209 内則に円孔を有する薄肉パラボラアンテナの形状が振動特性に与える影響(CAD/CAE)

概要

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Inflatable structures are being examined these days as a new structural design paradigm to realize larger and lighter space structures. In designing such large and flexible space structures, the modal parameters including natural frequency and mode vector are important. However inflatable structures are liable to make the shape imperfection since their shapes are changed by the pressurization and condition of inflation gas. In this study, in order to evaluate how the shape imperfections affect the modal parameters, the inflatable parabolic antenna structures, those have various shape imperfections, were analyzed. From the results of the analysis, it was found that some shape imperfections affect the natural frequencies and mode vectors significantly. This paper refers to the relationship between the shape imperfection and the modal parameter of thin inflatable parabolic antenna and design methods of such inflatable structure based on the analysis results.
社団法人日本機械学会の論文
2006-07-03