Effect of shape imperfection on vibration characteristics of thin parabolic antenna

Akihisa Watanabe*, Hiroshi Yamakawa, Hiroaki Tsunoda, Kazuki Watanabe

*この研究の対応する著者

研究成果: Article査読

抄録

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 frequencies and mode vectors are important. However inflatable structures are liable to bring about the shape imperfection since their shapes may be 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 shows 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.

本文言語English
ページ(範囲)2697-2702
ページ数6
ジャーナルNihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C
73
10
出版ステータスPublished - 2007 10月
外部発表はい

ASJC Scopus subject areas

  • 機械工学

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