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THERMAL ANALYSIS OF SPACE TRUSSES INCLUDING THREE‐DIMENSIONAL EFFECTS

OMRI RAND (Department of Aerospace Engineering, Technion—Israel Institute of Technology, Haifa 32000, Israel)
DAN GIVOLI (Department of Aerospace Engineering, Technion—Israel Institute of Technology, Haifa 32000, Israel)

International Journal of Numerical Methods for Heat & Fluid Flow

ISSN: 0961-5539

Article publication date: 1 February 1992

Abstract

A numerical procedure is devised for the thermal analysis of three‐dimensional large truss‐type space structures exposed to solar radiation. Truss members made of an orthotropic material with a closed thin‐walled cross‐section of arbitrary shape are considered. Three‐dimensional thermal effects are taken into account in the analysis. In the proposed method, the governing equations are first put into a weak form. Then the Galerkin finite element method is applied with respect to the axial coordinate of each truss member. The circumferential variation of the temperature is treated by a symbolically‐coded harmonic balance procedure. The interaction between the various truss members is controlled by an iterative scheme. As a numerical example which demonstrates the proposed method, the temperature distribution in a parabolic dish structure is found. The results are compared to those obtained by standard one‐ and two‐dimensional analyses.

Keywords

Citation

RAND, O. and GIVOLI, D. (1992), "THERMAL ANALYSIS OF SPACE TRUSSES INCLUDING THREE‐DIMENSIONAL EFFECTS", International Journal of Numerical Methods for Heat & Fluid Flow, Vol. 2 No. 2, pp. 115-125. https://doi.org/10.1108/eb017484

Publisher

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MCB UP Ltd

Copyright © 1992, MCB UP Limited