenna may subject to significant deformation or even heat-induced vibration during on-orbit operation as a result of solar radiation shocks, which could potentially impact its normal functionality. In this paper, the finite element theory and Fourier thermal element method are combined to study the thermal–structural response of the antenna under solar thermal shock in a real space thermal environment. According to the antenna’s orbital position and orientation relative to the Sun and Earth’s, a novel spatial heat flux analysis model is first established to calculate the real solar heat radiation flux on local positions of the antenna considering the Earth’s shadow effect and reflector’s light shading effect. The coupled thermal–mechanical coupling analysis model which incorporates the cable pre-tension is then established and validated by comparison with the ground thermal radiation impact test. The on-orbit thermal–mechanical dynamic response of the antenna is examined during satellite operation in two types of orbits (geostationary orbit and general elliptical orbit). The findings indicate that the light-shadow effect intensifies the temperature gradient of the antenna and influences the thermal deformation of the antenna. However, due to the structural stability of the hoop-column antenna, minimal thermal vibration of the antenna is discerned.

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展开环柱天线在轨热力耦合性能分析

在过去的几十年里，可展开环柱天线在通信卫星中得到了广泛的应用。由于太阳辐射冲击，天线在在轨运行期间可能会发生严重变形甚至热激振动，这可能会影响其正常功能。本文将有限元理论与傅里叶热单元法相结合，研究了真实空间热环境下太阳热冲击下天线的热结构响应。根据天线相对于太阳和地球的轨道位置和方向，首先建立了考虑地球阴影效应和反射器遮光效应的空间热流分析模型，计算了天线局部位置的真实太阳热辐射通量。建立了考虑锚索预张力的热力-力学耦合分析模型，并与地面热辐射冲击试验进行了对比验证。研究了卫星在静止轨道和普通椭圆轨道两种轨道上运行时天线的在轨热力动力响应。研究结果表明，光影效应加剧了天线的温度梯度，影响了天线的热变形。然而，由于环柱天线的结构稳定性，使得天线的热振动最小。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Thin-Walled Structures 工程技术-工程：土木

CiteScore

9.60

自引率

20.30%

发文量

801

审稿时长

66 days

期刊介绍： Thin-walled structures comprises an important and growing proportion of engineering construction with areas of application becoming increasingly diverse, ranging from aircraft, bridges, ships and oil rigs to storage vessels, industrial buildings and warehouses. Many factors, including cost and weight economy, new materials and processes and the growth of powerful methods of analysis have contributed to this growth, and led to the need for a journal which concentrates specifically on structures in which problems arise due to the thinness of the walls. This field includes cold– formed sections, plate and shell structures, reinforced plastics structures and aluminium structures, and is of importance in many branches of engineering. The primary criterion for consideration of papers in Thin–Walled Structures is that they must be concerned with thin–walled structures or the basic problems inherent in thin–walled structures. Provided this criterion is satisfied no restriction is placed on the type of construction, material or field of application. Papers on theory, experiment, design, etc., are published and it is expected that many papers will contain aspects of all three.