Cross-sectional zero-dimension temperature model for thin-walled circular tubes in space environment

IF 5.7 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures Pub Date : 2024-10-15 DOI:10.1016/j.tws.2024.112591

Zhe Ma, Zhenxing Shen

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引用次数: 0

Abstract

A sufficiently accurate, yet computationally efficient prediction of temperature field is essential for design of spacecraft structures. This paper presents a model dimension reduction method for thermal analysis of thin-walled circular tubes in space environment, which takes into account radiation heat transfer among the internal surfaces besides heat conduction along the circumferential direction and radiative emission from the external surface. Temperature distribution on the tube cross section is approximated by a series of harmonic functions, so that a one-dimensional problem is reduced to that of zero dimension. The relation between average and perturbation temperatures that depend only on time is broadened to fully coupled one. By comparison to the previous model and the plane finite element model, the accuracy and economy of the new model are illustrated. The results show that internal radiation exchange plays an important role in thermal analysis of thin-walled circular tubes used extensively in spacecraft appendages. Furthermore, differences between present and previous models are analyzed and a two-way analysis of variance is performed to determine the effect of various physical and geometric parameters on the temperature distribution and response of the tubes. The work can be further developed to analyze thermally induced deformation and vibration of spacecraft structures.

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太空环境中薄壁圆管的横截面零维温度模型

对温度场进行足够精确且计算效率高的预测对于航天器结构的设计至关重要。本文提出了一种用于空间环境中薄壁圆管热分析的模型尺寸缩减方法，该方法除了考虑沿圆周方向的热传导和外表面的辐射发射外，还考虑了内表面之间的辐射传热。管子横截面上的温度分布由一系列谐函数近似表示，从而将一维问题简化为零维问题。仅取决于时间的平均温度和扰动温度之间的关系被扩展为完全耦合的关系。通过与以前的模型和平面有限元模型的比较，说明了新模型的准确性和经济性。结果表明，内部辐射交换在航天器附属装置中广泛使用的薄壁圆管的热分析中起着重要作用。此外，还分析了当前模型与之前模型之间的差异，并进行了双向方差分析，以确定各种物理和几何参数对管道温度分布和响应的影响。这项工作可以进一步发展，用于分析航天器结构的热诱导变形和振动。

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.