Design and Dynamics of Large-scale Solar Arrays with Inflatable Mast

doi:10.3901/JME.2020.05.093

Abstract

Abstract: A structural design method of large-scale solar array deployed was presented by an inflatable mast, which has the characteristics of thermal curable composite inflatable hinges to achieve efficient folding, and to improve structural stiffness after deployment. The principle prototype is developed, and the ground deployment test is carried out to verify the performance of deployment of the inflatable mast. The structural design of deployable mast is characterized by the combination of foldable inflatable tubes and carbon fiber beams, which can reduce thermal power consumption and improve structural stiffness. Considering the web design of deployable mast and the influence of rigidizable material on the dynamic characteristics of large-scale structures, the finite element model of the semi-structure of solar array is established, and the modal of the structure is solved by Block Lanczos method. The vibration response of structure under different excitation positions is calculated and analyzed. The results show that the large-scale solar array deployed by inflatable mast can change the characteristics of large-scale structure from flexible large rotation deployment to high stiffness structure by thermal curing method, and the structure has the effect of vibration suppression. These structure responses are affected by excitation amplitude and load, and the dynamic performance of the structure is significantly changed.

Key words: deployable mast, inflatable, solar arrays, large-scale, flexible

CLC Number:

WEI Jianzheng, ZHANG Pengfei, MA Ruiqiang, CHEN Xueyan, TAN Huifeng. Design and Dynamics of Large-scale Solar Arrays with Inflatable Mast[J]. Journal of Mechanical Engineering, 2020, 56(5): 93-99.

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