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ANALYSIS OF NEW FOLDABLE MECHANICAL SUPPORTING RING FOR SPACE ANTENNAS

Authors: Sh. Tserodze, E. Medzmariashvili, K. Chkhikvadze, N. Tsignadze


Abstract:

In the paper we analyze new design of deployable ring structure for symmetric and asymmetric (with circular and elliptical apertures) radio telescopes. The novelty consists in that new engineering and technological effects we obtained by synthesis of two conical pantograph systems and whole rod structure consists cylindrical and sliding hinges only.According to the selected and existing conceptual designs and acquired analysis resultsseveral variants of ring structures mathematical models have been constructed and compared by means of the NASTRAN software. The degrees of freedom of the hinges are simulated in local coordinate systems and are as much as possible approximated to the real model. Parametric FEM analysis tools of the concepts have been developed to study their static, modal and buckling behaviors.

Keywords: Deployable ring structure; buckling analysis; displacement; eigenfrequency

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